Reason 2: Another common issue is a frozen frame. In case the MOV file has a missing EOF or broken header, the file won't play. Reason 1: There could be a missing video component because of which you can't play it on QuickTime. Here are some of the reasons why MOV files won't play. This is the main reason why they are so susceptible to damage. What you need to know is that MOV files have complicated internal architecture. Possible Reasons behind the 'MOV File Not Playing' Issue Well, the sad part is that this issue happens quite a lot of time, and the good part is that we have come up with some solutions to fix this issue. And this, in the end, ruins your whole family time. No matter how much you try, you can't seem to figure out the real issue. You launch a video player, and suddenly you realize that the MOV file won't play! You might have even tried playing the video, but still, you can't play the MOV file.

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