How do I fix MP4 files that won't play in VLC?

VLC is a popular media player known for its compatibility with various file formats, including MP4. If you encounter MP4 files that won't play in VLC, there are a few potential solutions you can try. Firstly, ensure that you have the latest version of VLC installed. If the issue persists, the problem might lie with the file itself. Attempt to play the problematic MP4 file on another media player or try converting it to a different format using a reliable video converter. If all else fails, seeking assistance from online forums or VLC support communities could provide further guidance.

To do this:

  • Open VLC and click Tools -> Preferences.
  • Click Video, and then check Enable video and Window decorations if not clicked already.
  • Click the drop down menu of Output and choose X11 Video Output (XCB).
  • Then, save your settings and restart VLC. Import your MP4 video and see if it can play or not now.