so i record from bandicam for minecraft and it has worked great until i went on vacation and when i got back it wouldn't import my footage. i record these videos for my channel and i really want this fixed asap
If you didn't specifically install any codec packs like "K-Lite" then you probably don't have any unless some other piece of software installed them without you knowing it. You might want to double-check the installed programs and see if something like "K-Lite" is installed but I don't even know if those packages register themselves properly with Windows.
Danny Hays said that he installed Bandicam and recorded in Motion-JPEG and imported it into Vegas Pro without a problem. He even gave a link in this post. So it's not Vegas Pro or Bandicam.
Bottom line: It's something to do with your computer. Probably some other software package that's causing it not to work. It would be very difficult for us to guess.