It is disappointing how in this day and age of images being so critical to consumers (and businesses) that so many .MOV files get corrupted. If as may .doc or .xls files went bad regularly businesses would fail all around. In any case, I have .mov files from various apps on the Mac and from Nikon and other cameras that played fine at different times in the past and then one day just would not open and ONLY play audio. That also suggests it is a consistent problem which someone somewhere in the industry needs to solve. I have several precious lifetime memories clips that are corrupted between 2007 and even now. Found this tools discussion very useful. Alas the Repair Tool crashes on Yosemite. I shared the crash report with the developer. My thanks to all who contribute to help each other.
Imran
IMRAN.TV
Imran
IMRAN.TV