If any of the above issues are there, then the QT player may refuse to recognize its proprietary file format. File corruption or damage to the system files.Major compatibility issues with the codecs ( incorrect audio codecs).Here, we will shed some light on some of the most common causes behind this issue and a few of the remedies to get past this error.Ĭauses Behind the ‘ MOV File Not Playing’ Issue In addition to this, many users are looking for ways to repair corrupt AVI video files. Many QuickTime (QT) users are dealing with the ‘MOV file not playing’ issues and are looking for a solution to overcome this problem. Usually, MOV files commonly use the MEPG-4 codec for compression. I would appreciate any help.”Ī MOV file format is a standard multimedia file format developed by Apple and is compatible with both Mac and Windows. I suspect that this might have happened after I have updated to Maverick OS. For example, the duration of the video is 0:12, and it shows the first frame of the video for 12 seconds. It plays the first frame for the duration of the video. I tried playing the file using the VLC player it is responsive in comparison to the QT. QuickTime (QT) (QT) just shows the first frame and the duration of the video, i.e., 0:00. “ I recently discovered that my MOV files that were taken with my older iPhone are no longer playable.