This tutorial will show you step by step how to merge SRT or SUB and IDX subtitle files with an MKV video file permanently.

Ffmpeg -i input.mkv -codec copy output.mp4 It auto-detects a Matroska to MP4 container conversion based on input/output filenames.codec copy stream copies, or 're-muxes', the streams from the input to the output without re-encoding. Think of it like a copy and paste. Sudo apt-get install gpac mkvtoolnix Extract video and audio from matroska file. First you need to check what tracks the matroska file contains with. Mkvmerge -identify video.mkv. File 'video.mkv': container: Matroska Track ID 1: video (VMPEG4/ISO/AVC) Track ID 2: audio (AAC3) Then extract video and audio according to their tracks with. Hi this is a little tutorial about how set lenguage tags on mp4 and mkv files. If you don’t like to see AUDIO tag as “UNKNOWN” on your videos and go from this to this or this to this you just have to: Get MKVToolNix and GPAC both open source free an multiplataform.

You can also merge multiple subtitle files with an MKV video file.

How to merge subtitles with an MKV video using MKVToolNix

MKVToolNix is a set of free tools to create, split, edit, mux, demux, merge, extract, and inspect MKV video files.

It's available for Microsoft Windows, Linux, and macOS.

You can install this tool on your computer, or you can use the portable version.

You can download MKVToolNix here (official website).

The steps below will show you how to permanently embed (hardcode) the subtitles into an MKV video file.

1. Make sure that the subtitle file is in the same folder as the MKV video file.

2. Make sure that the subtitle file has the same filename as the MKV video file.

Example:

• Movie.mkv
• Movie.srt
• Movie.sub
• Movie.idx

3. Open MKVToolNix.

4. Click on the + Add source files button located at the bottom.

Mkv To Mp4 Online Converter

A “Add media files” window will appear.

5. Within this window, you go to the location on your computer where the MKV video and subtitle file(s) are.

6. Select the MKV video file and subtitle file(s) (.srt, .sub or .idx).

7. Click on the Open button.

8. 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.

You can change the location by clicking on the (folder) button located next to the “Destination file” field.

9. When you're ready, you click on the Start multiplexing button at the bottom.

MKVToolNix will now merge the SRT or SUB and IDX subtitles with the MKV video file.

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