877186 - Animated GIF pauses and skips frames

Status: RESOLVED DUPLICATE of bug 876332

(Core :: Graphics: ImageLib, defect)

Description

[Bram Speeckaert]

I noticed this GIF animates differently, at least since Nightly build 2013-05-25. It seems to pause and then skip ahead to catch up with the animation at specific points repeatedly. It works okay in other browsers, as well as Firefox 21.0.

Comment 1

[Bram Speeckaert]

Attachment: Faulty GIF

Comment 2

[Alice0775 White]

Regression window(m-c)
Good:
http://hg.mozilla.org/mozilla-central/rev/00b264c7cced
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130522 Firefox/24.0 ID:20130522092949
Bad:
http://hg.mozilla.org/mozilla-central/rev/8eebe35aae63
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130523 Firefox/24.0 ID:20130523044333
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=00b264c7cced&tochange=8eebe35aae63

Regression window(m-i)
Good:
http://hg.mozilla.org/integration/mozilla-inbound/rev/2a4461b9480b
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130522 Firefox/24.0 ID:20130522221332
Bad:
http://hg.mozilla.org/integration/mozilla-inbound/rev/aaa399729ff4
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130522 Firefox/24.0 ID:20130522221631
Pushlog:
http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=2a4461b9480b&tochange=aaa399729ff4

In local build
Last God: b0d4c7e61aed
First Bad: 9ac8495cf585
Regressed by
9ac8495cf585	Joe Drew — Bug 873505 - Set the animation frame's start time based on when we *wanted* to start, not when we actually did. r=seth

Comment 3

[Joe Drew (not getting mail)]

Luckily, this is fixed in bug 876332.