Right-click the file and remove the unnecessary .mkv part so it simply ends in .mp4 .
If the file won't open, it may be corrupted or a "fake" file (common with oddly named downloads). Right-click the file, select Properties , and check if the file size matches what you expect for a video. 3. Fixing the Extension IPX-550.mkv.mp4
If you tell me you're trying to play this on or what error message you're seeing, I can give you more specific troubleshooting steps. Right-click the file and remove the unnecessary
A flexible container that can hold unlimited video, audio, and subtitle tracks in one file. To clean up the name and ensure it
To clean up the name and ensure it works with standard devices (like a Smart TV or tablet):
Click Start Encode to create a clean, single-extension version.