Although MOV is highly compatible with Mac OS X, some MOV files simply cannot be opened in QuickTime, or there is only sound but no picture, such as MOV footage from the JVC GY-HM100. Additionally, some specific MOV files cannot be streamed to Apple TV. This is quite frustrating, and what you need is to convert the MOV file to another format like MP4 for smooth playback—whether it's on your Mac or on digital players like the PSP.