Try opening it with , as it is much better at playing "broken" files than standard Windows or Mac players. Use a Video Repair Tool

Get into the habit of hitting Ctrl+S (Windows) or Cmd+S (Mac) frequently.

If you are looking for these files to delete them (to save space) or to find a lost recording, they are usually buried in cache folders:

C:\Users\[YourUser]\AppData\Local\CapCut\User Data\Projects\com.lveditor.draft\

Ensure your editor is updated to the latest version to reduce the frequency of "autosave" emergency files.

If you need the footage inside this file, follow these steps in order: Right-click the file and select Rename .

These tools usually ask for a "reference file." Provide another healthy MP4 file recorded with the same settings or camera so the tool can copy the missing metadata structure. Import back into the Original App

This is an . Unlike a standard MP4 that you can just click and play, an .autosave.mp4 often lacks the "moov atom" (the metadata at the end of the file that tells a media player how to read the video). Because the program crashed before finishing the file, your computer usually sees it as corrupted or unreadable. How to Recover the Video