QuickTime Player / iMovie / Ubuntu / Mac
Hello, I have a problem with QuickTime Player and iMovie. I made a Screencast in Ubuntu, extension is .mp4 and now I'm trying to edit it using iMovie. The problem is when I open it in iMovie, I see a black video without any sound. I tried to open it also in QuickTime Player and an error appears on the screen "The file isn’t compatible with QuickTime Player.".
What should I do to fix this problem?
MacBook Pro with Retina display, macOS Sierra (10.12.5)