If you are looking for the technical specifications of this specific file, you can find them by:
If you saved a Live Photo as a video, it often adopts a timestamped name similar to this. 3. Contextual Content Video Dec 21, 10 09 54 AM.mp4
Right-click the file and select Get Info . Look under "More Info" for dimensions, codecs (usually H.264 or HEVC), and duration. If you are looking for the technical specifications
Since the filename "Video Dec 21, 10 09 54 AM.mp4" follows the default naming convention for or macOS screen recordings, here is how you can identify its "proper features": 1. Technical Metadata (The File's Features) codecs (usually H.264 or HEVC)