Closed Bug 1559488 Opened 5 years ago Closed 5 years ago

Video framerate is very low unless moving the window

Categories

(Core :: Graphics: WebRender, defect)

Product:
Core
Component:
Graphics: WebRender
Platform:
Unspecified
Windows 10
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1559284
Tracking Flags:
Tracking Status
firefox-esr60 --- unaffected
firefox67 --- unaffected
firefox68 --- unaffected
firefox69 --- verified

People

(Reporter: chutten, Unassigned)

References

(Regression)

Details

(Keywords: regression)

STR:

  1. Play a video (Seen on YouTube, Twitch, and Twitter's "GIF"s)
  2. Enjoy the slideshow (it plays at a very low framerate. Audio is smooth)
  3. Drag the window around a bit and enjoy the video at decent fps so long as you can keep the window moving.

Additionally, the framerate improves when in fullscreen mode.

I see the problem on Windows 10, but I wasn't able to reproduce in a new profile.

Here is a convenient link to some Twitter video clips that demonstrate the problem: https://twitter.com/i/moments/1139596326369239040

status-firefox68: --- → unaffected
status-firefox69: --- → affected
Keywords: regression, regressionwindow-wanted
Status: NEW → RESOLVED
Closed: 5 years ago
Resolution: --- → DUPLICATE
Component: Audio/Video: Playback → Graphics: WebRender
OS: Unspecified → Windows 10

I see the problem on Windows 10, but I wasn't able to reproduce in a new profile.

This bug being a WebRender regression explains why I couldn't reproduce it in a new profile (where I hadn't manually enabled the WebRender pref).

Has Regression Range: --- → yes
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