How to access raw audio data (audioRaw) from MediaStream using WebRTC?

[umbala23]

Hi, thank you for your great work on this project.

I'm currently working on a voice processing application using WebRTC, and I need to access the raw audio data (PCM or any low-level audio buffer) from a MediaStream or an audio track.

Specifically, I want to capture the raw audio bytes (similar to audioRaw) while a WebRTC call is ongoing — ideally in real-time for processing or sending to another service.

I've reviewed the MediaStream and AudioTrack APIs, but I couldn't find a clear way to extract raw audio buffers from them directly.

Could you please advise:

• Is it possible to get raw audio data from a local or remote audio track?
• Do I need to tap into the audio renderer or capture device manually?
• Any examples or code references would be greatly appreciated.

Thank you in advance!

[maitrungduc1410]

Is it possible to get raw audio data from a local or remote audio track?

yes

can try this gpt response: https://grok.com/share/bGVnYWN5_92281fa3-0673-4e8b-a42c-49e92b86cc0f

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better to use worker thread to handle media processing