[jampekka]

I have it working with WebCodecs, but currently i-frames only videos and all the decoded frames are read to memory. Not impossible to lift these restrictions, but the current WebCodec API will likely make it a bit brittle (and/or janky). For my current case this is not a big problem so I haven't fought with it too much.

Figuring out libav.js demuxing may be a bit of a challenge, even though the API is quite nice as traditional AV APIs go. I'll put out my small wrapper for these in a few days.

Edit: to be clear I don't have anything to do with libav.js other than happening to find it and using it to scratch my itch. Most demuxing examples for WebCodecs use mp4box.js which really makes one a bit uncomfortably intimate with guts of the MP4 format.