To provide a "solid feature" or detailed information, I'll need a bit more context on what you're looking for. Since this specific code doesn't appear in mainstream film or software databases, it generally refers to niche media content.
If you are looking for technical details about a specific file you have, you can check: ATID-543.mp4
: You can view codec information by pressing Ctrl+J while the file is open. To provide a "solid feature" or detailed information,
: A free tool to see the file's technical data like resolution, bitrate, and codecs. 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.