If you experience no sound when playing MKV video files in Movies & TV app on Windows 11/10, then maybe the codecs may be missing.

Starting today, Windows 8.1 will now natively support the Matroska Multimedia Container (MKV) file format with the built-in video app.

MKV is an open-source container format that’s useful for storing multiple files using multiple encoding types; many of us use the format when downloading and storing films and TV shows.