i was sent a mp4 and a m4v wetransfer video. After trying to open, my Macbook Air said "the file format isn't recognized". How do I resolve?
I was sent a mp4 and m4v weTransfer video file. After trying to open, my Macbook Air said, "the file format isn't recognized". How do I resolve?
MacBook Air, Mac OS X (10.7.5)