I have a Sony video camcorder filming in mp4 format. My camcorder ran out of battery and the video file was only partially saved, but the file cannot be opened using Quicktime. All I got was the following message. "To see if additional software is available that will enable QuickTime Player to open the movie, click Tell Me More." Anyone has any idea how to recover such file?
Quicktime, OS X Yosemite (10.10.5)