If you need to revert the video to its original unedited state, you can usually do so within the iOS Photos app by selecting the video and tapping .
: Apps that process iPhone media (like specialized camera or editing apps) may use "FullSizeRender" as a default name for the final rendered output. FullSizeRender (2).mov
Are you trying to this file to a different format, or If you need to revert the video to
: Sending an edited video via AirDrop or email often triggers this automatic renaming. : When you edit a photo or video
: When you edit a photo or video in the iOS Photos app (such as cropping or applying filters) and then share or export it, Apple often renames the resulting file to "FullSizeRender".
: Services like Google Drive or NextCloud sometimes rename edited files to this during the upload process.