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Video playback stutter
Video playback stutters in Firefox and Firefox Nightly but not in an external player (mpv) or Edge. Hardware acceleration on/off makes no difference. Using the latest Radeon driver 22.11.2. Most noticeable during slow pan like this https://youtube.com/clip/Ugkx7jP_XuVB7i-O6ljGHQ_NjPmEakzvD7yM
The video playback stuttering isn't new but I only stated looking into it now. No idea how long it's been like this. At first I thought it might be caused by running my monitors at true 120Hz and 60Hz instead of a fractional framerate but then the stuttering should be visible on other apps too. Switching to a fractional 60 didn't change anything in Firefox.
Alle Antworten (7)
Is the stuttering throughout the video or a specific times of the video track? Also is Radeon driver the driver that is suppose to be for your hardware not downloaded drivers but the manufacture specific driver set.
Stutter seems random and advancing the video 1 frame at a time shows no missing or skipped frames. Like I said, in other players the playback doesn't stutter. Radeon drivers are from the Radeon website, not from Windows update or 3rd party sites.
So what kinda computer is it that you using? Just to see what other info others can find about it to know what drivers it loads.
CPU: Ryzen 7 5800X GPU: Radeon 6800 XT RAM: DDR4 32GB MOBO: B450 Tomahawk Max w/ latest BIOS (7C02v3F) OS: Windows 10 Home 22H2
Tried disabling all addons one at a time, used safe mode, refreshed the browser; none of these completely fixed the stutter though it did seem to lower the chance of it happening. Kind of makes it seem like the video player Firefox uses has such a low priority that even the slightest interruption makes video playback freak out. Move mouse cursor over the video, stutter. Subtitles change, stutter.
EDIT: Whenever I restart Firefox to try new settings, it takes anywhere from 5 to over 10 seconds before Firefox actually closes. Sure the window disappears when I click the X but literally nothing can be used during this shutoff time. I close Firefox and click Shutdown to turn off my PC but NOTHING happens until Firefox stops holding my PC as a hostage. But none of this is new, sometimes Firefox is the best browser, other times Edge is, occasionally Vivaldi is. I never stick to just 1 browser because of random bugs like this.
I should mention that setting layers.gpu-process.enabled to false fixes the super long FF shutdown time but then FF will occasionally crash when dragging a tab from the main window to another monitor.
I've seen similar problems, whenever I play both web video or local files. So not just http:// but also file://
Particularly whenever the CPU utilization is high enough >90%. This is not Firefox's CPU utilization, though as seen in the screenshots, CPU utilization when playing a video goes from 1% to 18 to 20%. The load roughly translate to 100% utilization on 3 threads, but spread out to 5 threads.
No such problems with standalone players or other browsers (Edge).
I've also faced such problem. I was start to noticing it during video playback up to 2.0x-4.0x of normal playback speed - it starts to drop video frames (every ~5 minutes it was dropping ~200 frames of playback in one single period at 1080p 60 fps)
I would recommend to try change setting in 'about:config' section. Try to change 'media.wmf.vp9.enabled' to 'false' (the default value for the setting is 'true' in FF 111.0.1)
It's completely fixed the problem for me. My laptop secs are AMD Ryzen 7 5800H, RTX 3070 8GB (TGP 130W), 16 GB ram