We are using hls.js to playback some streams that were generated with ffmpeg and it works almost everywhere (firefox or chromium, as well as safari on m1 mac mini) but we get an issue on safari on intel macs. We are not using native HLS playback on purpose. You can reproduce with: https://people.igalia.com/tsaunier/bugs/mse_safari_decoder_error/index.html works where we get an "Error after playing back a few frames without more details.
<rdar://problem/85749437>
For the record, this is still happening