1236107 - 60fps videos choppy due to 100% CPU usage

Status: RESOLVED DUPLICATE of bug 1236112

(Core :: Audio/Video: Playback, defect)

Description

[Steve.hack]

User Agent: Mozilla/5.0 (Linux; Android 6.0.1; Nexus 7 Build/MMB29K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.83 Safari/537.36

Steps to reproduce:

Watch any 720p or 1080p video at 60fps on YouTube.


Actual results:

CPU shoots to 100% usage and the video becomes choppy.


Expected results:

CPU usage should be much lower and the video should be smooth. In comparison playing the same video in Edge results in 20 - 50% CPU usage and 100% smooth playback.

PS: The same issue affects GFycat as well at 60fps, but once again Edge runs them perfectly.

Comment 1

[Steve.hack]

I posted from my Nexus 7 but the issue is on my Yoga 2 10" Windows 10 tablet.

Comment 2

[Chris Peterson [:cpeterson]]

Steve, thanks for reporting this problem. On which Firefox version do you see 100% CPU usage? Is this a new problem?

Can you please copy/paste your Firefox Troubleshooting Information from about:support into this bug?

https://support.mozilla.org/en-US/kb/use-troubleshooting-information-page-fix-firefox

Comment 3

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

Can you also look at YouTube's stats for Nerds (available from right-click menu) and tell us the codec that is being used.

Comment 4

[Giova]

Same for me. It happened with version 42 but fixed in 43. Now the problem is back with version 44.

In about:support i see this:

(# 0) Error Too many dropped / corrupted frames, disabling DXVA

(# 1) Error Too many dropped / corrupted frames, disabling DXVA

Comment 5

[Giova]

(In reply to giovanninolol from comment #4)
> Same for me. It happened with version 42 but fixed in 43. Now the problem is
> back with version 44.
> 
> In about:support i see this:
> 
> (# 0) Error Too many dropped / corrupted frames, disabling DXVA
> 
> (# 1) Error Too many dropped / corrupted frames, disabling DXVA

p.s I have Windows 7 Pro