totem-video-thumbnailer fails on some file

[Laurent Bonnaud]

With the attached file, totem-video-thumbnailer fails to produce a thumbnail:

$ totem-video-thumbnailer -v orange.mpg orange.png
[...]
TotemVideoThumbnailer-Message: About to get frame for iter 3

** (totem-video-thumbnailer:20707): WARNING **: Could not take screenshot: failed to retrieve or convert video frame
TotemVideoThumbnailer-Message: Frame for iter 3 was not interesting
TotemVideoThumbnailer-Message: About to seek to 0,500000
TotemVideoThumbnailer-Message: About to get frame for iter 4

** (totem-video-thumbnailer:20707): WARNING **: Could not take screenshot: failed to retrieve or convert video frame
TotemVideoThumbnailer-Message: Frame for iter 4 was not interesting
totem-video-thumbnailer couldn't get a picture from 'orange.mpg'

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: totem 3.8.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6
Uname: Linux 3.11.0-13-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
Date: Sat Nov 9 15:31:51 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-04-27 (195 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: totem
UpgradeStatus: Upgraded to saucy on 2013-10-01 (39 days ago)