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by 1_player 4098 days ago
Which hardware do you have? I'm on a Sandybridge Intel and I haven't managed to get satisfactory hardware acceleration on Arch + Firefox. Chromium manages to run any kind of video, including 60FPS 1080p without any lag, while on Firefox I get either audio or video lag. No idea why this happens.

I just tried h264ify and I don't notice any improvement on Firefox. Chrome CPU usage seems to be a little lower.

This is my go-to video test: https://www.youtube.com/watch?v=7SRTEXSpcyI

Chromium: I get around 140% CPU usage, spread on 3 processes, video smooth without dropped frames.

Firefox with MSE+HTML5 video: Goes from 30% to 170% CPU, on single process, but the video gets stuck for 3 seconds every second of play time. Totally unwatchable, unless I drop down to 30 fps.