Pytube: Downloaded video has no audio

[murdak]

When downloading from filtered stream with the command:

yt.streams.filter(subtype='mp4', res='1080p').first().download()

results a video file with no audio.

But, regular command not using filter is OK.

yt.streams.first().download()

pytube 9.4
Python 3.6

[murdak]

Sorry didn't know about YouTube's adaptive streaming.

This is a none issue.
Please close.

Thanks!

[RemiRigal]

Sorry didn't know about YouTube's adaptive streaming.

This is a none issue.
Please close.

Thanks!

I don't get why you talk about adaptive streaming, can you elaborate on why is it linked ? Thanks

[asadamatic]

@RemiRigal
Not all video streams in pytube has sound. Streams with audio_codec = 'mp4a.40.2' have sound.

[dilhelh]

@RemiRigal This is a know issue related to the streaming technique called Dynamic Adaptive Streaming over HTTP or commonly known as DASH.
As the documentation says:

You now need to download both the audio and video tracks and then post-process them with software like FFmpeg to merge them.

Therefore, videos with higher resolution than 360p aren't based on progressive stream so you need to manually merge the video and audio files.

[github-actions[bot]]

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