Vid_20221215_105814_430.mp4.mkv -

MKV files can store rich metadata that MP4s cannot, such as "Writing Application" (e.g., mkvmerge v70.0.0 ) or "Writing Library" (e.g., libebml ). This reveals which software handled the file after it left the phone.

Use the command ffprobe -show_packets VID_20221215_105814_430.mp4.mkv to see if there are any dropped frames or timestamp gaps, which indicate the "health" of the video stream. VID_20221215_105814_430.mp4.mkv

A true MKV file must start with the EBML header 1A 45 DF A3 . If the file fails to play, checking this header confirms if it's a genuine MKV or just a renamed MP4. 3. Practical Deep Inspection Steps MKV files can store rich metadata that MP4s