It seems like 1.8.5 will be released tomorrow. Going to test that too. @nvivot please post some result. (I already tested 1.8.3 but I hope to get second pair of eyes on the same issue.)
For wasm threads, I also don’t see multi-core cpu helps. Only 1 core is active in video decoding, which is the most compute-intensive task. I would like to throw more cpu cores at this problem if possible. Zoom could open source the code that gets compiled to wasm.
For webcodecs, I am able to get video/audio data from websocket. But there is no way to modify as mitm.
I hope zoom can document some ways to swap in video/audio decoder. There are more efficient simd-ready h264 wasm decoders on github.