934507 - GIF animation stops after src changed several times

Status: NEW

(Core :: Graphics: ImageLib, defect)

Description

[V@no]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0 (Beta/Release)
Build ID: 20130910160258

Steps to reproduce:

1) Append a random query to src of an animated .gif image (to avoid caching)
2) Let it load
3) repeat step 1

You can test it on this page by pressing reload button:
http://vano.org/giftest


Actual results:

After same image loaded several times the animation stops


Expected results:

Animation should never stop.

Comment 1

[Josh Matthews [:jdm]]

Confirmed on Linux nightly.

Comment 2

[Timothy Nikkel (:tnikkel)]

I can't reproduce. Does this still happen?

Comment 3

[Jamtlu]

I have a similar problem with SVG images. https://bugzilla.mozilla.org/show_bug.cgi?id=934507

Comment 4

[Jamtlu]

This bug has been hanging around since 2013 and is still marked as "new"? This issue should be merged with my new bug. Opened URL, confirmed on Firefox 39.0 (Mac OS X).

Comment 5

[u279076]

(In reply to Jamtlu from comment #4)
> This bug has been hanging around since 2013 and is still marked as "new"?
> This issue should be merged with my new bug. Opened URL, confirmed on
> Firefox 39.0 (Mac OS X).

What is your new bug number? If it's the same issue it should be marked as a duplicate of this one. The bug number you mentioned in comment 3 is the number of *this* bug, not your new bug.

Comment 6

[V@no]

(In reply to Anthony Hughes (:ashughes) [GFX][QA][Mentor] from comment #5)
> (In reply to Jamtlu from comment #4)
> > This bug has been hanging around since 2013 and is still marked as "new"?
> > This issue should be merged with my new bug. Opened URL, confirmed on
> > Firefox 39.0 (Mac OS X).
> 
> What is your new bug number? If it's the same issue it should be marked as a
> duplicate of this one. The bug number you mentioned in comment 3 is the
> number of *this* bug, not your new bug.
Bug #1184530

Comment 7

[byzod]

Attachment: Gif_Src_Change_Test.zip (1 html and 3 gif files, extract to test)

Still reproducible on 54.0a2
  UA: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0
  Built from: https://hg.mozilla.org/releases/mozilla-aurora/rev/94b7e538af7dbb9a6567cad9125c2f5411e7fb80

[1] Gif image freeze after 2 changes of `src` attribute.
[2] Remove attribute `src` then set a new one seems fix the freeze.
[3] The 2-reload-before-freeze counter is not affected by rebuild (action [2]). 1 reload + 7 rebuild + 1 reload = freeze; + 5 rebuild + 1 reload = still freeze.
[4] <img> blink when rebuild too fast, but looks stable when reload.

Is this bug a dupe of bug #762786?

Comment 8

[byzod]

Attachment: screencast_blink.gif

Screencast for attachment # 8865833 [details]
Showing <img> blinking when click Rebuild button too fast