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Issue 877596 link

Starred by 1 user
Status: WontFix
Owner:
khushals...@chromium.org
Closed: Aug 24
Cc:
scroggo@chromium.org
█ mbarowsky+blinkimage@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 2
Type: Compat



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Animated GIF seems to take more CPU than necessary

Reported by term...@gmail.com, Aug 24 
UserAgent: Mozilla/5.0 (Windows NT 6.0; rv:52.0) Gecko/20100101 Firefox/52.0

Example URL:

Steps to reproduce the problem:
https://i.imgur.com/2R1yyrt.gif

What is the expected behavior?
I thought it would use less CPU since only a small part of the picture is changing. It's using like 15% on my notebook. Firefox is worse though it's using a collective 20%.

What went wrong?
.

Does it occur on multiple sites: N/A

Is it a problem with a plugin? N/A 

Did this work before? No 

Does this work in other browsers? N/A

Chrome version: 68.0.3440.106  Channel: stable
OS Version: 6.1
Flash Version:

Comment 1 by dtapu...@chromium.org, Aug 24

Components: Blink>Image

Comment 2 by chrishtr@chromium.org, Aug 24

Owner: khushals...@chromium.org
Status: Assigned (was: Unconfirmed)

Comment 3 by khushals...@chromium.org, Aug 24

Cc: scroggo@chromium.org
termsrv@, I'm not sure what you mean by "only a small part of the picture is changing".

Its a 1000X1914 sized image. Even if each frame only updates a small visible part in the image, the browser has no visibility into that and assumes the complete image has changed. So updates throughout the the pipeline assume the complete image is damaged.

Comment 4 by khushals...@chromium.org, Aug 24

Status: WontFix (was: Assigned)
I'm closing this for now, please reopen if I missed something in assessment above.

Comment 5 by term...@gmail.com, Aug 26 

Alright. Well maybe it should have some visibility into that. Many animated GIFs I would assume not the whole image is changing. Seems like a waste of CPU. Think of all the millions of hours of CPU you could save around the world. Maybe.
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