Beware

As soon as the app opens, a warning window pops up telling us to make backups of our video files as MetaMovie may corrupt the file and leave it un-playable. MetaMovie corrupted the very first mp4 video file I attempted to add a subtitle track to, and that has made me very wary about continuing to use the app or even attempting other files. Heed it’s warning. Make copies of your files before you use it.

aguamaned about MetaMovie