If "proper feature" refers to what is happening in the video, the timestamp suggests it may be related to:
If you are looking for the technical specifications of this specific file, you can find them by: Video Dec 21, 10 09 54 AM.mp4
If you are asking about a specific software feature that generated this video: If "proper feature" refers to what is happening
Recordings of school plays, gift exchanges, or winter activities. Video Dec 21, 10 09 54 AM.mp4
This naming format is the default for the iOS Control Center screen recording tool.