hwdec=auto
If you specifically need HEVC support for players like Totem (the default GNOME player), you can install the For GStreamer applications: sudo apt install gstreamer1.0-libde265 Use code with caution. Copied to clipboard For VLC specifically (if needed): sudo apt install vlc-plugin-libde265 Use code with caution. Copied to clipboard install hevc codec for mkv video on linux mint link
often include their own internal codecs, system-wide support ensures compatibility across all applications. Quick Fix: Terminal Command hwdec=auto If you specifically need HEVC support for
Linux Mint Codecs Guide