Install Hevc Codec For Mkv Video On Linux Mint Link Info
Sometimes, installing the codec isn't enough. If you are playing a high-resolution HEVC file (like a 4K MKV movie) on older hardware, the video might play slowly or choppy because the CPU is doing all the work. You need hardware acceleration.
If you still experience stuttering on a 4K MKV movie, your CPU is struggling with software decoding. You need to the HEVC codec to your GPU’s hardware decoder. Linux Mint supports this via VA-API (Video Acceleration API) . install hevc codec for mkv video on linux mint link