Closed Bug 824234 Opened 12 years ago Closed 9 years ago

High CPU usage with h.264 video

Categories

(Core :: Audio/Video, defect)

Product:
Core
Component:
Audio/Video
Platform:
x86
Windows 7
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
VERIFIED INCOMPLETE

People

(Reporter: spammaaja, Unassigned)

References

Details

High CPU usage (like 50-70%) with h.264, especially high resolution video.

VLC only uses about 9% with hardware acceleration enabled and about 35% with HWA disabled.
Blocks: 799315
My CPU usage only increased by about 8% when I tried to reproduce this. Could you give an example video?
Video recorded with FRAPS and h.264'ed with x264 --level 4.1 --preset fast --qp 20 --b-pyramid none --ref 3 --weightp 2 --qpmin 10 --qpmax 51 --no-mbtree.
Could it be similar to bug 823168 ?
(In reply to MrX1980 from comment #3)
> Could it be similar to bug 823168 ?

That makes the browser completely unresponsive. In this bug the browser is completely responsive.

I think the issue is that Firefox doesn't enable GPU decoding and uses a multithreaded CPU decoder instead.
Do you still see the problem with an up-to-date night build?

What are the specs of your computer system?
Status: UNCONFIRMED → RESOLVED
Closed: 9 years ago
Resolution: --- → INCOMPLETE
Flags: needinfo?(spammaaja)
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