Scrcpy: Forward audio

[benwa]

Directing audio to the client would be pretty neat.

Currently you can accomplish the same thing by plugging a 3.5mm cable into the mic or line-in on the computer. Some manufacturers are dropping headphone ports though.

[MrLint]

Adding this would really making streaming games would so much better. So far all the other existing solutions kinda suck.

[AdoPi]

Is it even possible without a custom rom?

[rom1v]

As suggested by Juan, one possibility to investigate is using AOA.

I already implemented something using HID over AOA in the past (I even have a publicly available sample), it should be quite similar.

[rom1v]

I just implemented a PoC (separated of _scrcpy_) to enable audio forwarding from the device to the computer: aoa-audio.

On _Debian_ stable, it "works": the device sound is played on the computer.

This is quite manual though, and several issues must be solved before something similar could be implemented in _scrcpy_.

Any help is welcome :wink:

[AdoPi]

May it be possible to use AudioRecord api server side?
Problem is that AudioRecord requires an Activity context, I don't know if we can spawn one by using app_process.

[rom1v]

AudioRecord may only record input sources (like microphone), not the device audio output.

[AdoPi]

I may be wrong but here is an example of what I thought:

https://github.com/tzutalin/ReadPCMData/blob/master/src/com/da/readpcmtest/MainActivity.java

Sorry I should have added this on my previous comment.

[rom1v]

Oh, you're right, I missed the REMOTE_SUBMIX audio source.

[rom1v]

Arf, just calling new AudioRecord(…) segfaults, probably because there is no Context (fault addr 0x0).

_Note that AudioRecord itself does not require a Context explicitly._

[AdoPi]

Yes... :(
That's why I was wondering if we could create one even if we are using app process.

Audio support is really tricky :/

[rom1v]

Even from an app, the source REMOTE_SUBMIX does not work:

AudioRecord: Could not get audio input for record source 8, sample rate 44100, format 0x1, channel mask 0xc, session 73, flags 0

(while it works with MIC for example).

[rom1v]

Hi,

I would like to share with you my work-in-progress branch: audio. _This branch can be rebased/rewritten at any time._

I implemented it, and it works fine for me! :tada:

I would like early feedbacks so that any major issue can be fixed.

Requirements

• Linux (for now, I have problems to make it work on Windows and MacOS)
• a device supporting AOA2
• the device must be connected via USB (not adb connect)

How to

Install libusb:

sudo apt install libusb-1.0-0 libusb-1.0-0-dev

Checkout the audio branch:

git fetch
git checkout origin/audio

Use a debug build to report problems:

meson d
ninja -C d

Run with audio forwarding enabled:

./run d --forward-audio

The audio should be forwarded.

When closed, the audio forwarding may not be totally disabled. It may require to restart the current audio track (in VLC for example). If it is not sufficient, unplug the device. At worst (but it should not be necessary), disable/enable USB debugging.

How it works

_Scrcpy_ connects to the device over USB to send AOA requests so that the computer becomes an "USB audio accessory" for the device.

This creates a new audio input source on the computer (which can be seen in PulseAudio for example).

_Scrcpy_ records this input source and immediately plays it to the default output source.

Thank you for your feedbacks.

[rom1v]

In theory, it should now also work on Windows (in MSYS2/mingw64), with the libusb package:

pacman -S mingw-w64-x86_64-libusb

However, when it try to communicate to open the device over USB on Windows, libusb_open() returns -3, which is (according to libusb_strerror()):

Access denied (insufficient permissions)

I have no idea how to get the permissions granted. Any ideas?

[eyal-lezmy]

On macOS you can install libusb with the following command: brew install libusb

On a MBP 15, macOS 10.13.3 it is not working.

I start the app while a podcast is playing on the device.
After the app starts I get some noise coming out from the computer's speakers, but nothing that I can recognise. At the same time the device's speakers stop emitting a sound.
After about 10 seconds, the scrcpy app stops itself and the podcast sound comes back on the device's speaker.

This behaviour is 100% reproducible on my side.

Here are the command line output:
2018-03-24 23:01:14.851 scrcpy[5291:36915] DEBUG: No serial provided, request it to the device 2018-03-24 23:01:14.865 scrcpy[5291:36915] DEBUG: Device serial is ENU7N15B03004574 2018-03-24 23:01:14.866 scrcpy[5291:36915] DEBUG: USB device with serial ENU7N15B03004574 found: 18d1:4ee7 2018-03-24 23:01:14.867 scrcpy[5291:36915] DEBUG: Device AOA version: 2 2018-03-24 23:01:14.867 scrcpy[5291:36915] INFO: Audio forwarding enabled 2018-03-24 23:01:14.883 scrcpy[5291:36915] INFO: Waiting 2s for USB reconfiguration... 2018-03-24 23:01:17.144 scrcpy[5291:36915] INFO: Selecting input audio source: Built-in Microphone d/server/scrcpy-server.jar: 1 file pushed. 2.9 MB/s (23985 bytes in 0.008s) 2018-03-24 23:01:17.918 scrcpy[5291:36915] DEBUG: Starting decoder thread 2018-03-24 23:01:17.918 scrcpy[5291:36915] DEBUG: Starting controller thread 2018-03-24 23:01:18.845 scrcpy[5291:36915] INFO: OpenGL shaders: ENABLED 2018-03-24 23:01:18.845 scrcpy[5291:36915] INFO: Created renderer: opengl 2018-03-24 23:01:18.849 scrcpy[5291:36915] INFO: Initial texture: 1440x2560 2018-03-24 23:01:20.662 scrcpy[5291:36915] DEBUG: Unknown touch device id -841524992, cannot reset 2018-03-24 23:01:25.184 scrcpy[5291:37036] DEBUG: End of frames 2018-03-24 23:01:25.188 scrcpy[5291:36915] DEBUG: Video decoder stopped 2018-03-24 23:01:25.188 scrcpy[5291:36915] DEBUG: quit... 2018-03-24 23:01:25.200 scrcpy[5291:36915] DEBUG: Server terminated 2018-03-24 23:01:25.408 scrcpy[5291:36915] DEBUG: USB device with serial ENU7N15B03004574 found: 18d1:4ee7 2018-03-24 23:01:25.409 scrcpy[5291:36915] DEBUG: Device AOA version: 2 2018-03-24 23:01:25.409 scrcpy[5291:36915] INFO: Audio forwarding disabled

[rom1v]

Thank you for the test :+1:

Selecting input audio source: Built-in Microphone

It did not select the right input source, either because none were created, either because for now it just selects the last one, assuming it's the most recent (so it should probably be the input source from the device).

I'll check that. Thank you.

[eyal-lezmy]

For your information I've done 2 tests one with a headset connected to the computer and another one without any headset plugged in.

Good luck

[rom1v]

@eyal-lezmy I investigated on Mac, and it appears that enabling "audio accessory" on the device does not create a new audio input source on the computer.

So unfortunately, I think that the feature will be Linux-only…

I updated the branch to reject the input source if its name does not contain the device model (so that it does not open the built-in microphone for example).

[MrLint]

Ok so heres a wholly stupid question. Would it work via the Linux environment in windows 10?

[rom1v]

Would it work via the Linux environment in windows 10?

You tell me :wink:

[yxtj]

What is the plan of merging this excellent feature into the main branch?

[rom1v]

Did you test it? Does it work correctly for you?

There are several problems:

• it's a bit hacky/fragile;
• it only works on Linux (but not necessarily a problem);
• if the computer consumes audio at a slightly different rate from the one it is produced by the device (which is not unlikely), the drift will increase and sound becomes very bad, and there is no mechanism to compensate.

So for now, I don't merge it.

Maybe I could, mentionning that it is very experimental...

[yimuchen]

Hi, thanks for the package! I've been enjoying it a lot
I wanted to test the audio forwarding feature out on my machines, but I cannot work out why the program is failing to start with the forward audio enabled.

On my Archlinux machine, I have both libusb and libusb-compat installed besides the dependencies already listed in the AUR package for scrcpy. The testing scrcpy pacakge was compiled with the pre-built server.jar. When attempting to start scrcpy audio forwarding with my Nokia6.1 (Android 8.1, July 1st 2018 patch), the program exits with the following error message:

DEBUG: Device AOA version: 2
INFO: Audio accessory enabled
INFO: Waiting 2s for USB reconfiguration...
DEBUG: Audio input #0: Built-in Audio Analog Stereo
DEBUG: setpriority() failed
DEBUG: Device model is: Nokia 6.1
ERROR: Cannot find the Android accessory audio input source
DEBUG: Disabling audio accessory...
DEBUG: USB device with serial PL2GAMR832306185 found: 18d1:2d05
DEBUG: Device AOA version: 2

Without the --forward-audio flag, the program runs fine.

[rom1v]

@yimuchen Could you test manually with pactl and ffplay:

$ pactl list short sources
0   alsa_output.pci-0000_00_05.0.analog-stereo.monitor module-alsa-card.c  s16le 2ch 44100Hz   SUSPENDED
1   alsa_input.pci-0000_00_05.0.analog-stereo   module-alsa-card.c s16le 2ch 44100Hz   SUSPENDED

$ ffplay -vn -f pulse -i alsa_input.usb-LGE_Nexus_5_05f5e60a0ae518e5-01.analog-stereo

[yimuchen]

@rom1v I'm a bit new to writing this sort of code, Can you help me with how I should get the string for my device, the alsa_input.usb-LGE_Nexus_5_05f5e60a0ae518e5-01.analog-stereo for my phone?

The output of pactl is:

0       alsa_output.pci-0000_00_1b.0.analog-stereo.monitor      module-alsa-card.c      s16le 2ch 48000Hz       SUSPENDED
1       alsa_input.pci-0000_00_1b.0.analog-stereo       module-alsa-card.c      s16le 2ch 44100Hz       SUSPENDED

On a side note, as a test, I edited the get_matching_audio_device in app/src/audio.c, so that the program uses the found Audio input #0: Built-in Audio Analog Stereo as the audio device, it seems to be able to pass the microphone input of my phone to my PC (I can hear myself talking to the phone from hy PC's headphone), but not the internal audio.

[rom1v]

Can you help me with how I should get the string for my device, the alsa_input.usb-LGE_Nexus_5_05f5e60a0ae518e5-01.analog-stereo for my phone?

Sorry, I copied incomplete instructions I kept in some textfile.

Instead, follow the steps I wrote in the README of aoa-audio.

[yimuchen]

@rom1v Thanks for instructions! I think the issue that I have is that the udev rules for my phone isn't available yet. The vendor/product ID under lsusb is constantly in flux, and changes everytime I run the ./audio package. I guess I'll try again when I find and updated udev rule : /

[ml1969]

@rom1v
First, I want to thank you for this awesome application.
It is exactly what I was looking for to mirror the screen of my Huawei Mediapad M5 on the PC and in very high quality.
Neither google cast nor miracast can keep up with the image quality
Better even as an airplay from the Ipad Air 2 to the PC.
I use it with adb over wlan with this cmd command:
scrcpy.exe -s 192.168.10.74:5555 -b 32M -m 1735

So far, I transmit the sound either via cable, which is awkward because the M5 has only a USB-C and no headphone jack, or I use bluetooth but that is not so clever.

Since I work exclusively with Windows and unfortunately with linux little on the hat, I would be glad to test the addressed by you "experimental audio inclusive version". With the knowledge that it does not work 100% yet and that there can be problems.

Thanks again for this great application.
Regards
Michael

[rom1v]

Since I work exclusively with Windows and unfortunately with linux little on the hat, I would be glad to test the addressed by you "experimental audio inclusive version". With the knowledge that it does not work 100% yet and that there can be problems.

On Windows, it does not work at all. And anyway, when it works, it's only over USB.

[ml1969]

Hello rom1v,

thanks for reply, if I can help testing on windows I can use USB that will no problem.
What I would say is, that your great app works over WLAN better as the "big known players" and thats great..... RESPECT to your work !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

would it work in a VM???? Will adb work in a VM when USB is passed through??
I did not have any experience with adb on a linux system, I have some experience on Windows
I root Samsung S5 S6 S8, Nexus 6 and the tablet Nexus 7, also Huawei P10 but the mediapad its just new so I dont will do it 😂 all using adb and fastboot.

Michael

[rom1v]

What I would say is, that your great app works over WLAN better as the "big known players" and thats great..... RESPECT to your work !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Glad you like it :wink:

would it work in a VM???? Will adb work in a VM when USB is passed through??

I didn't try.

[ml1969]

@rom1v

For your notice, I set up a VM using Virtual Box and a Ubuntu 18 image and it works.
I can mirror the screen from my tablet with forwarded USB to the VM.
The quality is not so good as on my real Win PC but I think this comes frome the USB.

Now I cloned the VM, so that I can try the audio stuff. 👍

Michael

[ml1969]

Hello again,

First:
I have managed that the quality in the VM is quiet the same as on my real Windows PC. I have to enable USB-3.0 mode in the VM.

Second:
as you described I created a debug build.
If I run .\run d it works like the normal build with scrcpy,
but if I use the "-a" flag I got this error messages:

wot@wot-VirtualBox:~/scrcpy$ ./run d -s  NNF6R18525002604  -m 600 -a

DEBUG: Enabling audio accessory...
DEBUG: USB: cannot open device 1d6b:0003 (Access denied (insufficient permissions))
DEBUG: USB device with serial NNF6R18525002604 found: 12d1:107e
DEBUG: Device AOA version: 2
INFO: Audio accessory enabled
INFO: Waiting 2s for USB reconfiguration...
DEBUG: Audio input #0: Eingebautes Tongerät Analog Stereo
DEBUG: setpriority() failed
error: device 'NNF6R18525002604' not found
ERROR: "getprop model" returned with value 1
ERROR: Cannot read Android device model
ERROR: Cannot find the Android accessory audio input source
DEBUG: Disabling audio accessory...
DEBUG: USB: cannot open device 1d6b:0003 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 80ee:0021 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1d6b:0002 (Access denied (insufficient permissions))
ERROR: Cannot find USB device having serial NNF6R18525002604
WARN: Cannot disable audio forwarding
wot@wot-VirtualBox:~/scrcpy$ 

Where can I look into???

MIchael

[rom1v]

@ml1969 you probably need to add the udev rules for Android device (just install the android-tools-adb package on Debian-based distribution).

[likezjuisee]

After I executed the command "./audio 18d1 4ee1 1", can I get the PCM data from the usb handle?

[rom1v]

@likezjuisee no, it just adds a new input audio source on your computer, that you can play or record.

[likezjuisee]

If I want to record the audio data from the android, could you give me some advice? The audio data's format is PCM?

[nrfwmd]

After adding udev rules, I got this:

DEBUG: No serial provided, request it to the device
DEBUG: Device serial is ZY224P7LF8
DEBUG: Enabling audio accessory...
DEBUG: USB device with serial ZY224P7LF8 found: 18d1:2d01
DEBUG: Device AOA version: 2
INFO: Audio accessory enabled
INFO: Waiting 2s for USB reconfiguration...
DEBUG: Audio input #0: Built-in Audio Analog Stereo
DEBUG: setpriority() failed
DEBUG: Device model is: moto x4
ERROR: Cannot find the Android accessory audio input source
DEBUG: Disabling audio accessory...
DEBUG: USB device with serial ZY224P7LF8 found: 18d1:2d05
DEBUG: Device AOA version: 2

[rom1v]

If I want to record the audio data from the android, could you give me some advice? The audio data's format is PCM?

Once AOA audio is enabled, you have a new input source on your computer (e.g. in pulseaudio). You can then play or record it as any input source.
See

• https://github.com/rom1v/aoa-audio
• https://askubuntu.com/questions/834961/sox-and-rec-without-the-mic/835012#835012

You can probably record it with _audacity_ too.

[rom1v]

@nrfwmd Yes, it does not work with all devices or all computers. That's why I did not merge this branch.

[nrfwmd]

@rom1v will rooting my device help me with this?

[rom1v]

I don't think so.

[nrfwmd]

@rom1v I tried this on Xperia XA1 Ultra and it works(scrcpy with sound I mean). 👍

[yxtj]

What I really think important for this function is to have a compiled Windows version. Even it only works for few models.
After I advertised this awesome tool to the Chinese community, especially the community of mobile game streamers, all them love it. And all of them asked how can they forward audio. Apparently, most common users are using Windows and this is not a unique phenomenon in some countries. It would be great if we can give them a touchable hope. In addition, spreading your company name to the millions of viewers of these streamers surely is a good and free adverting.

[rom1v]

_(I have no idea how to make it work on Windows at all.)_

[IdrisDose]

So question, if I run this app within an ubuntu VM on a windows host machine would it work O.o (all I want to do is watch this app that only streams to 'mobile devices')

[rom1v]

@IdrisDose See https://github.com/Genymobile/scrcpy/issues/14#issuecomment-410515037.

[likezjuisee]

If I want to record the audio data from the android, could you give me some advice? The audio data's format is PCM?

Once AOA audio is enabled, you have a new input source on your computer (e.g. in pulseaudio). You can then play or record it as any input source.
See

• https://github.com/rom1v/aoa-audio
• https://askubuntu.com/questions/834961/sox-and-rec-without-the-mic/835012#835012

You can probably record it with _audacity_ too.

I will try, thanks.

[rom1v]

I rebased the audio on the current master. There were conflicts and things to rewrite, the previous audio branch was written above v1.1. The old one is still available in audio_old.

Nothing changes in the audio forwarding implementation, but it is now implemented above the last version of _scrcpy_.

[librewish]

I exclusively use Gnu/Linux (Manjaro) as I hate windows.
Scrcpy is very good alternative to connect app on windows although it doesn't support audio forwarding like connect app so I use Bluetooth to forward my android audio
Would it be possible to use it via wireless display(cast)?

[amosbird]

Can you help me with how I should get the string for my device, the alsa_input.usb-LGE_Nexus_5_05f5e60a0ae518e5-01.analog-stereo for my phone?

Sorry, I copied incomplete instructions I kept in some textfile.

Instead, follow the steps I wrote in the README of aoa-audio.

Hmm, I've tested with ffplay and it works as expected. However I still get this error

 ❯ ./run d --forward-audio
d/server/scrcpy-server.jar: 1 file pushed. 3.4 MB/s (69550 bytes in 0.019s)
DEBUG: No serial provided, request it to the device
DEBUG: Device serial is 851QFDSF2259C
DEBUG: Enabling audio accessory...
DEBUG: USB: cannot open device 8087:8001 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1d6b:0002 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 17ef:1012 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1d6b:0003 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 04ca:703c (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 8087:0a2a (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 138a:0017 (Access denied (insufficient permissions))
DEBUG: USB device with serial 851QFDSF2259C found: 18d1:2d01
DEBUG: Device AOA version: 2
INFO: Audio accessory enabled
INFO: Waiting 2s for USB reconfiguration...
DEBUG: Audio input #0: Built-in Audio Analog Stereo
DEBUG: Audio input #1: SDM636-MTP _SN:95743F4E Analog Stereo
DEBUG: Device model is: MEIZU E3
ERROR: Cannot find the Android accessory audio input source
DEBUG: Disabling audio accessory...
DEBUG: USB device with serial 851QFDSF2259C found: 18d1:2d05
DEBUG: Device AOA version: 2

pacman -S android-udev is installed.

[rom1v]

Cannot find the Android accessory audio input source

The problem is that there is no link between the USB device and the input source created when we enable AOA. So it attempts to guess, based on the names.

Currently, it checks whether the audio device name contains the device model:
https://github.com/Genymobile/scrcpy/blob/fae8f353cecdfc364b128e12ab67922d373618b6/app/src/audio.c#L54-L62

It seems it is not the case for your device.

Could you add a debug log to print the name variable (the audio device name)?

[amosbird]

DEBUG: Audio input #0: Built-in Audio Analog Stereo
DEBUG: Audio input #1: SDM636-MTP _SN:95743F4E Analog Stereo
DEBUG: Device model is: MEIZU E3
DEBUG: Device name is: SDM636-MTP _SN:95743F4E Analog Stereo
DEBUG: Device name is: Built-in Audio Analog Stereo
ERROR: Cannot find the Android accessory audio input source
DEBUG: Disabling audio accessory...
DEBUG: USB device with serial 851QFDSF2259C found: 18d1:2d05
DEBUG: Device AOA version: 2

[amosbird]

btw, phone calls don't get forwarded when I was testing ffplay. Only music does.

[rom1v]

OK, so the audio device name is SDM636-MTP _SN:95743F4E and the device model is MEIZU E3.

I don't know how we can match the audio device.

[amosbird]

lemme try hard coding then

[amosbird]

hmm, what the heck are these https://la.wentropy.com/GXbK

[rom1v]

hmm, what the heck are these https://la.wentropy.com/GXbK

https://github.com/Genymobile/scrcpy/issues/17#issuecomment-371916622

[amosbird]

That aur package doesn't help. Well it seems to be harmless errors though.

[vasu97]

so, i did everything as per instruction bit i dont know why audio is still not coming.
Here's some of the details about it:-

vasu97@BlackPearl:~/scrcpy$ ./run d --forward-audio
[100%] /data/local/tmp/scrcpy-server.jar
DEBUG: No serial provided, request it to the device
DEBUG: Device serial is 307c9a4c
DEBUG: Enabling audio accessory...
DEBUG: USB: cannot open device 05c8:036e (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 0bda:b001 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 8087:8000 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1d6b:0002 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1d6b:0003 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1d57:ad04 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1c4f:0002 (Access denied (insufficient permissions))
DEBUG: USB device with serial 307c9a4c found: 18d1:2d01
DEBUG: Device AOA version: 2
INFO: Audio accessory enabled
INFO: Waiting 2s for USB reconfiguration...
DEBUG: setpriority() failed
DEBUG: Audio input #0: Built-in Audio Analog Stereo
DEBUG: Audio input #1: OnePlus Analog Stereo
DEBUG: Device model is: ONEPLUS A5000
ERROR: Cannot find the Android accessory audio input source
DEBUG: Disabling audio accessory...
DEBUG: USB device with serial 307c9a4c found: 18d1:2d05
DEBUG: Device AOA version: 2

well this is it and i dont know whats wrong.

[rom1v]

@vasu97 See https://github.com/Genymobile/scrcpy/issues/14#issuecomment-453746741.

OnePlus Analog Stereo does not contain ONEPLUS A5000.

[n0v4c0r3]

┌─[✗]─[novacore@parrot]─[~/Desktop/scrcpy]
└──╼ $sudo ./run d --forward-audio
d/server/scrcpy-server.jar: 1 file pushed. 2.4 MB/s (26987 bytes in 0.011s)
DEBUG: No serial provided, request it to the device
DEBUG: Device serial is fa41fce77d63
DEBUG: Enabling audio accessory...
DEBUG: USB: device 0cf3:e500 has no serial number available
DEBUG: USB: device 0438:7900 has no serial number available
DEBUG: USB device with serial fa41fce77d63 found: 18d1:2d05
DEBUG: Device AOA version: 2
INFO: Audio accessory enabled
INFO: Waiting 2s for USB reconfiguration...
DEBUG: Audio input #0: Built-in Audio Analog Stereo
DEBUG: Audio input #1: Android Analog Stereo
DEBUG: Device model is: havoc_land
ERROR: Cannot find the Android accessory audio input source
DEBUG: Disabling audio accessory...
DEBUG: USB: device 0cf3:e500 has no serial number available
DEBUG: USB: device 0438:7900 has no serial number available
DEBUG: USB device with serial fa41fce77d63 found: 18d1:2d05
DEBUG: Device AOA version: 2
DEBUG: Event controller stopped

DEVICE: REDMI 3S
device code: land
android 9

any suggestions for me?

[rom1v]

@n0v4c0r3 Same issue, see https://github.com/Genymobile/scrcpy/issues/14#issuecomment-453746741.

Instead of guessing the audio device from the name, we should list all audio devices first, enable AOA, then list all audio devices after, then take the diff.

[parkerlreed]

Mine doesn't even seem to get that far (Oculus Go)

[parker@e55 scrcpy]$ ./run d -a d/server/scrcpy-server.jar: 1 file pushed. 2.1 MB/s (19186 bytes in 0.009s) INFO: Audio accessory enabled INFO: Waiting 2s for USB reconfiguration... ERROR: No audio input source found

Using the 1.5 server jar.

EDIT: Ok so I screwed up the last one
[parker@e55 scrcpy]$ ./run d --forward-audio d/server/scrcpy-server.jar: 1 file pushed. 1.7 MB/s (19186 bytes in 0.011s) DEBUG: No serial provided, request it to the device DEBUG: Device serial is 1KWPH802328184 DEBUG: Enabling audio accessory... DEBUG: USB: cannot open device 046d:c24c (Access denied (insufficient permissions)) DEBUG: USB: cannot open device 2516:0004 (Access denied (insufficient permissions)) DEBUG: USB: cannot open device 8087:0024 (Access denied (insufficient permissions)) DEBUG: USB: cannot open device 1d6b:0002 (Access denied (insufficient permissions)) DEBUG: USB: cannot open device 058f:6362 (Access denied (insufficient permissions)) DEBUG: USB device with serial 1KWPH802328184 found: 2833:0083 DEBUG: Device AOA version: 2 INFO: Audio accessory enabled INFO: Waiting 2s for USB reconfiguration... ERROR: No audio input source found DEBUG: Disabling audio accessory... DEBUG: USB device with serial 1KWPH802328184 found: 2833:0083 DEBUG: Device AOA version: 2

[parkerlreed]

Tried the standalone and the device never shows up

[parker@e55 aoa-audio]$ ./audio 2833 0083 1 Device 2833:0083 found. Opening... Setting audio mode: 1 SUCCESS [parker@e55 aoa-audio]$ pactl list short sources 0 alsa_output.pci-0000_01_00.1.hdmi-stereo-extra3.monitor module-alsa-card.c s16le 2ch 44100Hz SUSPENDED

Right after enabling aoa the MTP disconnects and reconnects

[2ulkifli]

Please help me how to install aoa-audio step by step on windows 10 tq

[duplex143]

On macOS you can install libusb with the following command: brew install libusb

On a MBP 15, macOS 10.13.3 it is not working.

I start the app while a podcast is playing on the device.
After the app starts I get some noise coming out from the computer's speakers, but nothing that I can recognise. At the same time the device's speakers stop emitting a sound.
After about 10 seconds, the scrcpy app stops itself and the podcast sound comes back on the device's speaker.

@eyal-lezmy What are the commands for forwarding audio to mac after installing libusb?

[codefolder]

On latest updated Debian Stretch with Samsung Galaxy S7 Edge no success like this:

./run d --forward-audio
d/server/scrcpy-server.jar: 1 file pushed. 3.5 MB/s (27439 bytes in 0.008s)
DEBUG: No serial provided, request it to the device
DEBUG: Device serial is ce0117115189590705
DEBUG: Enabling audio accessory...
DEBUG: USB device with serial ce0117115189590705 found: 04e8:6860
DEBUG: Device AOA version: 2
INFO: Audio accessory enabled
INFO: Waiting 2s for USB reconfiguration...
DEBUG: setpriority() failed
DEBUG: Audio input #0: Built-in Audio Analog Stereo
DEBUG: Audio input #1: SAMSUNG_Android Analog Stereo
error: insufficient permissions for device: verify udev rules.
See [http://developer.android.com/tools/device.html] for more information.
ERROR: "getprop model" returned with value 1
ERROR: Cannot read Android device model
ERROR: Cannot find the Android accessory audio input source
DEBUG: Disabling audio accessory...
DEBUG: USB: cannot open device 18d1:2d05 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 062a:4101 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 8087:0020 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1d6b:0002 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 18a5:0243 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1d6b:0003 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1d6b:0002 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 8087:0020 (Access denied (insufficient permissions))
DEBUG: USB: cannot open device 1d6b:0002 (Access denied (insufficient permissions))
ERROR: Cannot find USB device having serial ce0117115189590705
WARN: Cannot disable audio forwarding

[cheemo]

On Pop!_OS 19.04
Device: Xiaomi Mi 9 Android Ver. 9
No success.

./run d --forward-audio
d/server/scrcpy-server.jar: 1 file pushed. 0.6 MB/s (19734 bytes in 0.032s)
INFO: Audio accessory enabled
INFO: Waiting 2s for USB reconfiguration...
error: device '66d13e79' not found
ERROR: "getprop model" returned with value 1
ERROR: Cannot read Android device model
ERROR: Cannot find the Android accessory audio input source
ERROR: Cannot find USB device having serial 66d13e79
WARN: Cannot disable audio forwarding

[Ajedi32]

Is it possible Android Q could make this easier/more reliable? https://developer.android.com/preview/features/playback-capture

[rom1v]

@Ajedi32 Ah great! To be investigated…

[EloiStree]

Not the best solution. But it works. If it can help .
( Nice about 0-5 m, max 10-15 meters)

[parkerlreed]

I assume the custom Bluetooth link is lower latency than normal?

Also can you explain the setup. I see the links in the other post but am not quite sure of what's going on.

[257]

i would like to fool shazam with sending audio from linux (mpv+pulseaudio) to android and discovering the song.

[parkerlreed]

@257 That would be completely the reverse. The current work is trying to get from the device to computer, not the other way around. You could at that point just play the music on the speakers and let the phone pick it up.

[257]

@parkerlreed right.
although speaker is not an option here. i'm listening to radio at work with my headphones.
it would be cool though if audio could be fed into android/shazam. any idea?

[parkerlreed]

@257 Is this an Internet radio station streaming on the computer? Most will also encode the stream with metadata.

Or if it's streaming, just load it on the phone directly.

[257]

@parkerlreed no, good old bbc music 6 i fetch with get_iplayer

[rom1v]

I developed a separate tool to forward audio over USB (Linux-only): USBAudio (details).

[trigsoft]

@rom1v Would it be possible to forward audio from voice call to the PC?

[parkerlreed]

I had a bit of a duh moment... I can use the Bluetooth on the computer to get the audio. USB would be ideal but Bluetooth actually works really well

[punkoffice]

What's the status of this for Windows? It would be great to capture audio from line-in / mic when recording video via scrcpy. At the moment if you want to stream Oculus Quest to a PC and record it then you'd have to run scrcpy and sound recorder at the same time

[miaulightouch]

Even from an app, the source REMOTE_SUBMIX does not work:

AudioRecord: Could not get audio input for record source 8, sample rate 44100, format 0x1, channel mask 0xc, session 73, flags 0

(while it works with MIC for example).

REMOTE_SUBMIX seems working as system apps only, maybe making a magisk module?

take a look: https://gitlab.com/vijai/screencam-magisk-module

[Renari]

Tried running usbaudio in the linux subsystem for Windows. Couldn't get it running.

• meson is not in ubuntu trusty's package manager
• meson can be installed with python 3.5 (which must be installed from an external ppa) python3.5 -m pip install --user meson
• meson when run with meson x --buildtype=release will complain that ninja is not found
• you can download ninja and add it to /user/bin but meson will still complain that it cannot find ninja, running ninja will complain that it doesn't have root privileges
• running sudo meson x --buildtype=release appears to no longer complain that it ninja is missing but sits stalled for an eternity and never actually completes

[Renari]

Was able to get it running by downloading an older version of nijna (1.5.1 to be exact) the end result is:

[ERROR] Could not initialize AOA

[alexkibler]

Android Q added an API to capture audio playback. I'm not familiar with the scrcpy codebase yet, but would it be possible to create a helper app that could record audio and stream that to the scrcpy desktop app?

[rom1v]

Android Q added an API to capture audio playback.

Yes :+1: (https://github.com/Genymobile/scrcpy/issues/14#issuecomment-494058394)

I'm not familiar with the scrcpy codebase yet

If you have an Android Q device and want to investigate, creating a "standalone Java app" (cf here) outside _scrcpy_ which captures audio packets (and just log them) would help a lot :+1:

I currently don't have time to investigate ~(and I don't have any Android Q device for the moment)~, but once the investigation part is done (with a PoC which receives the packets), I could probably work on the scrcpy-specific part.

[alexkibler]

That's a great idea! I'll give it a shot when I get a chance (someone will likely beat me to it) although I'm struggling to understand the playback capture docs. It almost looks like you can only capture audio from a specific app (as opposed to recording the entire system.) I'm going to do more research tonight

[BigDogBoy]

Hi,

I would like to share with you my work-in-progress branch: audio. _This branch can be rebased/rewritten at any time._

I implemented it, and it works fine for me!

I would like early feedbacks so that any major issue can be fixed.

Requirements

• Linux (for now, I have problems to make it work on Windows and MacOS)
• a device supporting AOA2
• the device must be connected via USB (not adb connect)

How to

Install libusb:

sudo apt install libusb-1.0-0 libusb-1.0-0-dev

Checkout the audio branch:

git fetch
git checkout origin/audio

Use a debug build to report problems:

meson d
ninja -C d

Run with audio forwarding enabled:

./run d --forward-audio

The audio should be forwarded.

When closed, the audio forwarding may not be totally disabled. It may require to restart the current audio track (in VLC for example). If it is not sufficient, unplug the device. At worst (but it should not be necessary), disable/enable USB debugging.

How it works

_Scrcpy_ connects to the device over USB to send AOA requests so that the computer becomes an "USB audio accessory" for the device.

This creates a new audio input source on the computer (which can be seen in PulseAudio for example).

_Scrcpy_ records this input source and immediately plays it to the default output source.

Thank you for your feedbacks.

For me it's not working, I'm using a Lenovo T430 I purchased on FB marketplace. The guy I bought It from refurbished it a bit, here are the spec's output from the terminal:hardwareinfo.html.txt

and here's the program output from the terminal:

big-dog-boy@ben:~$ sudo apt install libusb-1.0-0 libusb-1.0-0-dev
[sudo] password for big-dog-boy: 
Sorry, try again.
[sudo] password for big-dog-boy: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
libusb-1.0-0 is already the newest version (2:1.0.22-2).
libusb-1.0-0 set to manually installed.
The following packages were automatically installed and are no longer required:
  fonts-liberation2 fonts-opensymbol gstreamer1.0-gtk3 libabw-0.1-1
  libboost-date-time1.67.0 libboost-filesystem1.67.0 libboost-iostreams1.67.0
  libboost-locale1.67.0 libcdr-0.1-1 libclucene-contribs1v5 libclucene-core1v5
  libcmis-0.5-5v5 libcolamd2 libe-book-0.1-1 libeot0 libepubgen-0.1-1
  libetonyek-0.1-1 libexttextcat-2.0-0 libexttextcat-data libfreehand-0.1-1
  libglew2.1 libgpgmepp6 liblangtag-common liblangtag1 libmessaging-menu0
  libmhash2 libmspub-0.1-1 libmwaw-0.3-3 libmythes-1.2-0 libneon27-gnutls
  libodfgen-0.1-1 liborcus-0.14-0 libpagemaker-0.0-0 libraptor2-0 librasqal3
  librdf0 librevenge-0.0-0 libsdl2-image-2.0-0 libsuitesparseconfig5
  libvisio-0.1-1 libwpd-0.10-10 libwpg-0.3-3 libwps-0.4-4 libxmlsec1
  libxmlsec1-nss libyajl2 linux-headers-5.0.0-23
  linux-headers-5.0.0-23-generic linux-image-5.0.0-23-generic
  linux-modules-5.0.0-23-generic linux-modules-extra-5.0.0-23-generic lp-solve
  uno-libs3 ure
Use 'sudo apt autoremove' to remove them.
The following NEW packages will be installed:
  libusb-1.0-0-dev libusb-1.0-doc
0 upgraded, 2 newly installed, 0 to remove and 28 not upgraded.
Need to get 233 kB of archives.
After this operation, 1,793 kB of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com/ubuntu disco/main amd64 libusb-1.0-0-dev amd64 2:1.0.22-2 [61.7 kB]
Get:2 http://us.archive.ubuntu.com/ubuntu disco/main amd64 libusb-1.0-doc all 2:1.0.22-2 [171 kB]
Fetched 233 kB in 1s (309 kB/s)         
Selecting previously unselected package libusb-1.0-0-dev:amd64.
(Reading database ... 218828 files and directories currently installed.)
Preparing to unpack .../libusb-1.0-0-dev_2%3a1.0.22-2_amd64.deb ...
Unpacking libusb-1.0-0-dev:amd64 (2:1.0.22-2) ...
Selecting previously unselected package libusb-1.0-doc.
Preparing to unpack .../libusb-1.0-doc_2%3a1.0.22-2_all.deb ...
Unpacking libusb-1.0-doc (2:1.0.22-2) ...
Setting up libusb-1.0-doc (2:1.0.22-2) ...
Setting up libusb-1.0-0-dev:amd64 (2:1.0.22-2) ...
big-dog-boy@ben:~$ git fetch

Command 'git' not found, but can be installed with:

sudo apt install git

big-dog-boy@ben:~$ sudo apt install git
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  fonts-liberation2 fonts-opensymbol gstreamer1.0-gtk3 libabw-0.1-1
  libboost-date-time1.67.0 libboost-filesystem1.67.0 libboost-iostreams1.67.0
  libboost-locale1.67.0 libcdr-0.1-1 libclucene-contribs1v5 libclucene-core1v5
  libcmis-0.5-5v5 libcolamd2 libe-book-0.1-1 libeot0 libepubgen-0.1-1
  libetonyek-0.1-1 libexttextcat-2.0-0 libexttextcat-data libfreehand-0.1-1
  libglew2.1 libgpgmepp6 liblangtag-common liblangtag1 libmessaging-menu0
  libmhash2 libmspub-0.1-1 libmwaw-0.3-3 libmythes-1.2-0 libneon27-gnutls
  libodfgen-0.1-1 liborcus-0.14-0 libpagemaker-0.0-0 libraptor2-0 librasqal3
  librdf0 librevenge-0.0-0 libsdl2-image-2.0-0 libsuitesparseconfig5
  libvisio-0.1-1 libwpd-0.10-10 libwpg-0.3-3 libwps-0.4-4 libxmlsec1
  libxmlsec1-nss libyajl2 linux-headers-5.0.0-23
  linux-headers-5.0.0-23-generic linux-image-5.0.0-23-generic
  linux-modules-5.0.0-23-generic linux-modules-extra-5.0.0-23-generic lp-solve
  uno-libs3 ure
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  git-man liberror-perl
Suggested packages:
  git-daemon-run | git-daemon-sysvinit git-doc git-el git-email git-gui gitk
  gitweb git-cvs git-mediawiki git-svn
The following NEW packages will be installed:
  git git-man liberror-perl
0 upgraded, 3 newly installed, 0 to remove and 28 not upgraded.
Need to get 4,969 kB of archives.
After this operation, 33.9 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://us.archive.ubuntu.com/ubuntu disco/main amd64 liberror-perl all 0.17027-2 [26.6 kB]
Get:2 http://us.archive.ubuntu.com/ubuntu disco/main amd64 git-man all 1:2.20.1-2ubuntu1 [835 kB]
Get:3 http://us.archive.ubuntu.com/ubuntu disco/main amd64 git amd64 1:2.20.1-2ubuntu1 [4,107 kB]
Fetched 4,969 kB in 9s (584 kB/s)                                              
Selecting previously unselected package liberror-perl.
(Reading database ... 218911 files and directories currently installed.)
Preparing to unpack .../liberror-perl_0.17027-2_all.deb ...
Unpacking liberror-perl (0.17027-2) ...
Selecting previously unselected package git-man.
Preparing to unpack .../git-man_1%3a2.20.1-2ubuntu1_all.deb ...
Unpacking git-man (1:2.20.1-2ubuntu1) ...
Selecting previously unselected package git.
Preparing to unpack .../git_1%3a2.20.1-2ubuntu1_amd64.deb ...
Unpacking git (1:2.20.1-2ubuntu1) ...
Setting up liberror-perl (0.17027-2) ...
Setting up git-man (1:2.20.1-2ubuntu1) ...
Setting up git (1:2.20.1-2ubuntu1) ...
Processing triggers for man-db (2.8.5-2) ...
big-dog-boy@ben:~$ git fetch
fatal: not a git repository (or any of the parent directories): .git
big-dog-boy@ben:~$ git checkout origin/audio
fatal: not a git repository (or any of the parent directories): .git

[BigDogBoy]

Sorry practically all the program output is striked through, I don't know what happened.

[parkerlreed]

It's ticks ` and not tildes ~

```
code block
```

[rom1v]

@BigDogBoy The git commands must be run from the directory where you cloned _scrcpy_:

git clone https://github.com/Genymobile/scrcpy
cd scrcpy

Anyway, this branch is old. If you want to try this "hack", consider testing USBaudio instead.

[PrincessAkira]

Any news for Windows?

[lividhen]

yeah. windows? i think it would be able to work on WSL but it doesnt use adb (that i know of), or have any other server on the windows side of things to be able to access the device. unless we could give wsl direct usb access, we would need something on the windows side to relay.

[Renari]

yeah. windows? i think it would be able to work on WSL but it doesnt use adb (that i know of), or have any other server on the windows side of things to be able to access the device. unless we could give wsl direct usb access, we would need something on the windows side to relay.

I tried on WSL I was able to compile the project but it wouldn't run. https://github.com/Genymobile/scrcpy/issues/14#issuecomment-522268600

[lividhen]

I tried on WSL I was able to compile the project but it wouldn't run. #14 (comment)

well it probably doesnt help that it cant access the device 😅
really, does anyone know how to do that, not just as a storage device? is that even possible? 🤔

[ichirou2910]

I cant seem to even run ./run d alone (run scrcpy worked tho)
What i did: listed all devices, enable AOA to my phone then run .run d -a
Here is the result. DO u have any idea?

ichirou2910@IK-Inspiron-7559~/scrcpy> sudo ./run d -a
d/server/scrcpy-server.jar: 1 file pushed. 0.5 MB/s (22546 bytes in 0.040s)
DEBUG: No serial provided, request it to the device
DEBUG: Device serial is 5200f616b4c2257f
DEBUG: Enabling audio accessory...
DEBUG: USB: device 8087:0a2a has no serial number available
DEBUG: USB: device 1bcf:28b0 has no serial number available
DEBUG: USB device with serial 5200f616b4c2257f found: 18d1:2d05
DEBUG: Device AOA version: 2
INFO: Audio accessory enabled
INFO: Waiting 2s for USB reconfiguration...
[server] ERROR: Exception on thread Thread[main,5,main]
java.lang.IllegalArgumentException: Expecting 6 parameters
    at com.genymobile.scrcpy.Server.createOptions(Server.java:71)
    at com.genymobile.scrcpy.Server.main(Server.java:132)
    at com.android.internal.os.RuntimeInit.nativeFinishInit(Native Method)
    at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:341)
DEBUG: Audio input #0: Built-in Audio Analog Stereo
DEBUG: Audio input #1: SAMSUNG_Android Analog Stereo
DEBUG: Device model is: SM-J730G
ERROR: Cannot find the Android accessory audio input source
DEBUG: Disabling audio accessory...
DEBUG: USB: device 8087:0a2a has no serial number available
DEBUG: USB: device 1bcf:28b0 has no serial number available
DEBUG: USB device with serial 5200f616b4c2257f found: 18d1:2d05
DEBUG: Device AOA version: 2

[lividhen]

https://www.incentivespro.com/downloads.html#usb-redirector-linux
GASP! Does anyone know how to get this to work on wsl? M' getting,
*** INSTALLATION FAILED! ??? Kernel sources or kernel headers directory not found. Please install the corresponding package first.

[achmadyusuf28]

In theory, it should now also work on Windows (in MSYS2/mingw64), with the libusb package:

pacman -S mingw-w64-x86_64-libusb

However, when it try to communicate to open the device over USB on Windows, libusb_open() returns -3, which is (according to libusb_strerror()):

Access denied (insufficient permissions)

I have no idea how to get the permissions granted. Any ideas?

Hi, I managed to enable audio accessory mode on Android by changing my phone's usb driver to libusbK using Zadig and your aoa-audio, new audio device appear, but i don't know what the next step is, because first, there is a problem with the audio device driver (showing warning sign that the device cannot start code:10) and second, i'm unable to make pulseaudio on windows to work and i don't know what program that have similar function as pulseaudio on windows.

[BigDogBoy]

All this talk about 'on Windows'; if you can't get it to work on 1 OS, try another; we already know two things, that Android, is based on the Linux kernel, and, that there is already a working SCRCPY package for Ubuntu, and possibly many other Linux distribution's. Why not try to get audio working there, first?
Get Outlook for Androidhttps://aka.ms/ghei36

---

From: SkurredBear [e-mail]
Sent: Friday, October 11, 2019, 3:09 PM
To: Genymobile/scrcpy
Cc: BigDogBoy; Mention
Subject: Re: [Genymobile/scrcpy] Forward audio (#14)

In theory, it should now also work on Windows (in MSYS2/mingw64), with the libusb package:

pacman -S mingw-w64-x86_64-libusb

However, when it try to communicate to open the device over USB on Windows, libusb_open() returns -3, which is (according to libusb_strerror()):

Access denied (insufficient permissions)

I have no idea how to get the permissions granted. Any ideas?

Hi, I managed to enable audio accessory mode on Android by changing my phone's usb driver to libusbK using Zadighttps://zadig.akeo.ie/ and your aoa-audiohttps://github.com/rom1v/aoa-audio, new audio device appear, but i don't know what the next step is, because first, there is a problem with the audio device driver (showing warning sign that the device cannot start code:10) and second, i'm unable to make pulseaudio on windowshttps://www.freedesktop.org/wiki/Software/PulseAudio/Ports/Windows/Support/ to work and i don't know what program that have similar function as pulseaudio on windows.

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[KeronCyst]

I don't understand why scrcpy can't do this when Vysor Pro can. If it takes downloading an app to the device, then that'd be totally fine with me.

[BigDogBoy]

Actually, with SCRCPY you kind of already do "download" an app to the device; except you don't; the app (via the magic that is ADB) is automatically pushed to your phone/tablet, and auto installed, without any user input.

Get Outlook for Androidhttps://aka.ms/ghei36

---

From: KeronCyst [e-mail]
Sent: Wednesday, October 16, 2019, 4:32 PM
To: Genymobile/scrcpy
Cc: BigDogBoy; Mention
Subject: Re: [Genymobile/scrcpy] Forward audio (#14)

I don't understand why scrcpy can't do this when Vysor Prohttps://www.vysor.io can. If it takes downloading an app to the device, then that'd be totally fine with me.

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[rom1v]

I don't understand why scrcpy can't do this when Vysor Pro can.

Does it? Audio forwarding is not listed in the Pro features on their page.

[djdisodo]

is there any prebuilt binary of audio branch for windows?

[rom1v]

1. Don't try the audio branch anymore, it's based on an old version of _scrcpy_ and is not maintained. You can try USBAudio instead.
2. AOA audio, the feature used by USBaudio, is deprecated since Android 8.0, so consider the whole thing obsolete.
3. Neither the audio branch nor USBaudio may work on Windows. Don't waste your time.
4. Now, we want to use the playback capture API introduced in Android 10, if possible. This needs to be investigated.

[ichirou2910]

So basically audio forwarding is impossible now? Im using android 9. Maybe wait for A.10 then.

[djdisodo]

@rom1v so... is there no way to work on android 8,9?

[thebombzen]

Is there any sort of plan in the relatively near future to implement audio again on Android 10?

[iamogopogo]

the device must be connected via USB (not adb connect)

So I guess this wouldn't work wirelessly using tcpip then? I spoke with you on Reddit a few months back when testing scrcpy to cast an Oculus Quest with the Raspberry Pi 3B+, but I couldn't get above 320x320 without serious lag. But now with a Raspberry Pi 4 with 4 GB's of RAM, the thing's pretty much flawless, maxing out at 8MB/s at full resolution before lagging, but if I set to -m 720, I can bump it well above -b 35M. Now I just need audio...I planned on using a $20 sound card I picked up, connecting a bluetooth receiver to the line-in, then playing over the desktop...somehow. If this feature doesn't work wirelessly, will it still pull the audio through the sound card? That would make playback over the desktop a lot easier.

[linggongzhi]

h264和FFmpeg已经把音频都发送出去了，自己编解码加上即可实现，做好音视频同步即可。

[amanjaymariner]

scrcpy is working fine and i have installed usbaudio aslo both seems working fine but when using my 3.5 mm jack of my linux destro could not able to find the audio

usbaudio

amanjay@MarinerPC:~$ usbaudio
[INFO] Device: [18d1:2d05] 8e51ae0a
[INFO] Audio forwarding enabled
[INFO] Matching PulseAudio input source found: 4 (18d1:2d05) OnePlus_OnePlus_8e51ae0a
[INFO] Playing pulse://4
VLC media player 3.0.3 Vetinari (revision 3.0.3-1-0-gc2bb759264)
[000055d490bb2bc0] dummy interface: using the dummy interface module...

scrcpy

amanjay@MarinerPC:~$ scrcpy
INFO: scrcpy 1.10 https://github.com/Genymobile/scrcpy
[100%] /data/local/tmp/scrcpy-server.jar
INFO: Initial texture: 1080x1920
amanjay@MarinerPC:~$

please help @rom1v

[KeronCyst]

What is usbaudio? Is that a free service? A link would be very helpful 🙏

[linggongzhi]

What is usbaudio? Is that a free service? A link would be very helpful 🙏

作者的个人blog，有他的各种项目：
https://blog.rom1v.com/2019/06/introducing-usbaudio/

[KeronCyst]

Oh. Well, sadly, that one's too old for all Android 8.0+ devices:

_Note that AOA audio, the feature used by USBaudio, is deprecated since Android 8.0._

[amanjaymariner]

so USBaudio is not working for present updated android phones
is this correct

[imReker]

I don't understand why scrcpy can't do this when Vysor Pro can.

Does it? Audio forwarding is not listed in the Pro features on their page.

Vysor support audio forward for a very long time.
I think it use android.permission.CAPTURE_AUDIO_OUTPUT and can be granted via pm.

[rom1v]

Vysor support audio forward for a very long time.

Even without a rooted device?

I think it use android.permission.CAPTURE_AUDIO_OUTPUT and can be granted via pm.

This permission has protection level signature|privileged (source), and shell does not have this permission.

Ref: https://github.com/JakeWharton/Telecine/issues/79

[imReker]

Vysor support audio forward for a very long time.

Even without a rooted device?

I think it use android.permission.CAPTURE_AUDIO_OUTPUT and can be granted via pm.

This permission has protection level signature|privileged (source), and shell does not have this permission.

Ref: JakeWharton/Telecine#79

Sorry for the wrong information. I tried Vysor Pro's audio mirror, it tells me that Google Home is needed. Seems like it use audio cast and made a fake server on PC.
More info: https://github.com/koush/vysor.io/issues/354

[amanjaymariner]

I basically not able to understand the issue i have installed both #scrcpy and #usbaudio correctly as per the instructions
the output from both are shown below:-
@rom1v Please explain this issue dude
scrcpy
INFO: scrcpy 1.10 https://github.com/Genymobile/scrcpy

• daemon not running. starting it now on port 5037 *
• daemon started successfully *
  [100%] /data/local/tmp/scrcpy-server.jar
  INFO: Initial texture: 1080x1920

usbaudio
[INFO] Device: [2a70:9011] 8e51ae0a
[INFO] Audio forwarding enabled
[INFO] Waiting for input source...
[INFO] Matching PulseAudio input source found: 2 (18d1:2d05) OnePlus_OnePlus_8e51ae0a
[INFO] Playing pulse://2
VLC media player 3.0.3 Vetinari (revision 3.0.3-1-0-gc2bb759264)
[000055b81b2cdc20] dummy interface: using the dummy interface module...

both r showing the above output scrcpy run fine i am love it beat games or movies works completely nice without lag only the audio suck please help me to fix this
Thanks in advance
@rom1v

[tony8077616]

From Android Source
https://source.android.com/devices/audio/usb

[duyy018]

Vysor support audio forward for a very long time.

Even without a rooted device?

@rom1v
So you can get forward audio easy in rooted device?

i think you should add that forward audio feature temporarily on rooted device only, while waiting for forward audio can be use on nonrooted device

[JulyMorning]

if it's possible to get it on rooted device, I agree.

[SamuelDasaolu]

hi, I'm still new to ubuntu and scrcpy but when I tried these two commands:
git fetch
git checkout origin/audio
it showed me that:
fatal: not a git repository (or any of the parent directories): .git
for both
I think I should add that I installed scrcpy using the "sudo apt install scrcpy command"
Please, I really need the audio

[LBensman]

@SamuelDasaolu , did you clone the repository previously? I.e. have you previously run git clone https://github.com/Genymobile/scrcpy.git? If not, you need to run it to clone the repo onto your machine. If yes, are you in the directory of the repo when you run fetch and checkout commands?

P.S. I don't know if it would conflict or not, but you may want to uninstall the copy that you previously apt installed, since you'll be building and running a branch version of scrcpy.

[SamuelDasaolu]

Don't bother anymore, I have done it as stated here :
https://github.com/rom1v/usbaudio/blob/master/README.md#build, thanks

On Tue, Jan 14, 2020, 23:07 LBensman [e-mail] wrote:

@SamuelDasaolu https://github.com/SamuelDasaolu , did you clone the
repository previously? I.e. have you previously run git clone
https://github.com/Genymobile/scrcpy.git? If not, you need to run it to
clone the repo onto your machine. If yes, are you in the directory of the
repo when you run fetch and checkout commands?

P.S. I don't know if it would conflict or not, but you may want to
uninstall the copy that you previously apt installed, since you'll be
building and running a branch version of scrcpy.

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[SamuelDasaolu]

@LBensman Something is seriously wrong, I used usb audio by following the instructions on this
site: https://github.com/rom1v/usbaudio/blob/master/README.md#build
The usb audio worked but the problem is that scrcpy doesnt work anymore
This was the error:
INFO: scrcpy 1.12 https://github.com/Genymobile/scrcpy

• daemon not running; starting now at tcp:5037
  ADB server didn't ACK
  Full server startup log: /tmp/adb.1000.log
  Server had pid: 13333
  --- adb starting (pid 13333) ---
  adb I 01-15 10:19:29 13333 13333 main.cpp:57] Android Debug Bridge version 1.0.39
  adb I 01-15 10:19:29 13333 13333 main.cpp:57] Version 1:8.1.0+r23-5~18.04
  adb I 01-15 10:19:29 13333 13333 main.cpp:57] Installed as /snap/scrcpy/204/usr/lib/android-sdk/platform-tools/adb
  adb I 01-15 10:19:29 13333 13333 main.cpp:57]
  error: cannot open transport registration socketpair: Permission denied

• failed to start daemon
  adb: error: failed to get feature set: cannot connect to daemon
  ERROR: "adb push" returned with value 1

i think i should add that I keep seeing this error message:
dpkg: error processing package cups (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
cups-daemon
cups-core-drivers
cups

[CruddyDrummer]

hi i am not someone who codes but i recently started using scrcpy to cast my screen to desktop and its working great so far. But i dont know how to stream audio from my phone to pc, I looked around google but i didnt find any solutions and even if i did find possibly, i was too dumb to realise how to do it.
Can please someone help me with this??

EDIT- i am on windows

[LBensman]

@SamuelDasaolu , I just started playing with usbaudio and have minimal experience with it. I haven't run into this issue (but I'm only at stage of pretty much just compiling it and tested usb interface activation on couple of devices, that's it), but take a look at this SO post with similar error, see if it helps?

[SamuelDasaolu]

@SamuelDasaolu , I just started playing with usbaudio and have minimal experience with it. I haven't run into this issue (but I'm only at stage of pretty much just compiling it and tested usb interface activation on couple of devices, that's it), but take a look at this SO post with similar error, see if it helps?

I had to reinstall ubuntu all over and then it worked flawlessly

[rom1v]

https://developer.android.com/guide/topics/media/playback-capture

The app must have the RECORD_AUDIO permission.

The shell does not have this permission :cry:

So it will require to install an apk. :disappointed:

[duyy018]

I didn't mind installing some apk :)

[Rayn322]

I would gladly install an apk

[KeronCyst]

Me too! This is a really huge feature to have. I'd install three apps if that's what it'd take, haha.

[Renari]

I get around this by just plugging a 3.5mm cable into the aux in on my motherboard. It's not a perfect solution since I occasionally get noise in the line, although I can usually filter it out using OBS.

[Bluscream]

Absolutely. Please make a companion APK

[CorgJR]

+1 for the companion APK that'd be awesome!

[tarun0]

You guys should check WO mic - app for android and driver for windows/linux and works with all - USB, bluetooth, Wifi and Wifi Direct. It's not open source but may serve as a workaround till some open source solution is available.

I used it when I used to record video from laptop and phone as a mic. There is a slight lag in audio but it should not be a very big deal (depending on the situation).

Also, if that app works, there certainly is some way to accomplish.

So far I'm using scrcpy for screen mirroring and bluetooth for audio and the combination works flawlessly. :)

[Renari]

@tarun0 It seems womic only allows you to select mics but not the system audio.

[NewUserHa]

no installing an apk! then scrcpy has no advantage than other Softwares since they all will install a junk apk/client to push ads, or as an app market.

[rom1v]

no installing an apk
they all will install a junk apk/client to push ads

This is just a technical constraint (push vs install). Such an apk would be installed locally (like gnirehtet does). No ads.

[NewUserHa]

I know but just can't stand it somehow, maybe it makes me thought about android 2.1~4.
like scrcpy-server is ok. but an app stays on phone....

[Bluscream]

@NewUserHa are you silly? The APK would just be if you need audio. If you dont need that you use scrcpy normally without apk.
And if you want audio but don't want it to bundle an apk, you either live with it or come up with a magical non-apk solution somehow.

Btw, who said the apk has to stay on your phone? The apk could get installed by scrcpy through ADB and instructed to self-uninstall when the connection is closed

[ichirou2910]

no installing an apk! then scrcpy has no advantage than other Softwares since they all will install a junk apk/client to push ads, or as an app market.

Srsly? Since when is an apk meant to have ads? It's just unreasonable.

[NewUserHa]

@Bluscream have you used android 2? do you know the android situation and what the point is?
like the screen mirror function in android, which can direct audio directly. I can't say but it's also an option.

adb uninstalling the apk when scrcpy closes may be a choice, of course.

but why don't you try to think and started gratuitously to blame and just know to say make an apk without thinking what it needs to maintain another new apk that needs to install on various devices for a current project and may encounter new issues to enhance that apk and attack others who raised a new different opinion?

[NewUserHa]

didn't say it has ads. only said that other same kind software has ads and it's so common and usual. the users probably dislike let communicate between pc and apks in some way because it's powerful and some insecure.
and it increases the user's worry.

[tarun0]

@Renari With system audio, I think you mean any audio playing on the phone. Well, it does forward everything. The catch is that it'll only work if the phone speakers are able to catch the sound. If the phone's volume is set to lowest and the laptop/connected system's volume is increased. It'd work okayish. I've tried that. Select Play in speaker option in the system-side app's (WO mic client) Options tab.

I accept that it's not an ideal solution, though. Also, I don't think this issue is the right place to talk about a third-party app. :P

[Arlevate]

I've had a solution that worked right away without any further installations (though I might have had something compatible for it before trying this, no idea).

I'm not sure has worked for anyone else thus far without any direct tinkering of their own:

• Connected phone to Laptop via USB (for scrcpy).
• Connected phone to Laptop via Bluetooth.
• Once paired, bluez reported a new source detected.
• Plugged headset into Laptop 3.5mm jack.
• Simultaneous audio from both devices.

I discovered it by mistake so I'm not sure why it works, and I haven't taken any calls while using it yet. If anyone else has success with this setup too I'd be interested to know. Latency seems minimal, if ever noticeable at all.

[DeedleFake]

@Etavelra This seems to only work with hardware support for it via A2DP on both the phone and the computer.

[Zero3K]

@rom1v https://github.com/OpenKinect/libfreenect2/issues/870 and https://github.com/qzind/qz-print/issues/181 both have potential fixes for the "insufficient privileges" error.

[LBensman]

@Etavelra, this also is not very practical if you have more than a couple device to manage or work with like that. Once you have more than a few, BT stack can have troubles supporting the number of devices, as well as potential bandwidth issues.

[lonewolf1321]

I am using windows (desktop-no bluetooth) ,i tried every method - plugging into 3.5mm cable aux (lot of noise when connected with usb for scrcpy ok only when nothing connected via usb ) and wo mic-( i couldn't connect both scrcpy and wo muc at the same time one will disconnect when other open also playing on both android and speakers at same time with different latency was really irritating)

[lonewolf1321]

@Renari With system audio, I think you mean any audio playing on the phone. Well, it does forward everything. The catch is that it'll only work if the phone speakers are able to catch the sound. If the phone's volume is set to lowest and the laptop/connected system's volume is increased. It'd work okayish. I've tried that. Select Play in speaker option in the system-side app's (WO mic client) Options tab.

I accept that it's not an ideal solution, though. Also, I don't think this issue is the right place to talk about a third-party app. :P

Is there a way to run both apps scrcpy and wu mic simultaneously through usb in my case every time one will disconnect

[rom1v]

I took few hours to write a quick-and-dirty PoC of the Playback capture API from Android Q, but I failed to avoid a SecurityException so far: https://github.com/rom1v/qaudio (read the README)

java.lang.SecurityException: Media projections require a foreground service of type ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION

I'll investigate when I have some time, but if you find the problem, your help is welcome :wink:

[MaKangtai]

Dear Sir, if you can solve the problem of the Windows screen and audio input at the same time, I don't mind if you bundle the installation of other programs. Perhaps you can add an instruction to automatically or optionally uninstall when the program ends. If you can fix the audio problem, scrcpy will be perfect for Android screencasting, as good as iTools.Please allow me to give you this opinion, thank you.

[Bluscream]

I took few hours to write a quick-and-dirty PoC

mind dropping me a APK here? maybe it's a device/version related issue.
Someone indicated that it might work on SDK 28

[lonewolf1321]

Could not find matching PulseAudio input source" pls help

[Ddorda]

maybe it's possible to use HFP for Linux as a solution?

[tarun0]

@lonewolf1321 Use Blueman in Linux to use your system as speaker for your Bluetooth device (here, your phone).

And regarding using Wo Mic along with scrcpy, I don't think it's feasible. Maybe when both things are done from the same app (scrcpy), it can be done? @rom1v You'd be better person to comment.

As the last resort, buy a wifi adapter and use that (Wifi or Wifi direct) to use Womic if you really have to.

[Bahal]

Hey guys.
I want to stream my mobile game with sound into my PC OBS.
The problem is using apps like Vysor or Apowermirror can't get the sound to transfer.
I tried with an app called Screen Stream Mirroring but I can only get the external mic to work. the other option just doesn't work.
I have a Mi9 phone. It only has a USB-C port.
If I get a USB-C to USB-C+3.5mm Jack Converter, would that solve my problem? Will I be able to transfer my game stream footage to my pc and sound at the same time?

[MaKangtai]

Hey guys.
I want to stream my mobile game with sound into my PC OBS.
The problem is using apps like Vysor or Apowermirror can't get the sound to transfer.
I tried with an app called Screen Stream Mirroring but I can only get the external mic to work. the other option just doesn't work.
I have a Mi9 phone. It only has a USB-C port.
If I get a USB-C to USB-C+3.5mm Jack Converter, would that solve my problem? Will I be able to transfer my game stream footage to my pc and sound at the same time?

If you're using a desktop computer instead of a laptop, simply buy a public to public audio cable to access the rear audio interface for audio input. If you're using a laptop like I am, there's no other way to pass in audio for now.

[RealRexen]

I'm on a laptop and I have a way to pass audio, heck I even used the line in option for my 3DS, Switch Lite and Lg Stylo 4 before. It helps the port is used for all sorts of audio stuff

[Bahal]

I'm on a laptop and I have a way to pass audio, heck I even used the line in option for my 3DS, Switch Lite and Lg Stylo 4 before. It helps the port is used for all sorts of audio stuff

How do you do that? Does your laptop support Line in option?

[Bahal]

Hey guys.
I want to stream my mobile game with sound into my PC OBS.
The problem is using apps like Vysor or Apowermirror can't get the sound to transfer.
I tried with an app called Screen Stream Mirroring but I can only get the external mic to work. the other option just doesn't work.
I have a Mi9 phone. It only has a USB-C port.
If I get a USB-C to USB-C+3.5mm Jack Converter, would that solve my problem? Will I be able to transfer my game stream footage to my pc and sound at the same time?

If you're using a desktop computer instead of a laptop, simply buy a public to public audio cable to access the rear audio interface for audio input. If you're using a laptop like I am, there's no other way to pass in audio for now.

Can't I buy an external USB sound card with blue port?

[RealRexen]

I'm on a laptop and I have a way to pass audio, heck I even used the line in option for my 3DS, Switch Lite and Lg Stylo 4 before. It helps the port is used for all sorts of audio stuff

How do you do that? Does your laptop support Line in option?

Its mostly a driver support that reroutes audio based on the option picked, so If I plug in headphones the software tells Windows that headphones were plug it but if I chose the Line In option then it tells Windows a Line In device was plug in. I do have to set the option to "listen to this device" in the Line In Options for it to work, my devices just see the Line in Option as being plug in to Headphones as I used the Aux cable that came with my Bluetooth headphones.

[MaKangtai]

Hey guys.
I want to stream my mobile game with sound into my PC OBS.
The problem is using apps like Vysor or Apowermirror can't get the sound to transfer.
I tried with an app called Screen Stream Mirroring but I can only get the external mic to work. the other option just doesn't work.
I have a Mi9 phone. It only has a USB-C port.
If I get a USB-C to USB-C+3.5mm Jack Converter, would that solve my problem? Will I be able to transfer my game stream footage to my pc and sound at the same time?

If you're using a desktop computer instead of a laptop, simply buy a public to public audio cable to access the rear audio interface for audio input. If you're using a laptop like I am, there's no other way to pass in audio for now.

Can't I buy an external USB sound card with blue port?

Maybe it can work，but the method I provide is tested.So, you can try the alternative.

[Bahal]

Your provided method doesn't work on laptop. U said it. My Laptop doesn't have Blue port. That's why I wanna buy an external sound card. Will it work?

[Bahal]

I'm on a laptop and I have a way to pass audio, heck I even used the line in option for my 3DS, Switch Lite and Lg Stylo 4 before. It helps the port is used for all sorts of audio stuff

How do you do that? Does your laptop support Line in option?

Its mostly a driver support that reroutes audio based on the option picked, so If I plug in headphones the software tells Windows that headphones were plug it but if I chose the Line In option then it tells Windows a Line In device was plug in. I do have to set the option to "listen to this device" in the Line In Options for it to work, my devices just see the Line in Option as being plug in to Headphones as I used the Aux cable that came with my Bluetooth headphones.

I searched the app that said that message. It's a Dell Laptop app. Probably this function is just for your laptop brand.

[tarun0]

Your provided method doesn't work on laptop. U said it. My Laptop doesn't have Blue port. That's why I wanna buy an external sound card. Will it work?

External/USB sound card sounds more promising. I had used that to connect my guitar using that. It should most probably work with your phone by using an AUX and inserting it to mic port of sound card and selecting 'Listen to this device' in sound device (mic) settings.

Nowadays laptops don't come with line in option hence, using aux directly won't work.

[diegolopd97]

I took few hours to write a quick-and-dirty PoC of the Playback capture API from Android Q, but I failed to avoid a SecurityException so far: https://github.com/rom1v/qaudio (read the README)

java.lang.SecurityException: Media projections require a foreground service of type ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION

I'll investigate when I have some time, but if you find the problem, your help is welcome 😉

When you call startForeground the id can't be 0.

[ghost]

You can refer to HuaWei multi screen collaboration, they have solved this problem.

[MaKangtai]

You can refer to HuaWei multi screen collaboration, they have solved this problem.

Just now, I tried Huawei multi screen collaboration, without audio.

[ghost]

You can refer to HuaWei multi screen collaboration, they have solved this problem.

Just now, I tried Huawei multi screen collaboration, without audio.

Fake news! Huawei multi screen collaboration can play audio by PC.

[Bluscream]

It didn't work for me either with my Huawei Honor 7A

[MaKangtai]

You can refer to HuaWei multi screen collaboration, they have solved this problem.

Just now, I tried Huawei multi screen collaboration, without audio.

Fake news! Huawei multi screen collaboration can play audio by PC.

But it does not forward audio on my Huawei mate 30 5G.What's the reason?

[ruairidh74]

I found a simple solution for Samsung phones. If you use Samsung Dex you can route your audio through USB-C. Once Dex is open and running, minimise it. You can now use scrcpy with audio 😉

[sanydube]

i am using oneplus 7 i want audio forwording for it. please give any solution if available.

[Renari]

i am using oneplus 7 i want audio forwording for it. please give any solution if available.

https://www.amazon.com/AmazonBasics-Stereo-Audio-Cable-Meters/dp/B00NO73MUQ/

[BigDogBoy]

Ok so heres a wholly stupid question. Would it work via the Linux environment in windows 10?

I'm not nearly as techy, but, from what I can tell it should work with (Windows Subsystem for Linux) WSL 2, as, with it, the ([Windows] New Technology File System) NTFS, and Linux Kenel, and Linux file system are practically integerated.

[BigDogBoy]

You can refer to HuaWei multi screen collaboration, they have solved this problem.

I just wanted to cleear up all the lingering question/concerns; I just looked (HuaWei multi screen collaboration) it up on google, and found, that there are a baffling number of requirements; basically, it wouldnt work for me, nor practically anyone who doesn't have a Huawei phone, and even then, they have to have at least EMUI 10.0/Magic UI 3.0 or later.

[sanydube]

i am using oneplus 7 i want audio forwording for it. please give any solution if available.

https://www.amazon.com/AmazonBasics-Stereo-Audio-Cable-Meters/dp/B00NO73MUQ/

OnePlus 7 don't have audio jack

[Renari]

i am using oneplus 7 i want audio forwording for it. please give any solution if available.

amazon.com/AmazonBasics-Stereo-Audio-Cable-Meters/dp/B00NO73MUQ

OnePlus 7 don't have audio jack

You can also use a Bluetooth dongle.

Ok so heres a wholly stupid question. Would it work via the Linux environment in windows 10?

I'm not nearly as techy, but, from what I can tell it should work with (Windows Subsystem for Linux) WSL 2, as, with it, the ([Windows] New Technology File System) NTFS, and Linux Kenel, and Linux file system are practically integerated.

It does not, check here: https://github.com/Genymobile/scrcpy/issues/14#issuecomment-522268600

[sanydube]

i am using oneplus 7 i want audio forwording for it. please give any solution if available.

amazon.com/AmazonBasics-Stereo-Audio-Cable-Meters/dp/B00NO73MUQ

OnePlus 7 don't have audio jack

You can also use a Bluetooth dongle.

Ok so heres a wholly stupid question. Would it work via the Linux environment in windows 10?

I'm not nearly as techy, but, from what I can tell it should work with (Windows Subsystem for Linux) WSL 2, as, with it, the ([Windows] New Technology File System) NTFS, and Linux Kenel, and Linux file system are practically integerated.

It does not, check here: #14 (comment)

I am searching for it from last 3 months
I didn't find any app or anything which forword audio using usb or bluetooth or wifi.
If you know helpe

[Renari]

https://android.stackexchange.com/questions/19336/is-it-possible-to-direct-all-audio-output-including-music-output-to-a-bluetoot

This thread has people using bluetooth to listen to audio on a bluetooth headset. You should be able to mimic this using a dongle.

[kdankert]

Is there any chance that this feature is coming to mac and windows as well?

[barfin]

looks like this work fine for android 8 but not android 9
(usbaudio solution)

[Bluscream]

@rom1v did you give up?

[tarun0]

usbaudio solution

@barfin Can you specify which usbaudio solution are you referring to here? It's become a long thread; so difficult to spot.

[barfin]

usbaudio solution

@barfin Can you specify which usbaudio solution are you referring to here? It's become a long thread; so difficult to spot.

this one right here
https://github.com/rom1v/usbaudio

but a temporary solution I'm using right has nothing to do with adb, scrcpy,etc
I use Bluetooth to mirror audio from my android device to linux

[rom1v]

@Bluscream

@rom1v did you give up?

I abandon usbaudio, because AOA is obsolete since Android 8.

However, I plan to implement audio forwarding via the Playback Capture API. See https://github.com/Genymobile/scrcpy/issues/1407#issuecomment-630306104

But I work on this project (scrcpy) on my free time (which is, basically, my sleep time), and there are always other things to do. I wish I had more time to work on this. But I will do it.

[rizaumami]

but a temporary solution I'm using right has nothing to do with adb, scrcpy,etc
I use Bluetooth to mirror audio from my android device to linux

Do you notice any lag?
Because when I connect scrcpy via wifi and stream audio via BT USB dongle, the mirror is stutter.
But if I connect scrcpy via USB cable the screen mirrored normally.
It just like scrcpy and bluetooth is fight for bandwidth or something :laughing:

[duyy018]

for now i use scrpy for display, and vysor for sound, it must be on same wifi. work fine for recording. its kinda laggy for live streaming because using same wifi for upload and playing game simultaneously. using Xiaomi A2 (no jack audio port :( )

[rom1v]

and vysor for sound

Does Vysor transmit the device sound, or just records the microphone?

[barfin]

but a temporary solution I'm using right has nothing to do with adb, scrcpy,etc
I use Bluetooth to mirror audio from my android device to linux

Do you notice any lag?
Because when I connect scrcpy via wifi and stream audio via BT USB dongle, the mirror is stutter.
But if I connect scrcpy via USB cable the screen mirrored normally.
It just like scrcpy and bluetooth is fight for bandwidth or something laughing

yes it has input lag but it's better than nothing

[Bluscream]

People are starting to look for other solutions and abandon scrcpy
https://youtu.be/0WbRIWfaClE -> https://youtu.be/s_0t593Ql1w

[gdmtplays]

and vysor for sound

Does Vysor transmit the device sound, or just records the microphone?

Vysor, with the recent update now transmits sound internally. It wasn't able to do this back then. Well it does, but on very limited devices.

[gdmtplays]

for now i use scrpy for display, and vysor for sound, it must be on same wifi. work fine for recording. its kinda laggy for live streaming because using same wifi for upload and playing game simultaneously. using Xiaomi A2 (no jack audio port :( )

Is scrcpy faster in terms of screen mirror compared to vysor? The latest update made in possible to record/transmit internal audio. I haven't tried doing just audio on vysor. Not even sure thats possible but if it is, would like to know how.

[srjbs11]

anyone found an audio solution for galaxy note 10+ when has no earphone jack?

[rom1v]

I implemented a separate tool (it's a PoC, but it works) to forward audio for Android 10:

• https://blog.rom1v.com/2020/06/audio-forwarding-on-android-10/
• https://github.com/rom1v/sndcpy

[barfin]

I implemented a separate tool (it's a PoC, but it works) to forward audio for Android 10:

* https://blog.rom1v.com/2020/06/audio-forwarding-on-android-10/

* https://github.com/rom1v/sndcpy

is there any solution for android 9? usbaudio is too old for android 9 and sndcpy is too new
nothing works on it

[Fabiok89]

I implemented a separate tool (it's a PoC, but it works) to forward audio for Android 10:

* https://blog.rom1v.com/2020/06/audio-forwarding-on-android-10/

* https://github.com/rom1v/sndcpy

is there any solution for android 9? usbaudio is too old for android 9 and sndcpy is too new
nothing works on it

hello ... I followed your guide but when I click send on the cmd after authorizing from the phone, I am waiting for connection I start any game and the audio is heard only on the mobile phone .. you have some solution to recommend
i am using windows 10 pc and samsung s9 phone with android 10

[akashsawale49]

so i implemented this and made changes in the sndcpy.bat file
i replaces the %VLC% line with this because my vlc media wont show after executing

vlc --demux rawaud --play-and-exit tcp://localhost:%SNDCPY_PORT%

so now my vlc opens up and playlist has the item tcp://localhost:2800
but i cannot hear any audio..
please help
i am using windows os and my phone has android 10

[HilbertPurba]

I use the Bluetooth Audio Receiver app from the microsoft store to forward my phone audio to PC thanks to the new Windows 10 May 2020 Update (2004). You need a bluetooth adapter and a playback device that supports A2DP SINK for this to work.

To make this possible you just need to pair your device with your PC and connect it using the app. I tested it and it works really well. Here's the link to the app if you're interested.
https://www.microsoft.com/en-us/p/bluetooth-audio-receiver/9n9wclwdqs5j

[srjbs11]

@HillBird this is great. Can I know which Bluetooth adapter you are using? it should be 5.0?

[HilbertPurba]

@HillBird this is great. Can I know which Bluetooth adapter you are using? it should be 5.0?

As long as you have a bluetooth feature available on your pc, you could give it a shot :)
Remember you need the latest update of Windows 10 (2004) to work.

[dheerendramehar]

@HillBird Thank you! It works. Earlier I was getting audio with noise and crackles. I just turned off the WiFi and problem gone. I think there is some interference on WiFi and Bluetooth channels as both use 2.4GHz frequency. Any thoughts on this?

[HilbertPurba]

@HillBird Thank you! It works. Earlier I was getting audio with noise and crackles. I just turned off the WiFi and problem gone. I think there is some interference on WiFi and Bluetooth channels as both use 2.4GHz frequency. Any thoughts on this?

Yeah when I play games on my phone, the noise sounds a little bit delayed and crackled too.

[Bluscream]

These are all workarounds which don't solve the issue at hand

[hugonh]

Actually it worked on my redmi note 8, windows 10 2004, using bluetooth audio receiver app!