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Youtube and other sites using HTML5 Video are lagging and looping

RESOLVED INCOMPLETE

Status

()

Core
Audio/Video: Playback
RESOLVED INCOMPLETE
2 years ago
a year ago

People

(Reporter: John, Unassigned)

Tracking

44 Branch
x86_64
Windows 10
Points:
---

Firefox Tracking Flags

(Not tracked)

Details

(Reporter)

Description

2 years ago
User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0
Build ID: 20160123151951

Steps to reproduce:

1. Watch any videos on Youtube or Facebook. Take this one as a test: https://www.youtube.com/watch?v=-YGDyPAwQz0 or this https://www.facebook.com/afvkids/videos/1096171280441507/
2. (Youtube) Click on the gear icon and change the quality to 480p or 360p or 240p


Actual results:

The video are lagging and jumping (or whatever it called). It does not happen when i change the quality to 720p, 1080p and above.

Please watch this video: https://www.youtube.com/watch?v=yODsfAxZYQs


Expected results:

Smooth playback on lower quality below 480p
(Reporter)

Updated

2 years ago
OS: Unspecified → Windows 10
Hardware: Unspecified → x86_64
(Reporter)

Comment 1

2 years ago
This bug was started after 41 update. It is happen on any computers. 

If you are unable to reproduce the bug, please run a PC games, such as World Of Warcraft. let it running in the background and try reproduce the bug again.

It is NOT a graphic card or driver's problem because it is not happen on any browsers. no matter how much GPU usages, the playback is still smooth. I don't want to disable the hardware acceleration because it will just slow down browsing

Updated

2 years ago
Component: Untriaged → Audio/Video: Playback
Product: Firefox → Core
(Reporter)

Comment 2

2 years ago
Anyone can reproduce this issue?
(Reporter)

Updated

2 years ago
Summary: Youtube and other sites using HTML5 Video are lagging and jumping → Youtube and other sites using HTML5 Video are lagging and looping
Is it reproducible in nightly?
Much perf is better in nightly 49.
Status: UNCONFIRMED → RESOLVED
Last Resolved: a year ago
Resolution: --- → INCOMPLETE
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