https://bugzilla.wikimedia.org/show_bug.cgi?id=31850

--- Comment #4 from Brion Vibber <[email protected]> 2011-10-21 01:14:44 UTC 
---
ffmpeg 0.7.2 on Ubuntu 11.10 gives:

Input #0, ogg, from 'long.ogv':
  Duration: 00:25:28.26, start: 0.000000, bitrate: 5019 kb/s
    Stream #0.0: Data: skeleton
    Stream #0.1: Video: theora, yuv420p, 1920x1088, 30 fps, 30 tbr, 30 tbn, 30
tbc
    Stream #0.2: Audio: vorbis, 44100 Hz, stereo, s16, 499 kb/s
    Metadata:
      ENCODER         : ffmpeg2theora-0.25
      SOURCE_OSHASH   : 5fb6cf8e3ec983d6

So that mysterious 'invalid' stuff on stream 0.0 looks like a perfectly legit
metadata skeleton.

Importing the two .ogv files into my local trunk install with OggHandler
enabled... they come in, but both end up with bogus metadata reported:

Med.ogv‎ (Invalid ogg file: Cannot decode Ogg file: Invalid page at offset
549624967) 
Longer.ogv‎ (Invalid ogg file: Cannot decode Ogg file: Invalid page at offset
1088569774) 

These are the same offsets that are shown on the live file pages, so common
code in our metadata extraction must be hitting them.

It's possible that it's a bug in our code; it's also possible that both files
are in fact corrupt, but can be played back by skipping over the bad frames or
such.

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