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Still no update on super-high CPU usage of Twitch on Firefox, an issue that has been open for at least 4 years [1][2]. I really want to like Firefox and I want

by cletus 6y ago

Still no update on super-high CPU usage of Twitch on Firefox, an issue that has been open for at least 4 years [1][2]. I really want to like Firefox and I want there to be viable alternatives to Chrome but when playing video back at 360p (not joking) grinds my 1.5 year old Macbook Pro to a halt on a popular website... I just can't use it. I don't know if this is a video codec issue, a CSS/JS issue that Twitch manages to trigger or what but it's a problem. [1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1403823 https://bugzilla.mozilla.org/show_bug.cgi?id=1403823 [2]: https://www.reddit.com/r/firefox/comments/917hyv/twitch_in_firefox_consumes_much_more_cpu_than/ https://www.reddit.com/r/firefox/comments/917hyv/twitch_in_f...

akvadrako 6y ago
Is it multi-user video chat? Firefox can't do this efficiently and it's also a problem with other tools like Jitsi.
- cletus 6y ago
  Well, that's worse because it's a bigger issue. If you look through some of the bugs (there are several) you'll see suggestions of turning off chat to mitigate the issue but this raises even more questions: 1. Why don't users have to do that with Chrome? 2. While it does help, the video-without-chat CPU+GPU usage is still higher than Chrome's CPU+GPU usage for video-with-chat. If that also applies to Youtube or other services and has been open for 4+ years then... yeah, big problem.
btdmaster 6y ago
Non-solution, but have you seen https://github.com/streamlink/streamlink-twitch-gui https://github.com/streamlink/streamlink-twitch-gui? It runs natively using streamlink, and streamlink can use e.g. mpv and use minimal CPU, instead using hardware acceleration (or not run whatever JavaScript Twitch decides to run, at least).
cpeterso 6y ago
A good way to get traction on a Firefox performance bug is to provide a profile. You don't need to install any new software. Instructions for recording a Firefox performance profile: https://profiler.firefox.com/ https://profiler.firefox.com/
m_eiman 6y ago
Isn’t this something that Twitch could/should fix?
eska 6y ago
Workaround, but I use mpv with youtube-dl. Offers rewinding, pausing (buffering for minutes), frame-by-frame stepping, slow motion.. You can just type `mpv http://twitch.tv/user_name http://twitch.tv/user_name`

by cletus 6y ago

akvadrako 6y ago

Is it multi-user video chat? Firefox can't do this efficiently and it's also a problem with other tools like Jitsi.

cletus 6y ago
Well, that's worse because it's a bigger issue. If you look through some of the bugs (there are several) you'll see suggestions of turning off chat to mitigate the issue but this raises even more questions: 1. Why don't users have to do that with Chrome? 2. While it does help, the video-without-chat CPU+GPU usage is still higher than Chrome's CPU+GPU usage for video-with-chat. If that also applies to Youtube or other services and has been open for 4+ years then... yeah, big problem.

btdmaster 6y ago

Non-solution, but have you seen https://github.com/streamlink/streamlink-twitch-gui https://github.com/streamlink/streamlink-twitch-gui? It runs natively using streamlink, and streamlink can use e.g. mpv and use minimal CPU, instead using hardware acceleration (or not run whatever JavaScript Twitch decides to run, at least).

cpeterso 6y ago

A good way to get traction on a Firefox performance bug is to provide a profile. You don't need to install any new software. Instructions for recording a Firefox performance profile: https://profiler.firefox.com/ https://profiler.firefox.com/

m_eiman 6y ago

Isn’t this something that Twitch could/should fix?

eska 6y ago

Workaround, but I use mpv with youtube-dl. Offers rewinding, pausing (buffering for minutes), frame-by-frame stepping, slow motion.. You can just type `mpv http://twitch.tv/user_name http://twitch.tv/user_name`