Nightly dropping 5% of all frames (SD, HD, or UHD) on any YouTube.com video.
Categories
(Core :: Audio/Video: Playback, defect)
Tracking
()
People
(Reporter: nycitykpop, Unassigned)
Details
Attachments
(2 files)
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Steps to reproduce:
Update Nightly.
Go to any YouTube.com video then click play.
Actual results:
YouTube videos play but lose 5% of frames on playback.
Expected results:
Youtube videos generally should not be dropping frames unless adverse conditions i.e network connectivity loss etc... They especially should not be dropping frames on low-definition videos ie 720p 480p 360p.
NOTE: This could be related to the work in progress on bug 1692881
Losing 5% of frames on ABCNews Prime 720p video
See SD video ABCNews Prime on YouTube:
https://www.youtube.com/watch?v=CrunHQq4dPg
I remember when in previous versions of Firefox I could watch YouTube Videos with 0 dropped frames (or on average less than 1%).
I mean 5% is not a big deal, even so, It may need to be looked at what is causing this problem.
Comment 4•3 years ago
|
||
The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.
Comment 5•3 years ago
|
||
Would you mind to use Firefox profiler with media preset to profile the issue?
Thank you.
Sorry I had an email account issue and had to change my email account. The issue has been resolved and I am now able to continue.
In response to the previous comment:
Ok. How do I do that?
Video used for Firefox Media Profiler Entry. Shows approx 5% of all frames dropping.
Comment on attachment 9220948 [details]
Screenshot_2021-05-08_10-21-37_Firefox_Media_Profiler_video.png
Reporter | ||
Comment 10•3 years ago
|
||
The above video is set to 4K @ 60fps on my machine. (My graphics card can't handle 8K @ 60fps. My limit seems to be 8K @30fps).
Comment 11•3 years ago
|
||
Hi Jeffrey,
I am not able to open the link you provided. Would you mind capturing the profile again? Here is the tutorial: https://profiler.firefox.com/docs/#/./guide-ui-tour. Thanks!
Reporter | ||
Comment 12•3 years ago
|
||
I tried to capture the profile but it was too big. I will try again with a smaller snippet of video.
Reporter | ||
Comment 13•3 years ago
|
||
Ok. Here is the permalink for the profile:
Reporter | ||
Comment 14•3 years ago
|
||
I don't think my GPU is being utilized at all in the playing of Youtube Videos, even though I have the about:config vaapi hardware acceleration settings enabled.
Reporter | ||
Comment 15•3 years ago
|
||
MPV (Celluloid) Player is using my VAAPI Hardware Decoder for playing the same video at less than 3% CPU usage compared to 300% in Firefox Nightly.
Reporter | ||
Comment 16•3 years ago
|
||
I am using the Linux command line HTOP and GLANCES programs.
Reporter | ||
Comment 17•3 years ago
|
||
I estimated in Htop 200% = a single physical core on my AMD Ryzen 7 4800H Processor.
In Htop Nightly is using 300% to play the above video and MPV is using approx 15% (on the fully downloaded version - 4K60fps).
Description
•