In the Destination file section (located at the bottom), you can see and change the location on your computer where MKVToolNix will save the new MKV video file. Select the MKV video file and subtitle file(s) (.srt. Within this window, you go to the location on your computer where the MKV video and subtitle file(s) are.Ħ. Click on the + Add source files button located at the bottom.ĥ. Make sure that the subtitle file has the same filename as the MKV video file.Ĥ. Make sure that the subtitle file is in the same folder as the MKV video file.Ģ. The steps below will show you how to permanently embed (hardcode) the subtitles into an MKV video file.ġ. You can download MKVToolNix here (official website). You can install this tool on your computer, or you can use the portable version. It's available for Microsoft Windows, Linux, and macOS. MKVToolNix is a set of free tools to create, split, edit, mux, demux, merge, extract, and inspect MKV video files. How to merge subtitles with an MKV video using MKVToolNix You can also merge multiple subtitle files with an MKV video file. This tutorial will show you step by step how to merge SRT or SUB and IDX subtitle files with an MKV video file permanently. Windows Android Linux Internet How to merge a subtitle file with an MKV video (fast way)

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