Atid-543.mp4 -

Based on common cataloging conventions for digital media, is likely a product code for a video title within a specific genre of Japanese entertainment. These codes are typically used to identify specific releases from production labels.

If you are looking for technical details about a specific file you have, you can check: ATID-543.mp4

: A free tool to see the file's technical data like resolution, bitrate, and codecs. Based on common cataloging conventions for digital media,