I'm not sure, if the developer know, that this problem is still present?!
Some mp4 videos have been copied onto the iPod already a year ago using iTunes. The "covers" which are seen on the iPod seems to be taken from the first picture from the movie itself.
As soon I use the MediaMonkey on my iPod (classic) the following happens: the cover art of all music files are as wanted
If I use the MediaMonkeys function to reorganize the database all video covers get mixed up and can only be restored using the iTunes (disabling and then reenabling cover art) which takes quite a long time...
Michael