Obs-mac-virtualcam: Camera doesn't come up on discord

[mchety]

I saw on the compatibility list that it worked with discord but on the discord desktop app the camera doesn't come up. Does it only work on the web app?

[johnboiles]

Please fill out all the details that come up in the template when you create a new issue.

[mchety]

The virtual webcam doesn't show up on the possible cameras for the discord desktop.

Steps to reproduce the behavior:

1. Open OBS
2. Start Virtual Webcam
3. Open discord
4. Camera Doesn't come up

Expected behavior
I thought that the Virtual Camera would just show up under possible cameras for discord.

Info:

• macOS Catalina 10.15.3
  -Discord 0.0.257
• Virtualcam version 1.1.0
• OBS version 25.0.8

It works fine on zoom and google meets.

[johnboiles]

And you've restarted Discord? Have you also tried restarting your computer?

[mchety]

I tried restarting my computer and discord, and I also updated my computer to the latest version of Catalina.

[gxalpha]

Can y'all do two things?

• Open Console.app and watch for any logs about obs-mac-virtualcam when you run the host apps (e.g. jitsi/chrome). Paste those logs here
• Run this ls /Library/CoreMediaIO/Plug-Ins/DAL and make sure obs-mac-virtualcam.plugin is there

Please do these and report back

[mchety]

default 11:14:19.550971-0600 obs OBSDAL: Device unhandled hasPropertyWithAddress for kCMIOObjectPropertyOwnedObjects
default 11:14:19.939884-0600 Google Chrome Helper (Plugin) OBSDAL: Server is not available
default 11:14:20.939882-0600 Google Chrome Helper (Plugin) OBSDAL: Server is not available
default 11:14:21.940149-0600 Google Chrome Helper (Plugin) OBSDAL: Server is not available
default 11:14:22.940547-0600 Google Chrome Helper (Plugin) OBSDAL: Server is not available
default 11:14:23.940551-0600 Google Chrome Helper (Plugin) OBSDAL: Server is not available
default 11:14:24.940695-0600 Google Chrome Helper (Plugin) OBSDAL: Attempting connection
default 11:14:24.940783-0600 Google Chrome Helper (Plugin) OBSDAL: -[MachClient connectToServer]
default 11:14:24.941018-0600 Google Chrome Helper (Plugin) OBSDAL: Initialized mach port 69635 for receiving
default 11:14:24.952095-0600 Google Chrome Helper (Plugin) OBSDAL: -[Stream stopServingDefaultFrames]
default 11:15:49.582757-0600 Google Chrome Helper (Plugin) OBSDAL: Received stop message
default 11:15:49.583031-0600 Google Chrome Helper (Plugin) OBSDAL: -[PlugIn receivedStop] Restarting connection
default 11:15:49.583251-0600 Google Chrome Helper (Plugin) OBSDAL: -[PlugIn stopStream]
default 11:15:49.583479-0600 Google Chrome Helper (Plugin) OBSDAL: -[PlugIn startStream]
default 11:15:49.583765-0600 Google Chrome Helper (Plugin) OBSDAL: -[Stream startServingDefaultFrames]
default 11:15:49.584522-0600 Google Chrome Helper (Plugin) OBSDAL: Attempting connection
default 11:15:49.584784-0600 Google Chrome Helper (Plugin) OBSDAL: -[MachClient connectToServer]
default 11:15:50.942926-0600 Google Chrome Helper (Plugin) OBSDAL: Attempting connection
default 11:15:50.943320-0600 Google Chrome Helper (Plugin) OBSDAL: -[MachClient connectToServer]
default 11:15:51.952261-0600 Google Chrome Helper (Plugin) OBSDAL: Attempting connection
default 11:15:51.952563-0600 Google Chrome Helper (Plugin) OBSDAL: -[MachClient connectToServer]
default 11:15:52.944976-0600 Google Chrome Helper (Plugin) OBSDAL: Attempting connection
default 11:15:52.945442-0600 Google Chrome Helper (Plugin) OBSDAL: -[MachClient connectToServer]
default 11:15:53.943279-0600 Google Chrome Helper (Plugin) OBSDAL: Attempting connection
default 11:15:53.943569-0600 Google Chrome Helper (Plugin) OBSDAL: -[MachClient connectToServer]
default 11:15:54.943311-0600 Google Chrome Helper (Plugin) OBSDAL: Attempting connection
default 11:15:54.943608-0600 Google Chrome Helper (Plugin) OBSDAL: -[MachClient connectToServer]
default 11:15:56.743216-0600 obs OBSDAL: HardwarePlugIn_Teardown self=0x2814e590

The plugin was there when I checked at /Library/CoreMediaIO/Plug-Ins/DAL

[MisterEdel]

Same for me even after Updating and restart the Mac I get this message

/Library/CoreMediaIO/Plug-Ins/DAL/obs-mac-virtualcam.plugin/Contents/MacOS/obs-mac-virtualcam: code signature in (/Library/CoreMediaIO/Plug-Ins/DAL/obs-mac-virtualcam.plugin/Contents/MacOS/obs-mac-virtualcam) not valid for use in process using Library Validation: mapping process and mapped file (non-platform) have different Team IDs

[willjstevens]

I am having a similar issue - the virtual camera does not come up in other applications. These include Zoom and AWS Chime.

I removed the old plugin file, installed the package as instructed, restarted my Mac, started OBS and started the Virtual Camera through the Tools menu, restarted Zoom and Chime. But nothing showing up in the other apps.

Environment
macOS Catalina 10.15.4
Virtualcam version 1.1.0
OBS version 25.0.8

[johnboiles]

Uh oh, looks like Discord might have also removed support for virtual cameras via CoreMediaIO DAL :/ Can y'all confirm that other virtual cameras (like Snapchat's Snap Camera) also don't show up in Discord.

[gxalpha]

Can't confirm that it doesn't work with Discord, works fine for me (OBS 25.0.8, VCam 1.0.0 and Discord 0.0.257 (Stable 60516 (f6ec4b5)).)
(There shouldn't be a change in Compatibility between 1.0.0 and 1.1.0, I could test 1.1.0 tho)

[el-hoshino]

Neither SnapCamera nor obs show up on my environment 😢

My environment:

Discord: 0.0.257 (0.0.257)
macOS: 10.15.4（19E287）

[bgilmore]

Library validation performed by the macOS Hardened Runtime is preventing Discord from loading the OBS Virtual Camera (and Snap Camera) libraries. Luckily, we can turn this off by resigning the application with the following entitlement: https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_security_cs_disable-library-validation

The relevant application bundle is /Applications/Discord.app/Contents/Frameworks/Discord Helper (Renderer).app

# Extract the default entitlements
codesign -d --entitlements /tmp/entitlements.xml /Applications/Discord.app/Contents/Frameworks/Discord\ Helper\ \(Renderer\).app

# Editing /tmp/entitlements.xml:
#  - delete the binary garbage from the beginning of the file
#  - add com.apple.security.cs.disable-library-validation to the entitlements

# Resign the helper using the new entitlements and your own key
codesign -f -s "<Developer ID>" --entitlements /tmp/entitlements.xml /Applications/Discord.app/Contents/Frameworks/Discord\ Helper\ \(Renderer\).app

This procedure is pretty awful since it's going to break if/when Discord pushes updated helper binaries. Also it assumes you have a developer certificate (or a local self-signed codesigning cert). This is a temporary workaround at best.

[el-hoshino]

@bgilmore Worked for me! Thanks very much 🎉

p.s. For people don't know how to resign the helper, you can check this stackoverflow thread:
https://stackoverflow.com/questions/36888535/how-do-i-resign-app-with-entitlements

[djkevinadam]

Hi! I have the same problem,I've been trying to do the workaround but I think I don't really understand how to do it... what should I put to my terminal? also where does the Developer ID came from? thanks in advice!

Discord 0.0.257 (0.0.257)

OBS 25.0.8 64 Bit

Mac Os X 10.14.6 (18G4032)

obs-mac-virtualcam-3ca8f62-v1.2.0

[el-hoshino]

@djkevinadam If you've already joined the Apple Developer Program and have been developing apps for macOS/iOS/watchOS/tvOS with Xcode, you should be able to find your Developer ID info from keychain:

(I have multiple developer certificates because I have my personal ADP certificates and my company's ADP/ADEP certificates)

If not, I haven't tested it yet but hopefully just removing the codesign maybe is also useful:
https://github.com/johnboiles/obs-mac-virtualcam/wiki/Compatibility#apps-dont-allow-dal-plugins

[timopagana]

I've fixed this problem by just removing the signature for the "Helper (Renderer).app". In my case, I had to remove it for Discord and Skype. The virtual Cam stopped working for Skype one day without an update or whatever notable happened.

codesign --remove-signature "/Applications/Discord.app/Contents/Frameworks/Discord Helper (Renderer).app"

codesign --remove-signature "/Applications/Skype.app/Contents/Frameworks/Skype Helper (Renderer).app"

macOS 10.15.4 (19E287)
Discord 0.0.257 (0.0.257)
Skype 8.60.0.76
OBS 25.0.8
obs-mac-virtualcam 1.1

[djkevinadam]

@djkevinadam If you've already joined the Apple Developer Program and have been developing apps for macOS/iOS/watchOS/tvOS with Xcode, you should be able to find your Developer ID info from keychain:

(I have multiple developer certificates because I have my personal ADP certificates and my company's ADP/ADEP certificates)

If not, I haven't tested it yet but hopefully just removing the codesign maybe is also useful:
https://github.com/johnboiles/obs-mac-virtualcam/wiki/Compatibility#apps-dont-allow-dal-plugins

Alright Thank you!!!

but I found out this works for me as well!

I've fixed this problem by just removing the signature for the "Helper (Renderer).app". In my case, I had to remove it for Discord and Skype. The virtual Cam stopped working for Skype one day without an update or whatever notable happened.

codesign --remove-signature "/Applications/Discord.app/Contents/Frameworks/Discord Helper (Renderer).app"

codesign --remove-signature "/Applications/Skype.app/Contents/Frameworks/Skype Helper (Renderer).app"

macOS 10.15.4 (19E287)
Discord 0.0.257 (0.0.257)
Skype 8.60.0.76
OBS 25.0.8
obs-mac-virtualcam 1.1

thanks everyone!