The "auto-resume" feature of MC is called "Bookmarking". There are lots of ways that you can enable/disable Bookmarking on video files (or groups of files) based on the tags that you apply. Search the forum for Bookmarking and you should find a whole wealth of information.
The main tag you want to look at is the [Use Bookmarking] tag. When set to the default setting, then MC decides whether to use Bookmarking based on mainly the [Media Sub Type] tag.