Perhaps elaborate about the origin of these MOV files. Often if even VLC won't play a file, then the file is not a valid media file.
To open a video or audio file in the QuickTime Player app on your Mac, do any of the following: Double-click the file in the Finder. If your videos or audio files are in iCloud Drive, click iCloud Drive in the Finder sidebar, then double-click your file. See Use iCloud Drive to store documents on your Mac. QuickTime Player default file extension associations The most common file format used with the specific file extension.mp4 file extension is used for MPEG-4 video file format. Other file extensions or file formats developed for use with QuickTime Player.al.m15.m75.mjpeg.mjpg.qpa.qtv. Common file extensions used by QuickTime Player.h264.mp4.mpeg.
A tool like MediaInfo will try to look inside the media file to inform the user on the media details (meta data), such as video codec and audio codec, which are important factors in playback compatibility.
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Jun 21, 2018 4:56 AM