Sometimes generated thumbnails of videos are completely destroyed.
Examles: http://commons.wikimedia.org/wiki/File:Parus_major,_Germany_2009.ogv
http://commons.wikimedia.org/wiki/File:Copia_llave_video.ogv
Version: unspecified
Severity: normal
Sometimes generated thumbnails of videos are completely destroyed.
Examles: http://commons.wikimedia.org/wiki/File:Parus_major,_Germany_2009.ogv
http://commons.wikimedia.org/wiki/File:Copia_llave_video.ogv
Version: unspecified
Severity: normal