20211108-1_1080pmp4

: If you need to clip specific footage, free tools like Shotcut or DaVinci Resolve work well with this format.

: This often indicates the camera channel (Channel 1) or the first file segment of that day. 20211108-1_1080pmp4

Since this is an MP4 file, you can handle it using several common tools: : If you need to clip specific footage,