You can use GSpot
or other codec identifier
in order to find out what codecs you need in order to play your media files.
Matroska Splitter provides support for Microsoft MPEG4 V3, MJPEG, ProRes, SNOW and various types of uncompressed video. Additionally, it supports the "A_OPUS" identifier, HEVC/H.265 and VP9.
The application has a “Load Embedded Fonts” option and an improved keyframe list building algorithm.
With Matroska Splitter, you can be sure that your MKV files or videos containing MKV streams are played properly and without any trouble.
How to install Matroska Splitter
If you are unable to install the filter, please read this small guide: How to install/uninstall DLL and AX codec files
This filter is necessary even if you don’t work with MKV files, because the Matroska container can be found in almost any format.