Eh, ffmpeg is already pretty long in very optimized native builds (as in, reencoding from a 4k master to a 1080p decent quality MP4 for yt can already be 0.5x t

Eh, ffmpeg is already pretty long in very optimized native builds (as in, reencoding from a 4k master to a 1080p decent quality MP4 for yt can already be 0.5x the duration of the video)... I don't see it becoming faster by being put in a web browser, especially when there is likely no access to hardware encoding APIs.