[Webkit-unassigned] [Bug 6950] New: Animated gifs sent with "Content-type: image/jpeg" don't animate

[bugzilla-daemon at opendarwin.org]

http://bugzilla.opendarwin.org/show_bug.cgi?id=6950

           Summary: Animated gifs sent with "Content-type: image/jpeg" don't
                    animate
           Product: WebKit
           Version: 420+ (nightly)
          Platform: Macintosh
               URL: http://www.dragondata.com/~toasty/safaritest.html
        OS/Version: Mac OS X 10.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at opendarwin.org
        ReportedBy: toasty at dragondata.com


This bug has also been filed as Radar # 4126816

With the release of 10.4, we started getting complaints from Safari users that
our animated GIFs weren't animating with certain pictures. Some digging turned
up that some users were submitting animated GIFs with a "jpg" extension, so the
web server was sending "Content-type: image/jpeg" instead of image/gif. The
image still displays correctly, but never leaves the first frame.

While I realize it's technically wrong for a GIF to be sent as a jpeg, IE,
Firefox, Opera and every other browser(even Safari 1.xx) I could find would
still animate GIFs when sent as a jpeg.

It's not critical, a workaround for us was to send all images (jpeg or gif) as
"image/gif" for Safari, and it's happy. However, I'm guessing this is affecting
others too. I've noticed it personally on Livejournal.com with animated icons.


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