https://bugzilla.wikimedia.org/show_bug.cgi?id=23160

           Summary: Theora video thumbnails corrupt
           Product: Wikimedia
           Version: unspecified
          Platform: PC
        OS/Version: Windows Vista
            Status: NEW
          Severity: major
          Priority: Normal
         Component: General/Unknown
        AssignedTo: [email protected]
        ReportedBy: [email protected]


Created an attachment (id=7285)
 --> (https://bugzilla.wikimedia.org/attachment.cgi?id=7285)
Test_20100411_Vdubtestrgbcube4secs_ifps.ogv with empty thumbnail

Between 03:23, 8 April 2010 and 08:40, 9 April 2010 new video uploads started
to render with empty or corrupt thumbnails (Firefox, Google Chrome, Opera and
Safari, with cache and file purging; thumbtime also tested). New uploads are
still rendering incorrectly. I *believe* I have eliminated file corruption
because the file uploaded is identical to the file on my PC (I download the
file from mediawiki and use emacs to compare).

See
http://commons.wikimedia.org/wiki/Commons:Village_pump#Video_thumbnails_corrupt_since_9_April

Duplicated problem on skins: Monobook, Vector and Classic. Other skins not
tried.

How to replicate:

1: choose any small video from Category:Calibration videos at
http://commons.wikimedia.org/wiki/Category:Calibration_videos and download to
computer

2: upload same file with name prefixed with "Test_reupload_"; click the "ignore
warning and save anyway" button

3: see the corrupt or empty video thumbnail

Example attached from:
http://commons.wikimedia.org/wiki/File:Test_20100411_Vdubtestrgbcube4secs_ifps12fr12_q10.ogv

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