: Open the file in VLC Media Player and go to Tools > Codec Information to see if the container is truly MKV or MP4. 2. Converting or Remuxing
The gold standard for web, mobile, and hardware compatibility. ba3162e2sdede.mkv.mp4
Best for PC use and archival; less compatible with some TVs/phones. : Open the file in VLC Media Player
The file name ba3162e2sdede.mkv.mp4 suggests it may have been renamed incorrectly or is a remnant of a partial conversion. ba3162e2sdede.mkv.mp4
If you are trying to multiple files into one long piece, tools like Flixier or HandBrake can merge MKV and MP4 videos into a single sequence.