: You can view codec information by pressing Ctrl+J while the file is open.
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. ATID-543.mp4
If you are looking for technical details about a specific file you have, you can check: : You can view codec information by pressing
: A free tool to see the file's technical data like resolution, bitrate, and codecs. ATID-543.mp4