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Solved]QuickTime Doesn't Open/Play an .MP4 file
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mp4 files don't work on Quicktime Player without yuv480p chroma subsampling · Issue #29476 · ytdl-org/youtube-dl · GitHub
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![Fixed] QuickTime Player Can't Open MP4 on Mac and Windows](https://videoconvert.minitool.com/images/uploads/articles/2021/04/fix-quicktime-player-cant-open-mp4/fix-quicktime-player-cant-open-mp4-thumbnail.png "Fixed] QuickTime Player Can't Open MP4 on Mac and Windows")
Fixed] QuickTime Player Can't Open MP4 on Mac and Windows
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Solved] QuickTime player can't open MP4 on Mac
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