Is there an easy way to convert multiple mp3 files to video files at once? I could of course use a simple video editor, but I was thinking more of an app that would take multiple mp3 files, set the preferred album cover image as "video", and convert them one after another without having to do the same process for each mp3 file manually. I would like this to be an offline app (not a web app). Which video format should I use for this (I would like to keep as much sound quality as possible)?