Cover.mp4

It is a generic filename often used by artists or creators for a video cover of a song (e.g., "Misty Cover.mp4").

If you try to share the video before processing is finished, you are usually sharing the COVER.mp4 preview.

This is a 1080p, standard-quality video file. It is generated instantly so you can see what you captured, share it quickly, or check the framing without waiting for cloud processing. Cover.mp4

When you record a video with enabled on a compatible Google Pixel device, your phone doesn't just create one file. Instead, it creates a "dual-file" system to balance immediate usability with high-end processing:

Once the boosted version is ready, Google Photos downloads the final high-quality version and typically deletes the massive raw MAIN.mp4 to save space. It is a generic filename often used by

Users often find these files when manually backing up their phones or using third-party file managers. If you see a COVER.mp4 file and notice it looks lower quality than expected, it simply means the "Boost" hasn't finished processing or syncing yet.

Did you want to know more about this feature, or were you looking for a script to implement a background video named "cover.mp4" on a website? One of my favourite music quotes! | Nick Higgs The Singer It is generated instantly so you can see

This is a massive, unprocessed file (often 1GB for every 30 seconds of 4K footage). This file contains the high-dynamic-range data that Google's servers use to "boost" the video's lighting, stabilization, and color. How the Process Works: Upload: Google Photos uploads both files to the cloud. Processing: The "Boost" happens on Google's servers.