Some .ogg files don't have thumbnails.
The following error message occurs:
Error creating thumbnail: oggThumb failed to create the thumbnail.
[ Steps to reproduce bugs ]
- Go to [[Commons:File:200908281027-Jack Herrick-Lessons from wikiHow.ogg]]
- Go to the thumbnail URL (e.g. right click > view image) - https://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/200908281027-Jack_Herrick-Lessons_from_wikiHow.ogg/mid-200908281027-Jack_Herrick-Lessons_from_wikiHow.ogg.jpg
[ Side note ]
On Wikimedia Commons, the following tech log entry is pointed as related to this bug:
"* 00:34 paravoid: upgrading oggvideotools to 0.8a on all imagescalers, fixing regression on the lucid->precise upgrade"