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MPEG-4 video file format
File type: Digital video and movie file
Files with mp4;v=1 file extension is related to the MPEG-4 video file format used to store audio and video data.
File type category:
Digital video and movie file
Date updated: July 13, 2025
The mp4;v=1 file extension is sometimes used for MPEG-4 multimedia file format, that typically uses mp4. Probably generated by some program for specific reasons.
The MPEG-4 file format, as defined by the MPEG-4 specification, contains MPEG-4 encoded video and Advanced Audio Coding (AAC)-encoded audio content.
Most likely can be played back using any standard media player, you may just need to rename the extension.
It should be possible to convert this file type much like standard MP4.
Apps designed for playing mp4;v=1 files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
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