Jh.mkv -

: Drag and drop Jh.mkv into the "Source files" window.

: In MKVToolNix , go to the Output tab, find "Splitting," and choose a mode (e.g., "split by parts" or "after output duration"). Jh.mkv

: Click on a track and use the "Properties" panel on the right to set it as the "Default track" so it plays automatically. : Drag and drop Jh