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: 00001e60.autosave.mp4
If you need the footage inside this file, follow these steps in order: Right-click the file and select Rename . Get into the habit of hitting Ctrl+S (Windows)
Ensure your editor is updated to the latest version to reduce the frequency of "autosave" emergency files. 00001e60.autosave.mp4
If renaming doesn't work, the file header is likely missing. You can use free tools like Untrunc or Fix.video .