If "proper feature" refers to what is happening in the video, the timestamp suggests it may be related to:
Open the video in the Photos app , swipe up, and you will see the resolution, frame rate (fps), and file size. 2. "Feature" as a Software Function
In many years, December 21 is the Winter Solstice; the video might feature specific lighting or astronomical events related to the shortest day of the year. 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.
Right-click, select Properties , and go to the Details tab. If "proper feature" refers to what is happening
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)
If you are asking about a specific software feature that generated this video: Right-click the file and select Get Info
If you are looking for the technical specifications of this specific file, you can find them by: