Rct-721.mp4

(e.g., Is it security footage, a project file, or a corrupted file?)

If the file is corrupted, tools like VLC's repair feature or specialized software can often fix corrupted MP4 headers [4]. RCT-721.mp4

Use ExifTool or ffmpeg to view or edit the creation date, camera model, or file information embedded in the MP4 file. Is it security footage

A clip from a media project, training video, or specific video library. a project file

Use LosslessCut to trim, cut, or merge segments of the MP4 without re-encoding, preserving quality [3].

A recording from a specific surveillance or security camera (e.g., "RCT" standing for Room Camera/Recording Tech).