User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0 Build ID: 20160607080223 Steps to reproduce: Watching some html5 videos in fullscreen mode (especially youtube) both vp9 and h.264 format. Intel broadwell graphics at Linux 4.6.2 and mesa 11.2.2. Actual results: The video has lag problems(sound still plays correctly) when the video is in fullscreen mode. Expected results: Video playing smoothly
Summary: fullscreen video html5 lag → HTML5 video playing with lag at fullscreen mode
I am able to reproduce this issue on Version 50.0a1 Build ID 20160621030208 User Agent Mozilla/5.0 (X11; Linux i686; rv:50.0) Gecko/20100101 Firefox/50.0 I observe lagging in regular mode too.
Component: Untriaged → Audio/Video: Playback
Product: Firefox → Core
Is this a regression? I've only found performance problematic on Atom-level CPUs and has started improving from 48. What CPU do you have? We use the CPU to decode/render on Linux. Setting layers.acceleration.force-enabled=true in about:config should improve performance but it is not without issues. See bug 594876. Accelerated layers on Linux is a work in progress.
3 years ago
I have i5-5200U, intel HD graphics 5500. I've reported this issue because before 47 release update i didn't expected lag problems on any html5 video.
Can you see if it is better in 48?
(In reply to Anthony Jones (:kentuckyfriedtakahe, :k17e) from comment #4) > Can you see if it is better in 48? When update 48 arrives I will report more feedback.
I have tried with Gnome under Wayland and the problem seems to disapear, maybe the problem is related with xf86-video-intel driver
(In reply to Jaume from comment #6) > I have tried with Gnome under Wayland and the problem seems to disapear, > maybe the problem is related with xf86-video-intel driver Perhaps. Is 48 any better?
(In reply to Anthony Jones (:kentuckyfriedtakahe, :k17e) from comment #7) > Perhaps. Is 48 any better? No, it is still lagging but I think it is a problem from the kernel and the X window driver.
3 years ago
Depends on: ogl-linux-beta
Priority: -- → P3
Status: UNCONFIRMED → RESOLVED
Closed: 2 months ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1210726
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