This is a standard MPEG-4 video container. It is widely used because it provides high-quality video with relatively small file sizes, making it the go-to format for everything from social media clips to professional archives.
The -1pon tag is less standard but often refers to one of the following: 091522_001-1pon.mp4
In some systems, a "1" or "-1" suffix is automatically added when a file is a duplicate or a slightly modified version of an original. This is a standard MPEG-4 video container
Are you trying to track down the origin of this specific file, or Are you trying to track down the origin
This denotes the first file or take in a series captured on that specific date. In a high-volume environment—like a drone flight, a dashcam, or a film set—this ensures each individual clip remains unique even if multiple recordings are made in a single session. 3. The Suffix: -1pon
In specific media workflows, "pon" may be an internal shorthand for a specific camera angle, a "point of note," or a technical setting. 4. The Format: .mp4