I just don't know what else I can do. I compared Chromium and Firefox in html5test.com, got same result. All browsers says they doesn't support H.265. I turned off HW acceleration, nothing changes. I installed ffmpeg-libs and other codecs from Fedora wiki. Nothing changes. Videos are same vp9 in browsers. I spent all day googling but nothing helpful. Source: 6 months ago

What does https://html5test.com/ say for h.264, VP8, VP9 and Theora support? What does it say for aac, Opus, Vorbis and mp3 support? Source: 6 months ago

You can use this website also https://html5test.com is really helpful with more datails. Source: 6 months ago

If I go on html5test.com, no matter which browser I use, H265 support is not enabled and I couldn't find any article online that explains why -- what am I missing here? Source: 8 months ago

When I install Opera via flatpak and do html 5 test it says h264 is not supported, what can I do? Source: about 1 year ago

For people who like to watch with subtitles, VLC currently doesn't support streaming to chromecast with SRT subtitles.. There are several issues for it and I believe support is slated for the next major version of Chromecast, but not sure when that will be. The typical "workaround" is to reencode the video file to include the subtitles directly, but that sounded like too much work, so I hacked together a static... - Source: Hacker News / 5 months ago

Videojs is superior to basically everything. It's also open source... Source: about 1 year ago

Another option is looking at https://videojs.com/ with the Vimeo video file links. Source: about 1 year ago

I am woring with HTML - I managed to download a (m3u8) video. By inspecting the webpage (videojs.com). Source: over 1 year ago

Now, to display the HLS stream to viewers, we’ll use HLS.js, which we installed earlier. For more UI customizations, you can check out Video.js, which uses HLS.js internally. - Source: dev.to / over 1 year ago