: An advanced command-line utility used to read and write metadata for many file types, including MP4.

For a "deep" look into the file's structure or potential corruption, technical users often use these tools:

Go to the tab to view the video codec, frame height/width, and bit rate. macOS : Right-click the file and select Get Info .

: Beyond just playing the file, you can go to Tools > Codec Information to see its internal specs.

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