Shor.mkv.mp4: 06.

: Right-click the file and select Properties to see the "Type of file".

For high-quality conversion or reducing file size, Handbrake is a standard choice. : Select the MKV file. Output : Choose MP4 from the Format menu. 06. Shor.mkv.mp4

: If it is actually an MKV but named .mp4 , you can try renaming it by deleting the extra extension. Ensure "File name extensions" is checked in your File Explorer View settings to see the true extension. 🔄 Converting MKV to MP4 : Right-click the file and select Properties to