: This confirms the file is a standard digital video container. Potential Origins
: These are likely unique identifiers or hash-like strings used by an automated system to tag specific video segments or data batches. Chvq1 2x3.Zvb sp4.mp4
: Automated exports from multi-channel DVR systems often use this "Grid x Part" naming logic (e.g., 2x3 grid, part 4). : This confirms the file is a standard