Given the lack of context, could you please provide more details about what you're trying to accomplish or report? This would help in providing a more accurate and helpful response.
For now, here is a based on a plausible interpretation: “How to Verify an MP4 File (Like Model/Code ADN564) for Integrity and Authenticity” i adn564mp4 verified
No. Codecs are registered standards like avc1 , hev1 , mp4v . File extensions are .mp4 , .m4v , .m4a . adn564 appears to be an arbitrary identifier. Given the lack of context, could you please