A quick way to view the codecs used (e.g., H.264, HEVC) and the resolution, which can provide clues about the source of the video. Possible Origins
This is the primary software suite for inspecting and editing MKV files . Use the Header Editor to see if the file has an internal "Title" or "Track Name" that differs from the alphanumeric filename. AgADOQgAArdTsFY.mkv
MKV files can store extensive tagging information , including "Track Names," "Titles," and "Chapters". A quick way to view the codecs used (e
Because the filename itself does not contain descriptive metadata, a "write-up" for this specific file depends on its and the tools available to inspect its contents. Technical Profile: The MKV Container MKV files can store extensive tagging information ,
The filename appears to be a system-generated or randomly encoded name, likely originating from a platform that uses unique alphanumeric strings for file identification (such as WhatsApp, Telegram, or various cloud storage services).
Filenames starting with "AgAD" are frequently associated with , where media files sent through the app are assigned unique strings before being cached or downloaded. If you found this in a downloads folder, it is highly likely a video shared via a messaging app. Suggestions for MKV files - ExifTool by Phil Harvey