Actually MKV is a container format. Can TV support the MKV video really depends what is inside the file. For example, if that MKV with unsupported audio codec like DTS-HD or Dolby True HD, the TV won't play the sound. Besides, Bit rate, resolution, etc will have a large part to play in this. Don't expect a (Samsung) TV to playback a high bitrate .mkv. The solution for you is to find a third-party tool to make everything easy.
Here Dimo Video Converter Ultimate is one of the options. It's good because you can use it as a top video converter to first convert your MKV files and then play them on (Samsung) TV and also you can use it to share converted files to TV with built-in media server, with which you can get rid of the incompatibility issues quickly.
Finish the MKV to (Samsung) TV conversion task in a flash with NVIDIA CUDA support
Convert all kinds of MKV videos to TV most compatible format easily
Transcode your videos to portable devices, like Samsung tablet, Kindle Fire HD, iPad, iPhone.etc with professional profile
Create 3D videos for watching on 3D TV
One-click to share local videos to TV wirelessly
Make ISO from video folders for backup or playing
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