'How to combine multiple video webRTC mediaStreamTrack at ffmpeg / ffmpegwasm

I'm attempting to combine or mix multiple video tracks into a single mediaStreamTrack, or a mediaStream, I don't want to utilize Canvas as it's not readily available across multiple platforms [mobile devices, react native, etc]

Is there such a possibility through some library of sorts?

I found this but am really uncertain: https://github.com/ffmpegwasm/ffmpeg.wasm

Any insight would be greatly appreciated, thanks so much!



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