Mkvtoolnix How to extract audio tracks from RMVB to join MKV files

1, software preparation, download MKVToolNix7.5 software on the Internet, after the installation is completed, the menu below.

2, click Mkvmerge GUI.

3, click on "Mkvmerge GUI", open the software.

4, the following operations.

① Click the "Add" button to find the RMVB file to extract.

② Displays the open RMVB file under the input file.

③ only check track tracks, do not put the video track selected.

④ Note the output track file path.

⑤ Click the "Start Mixed Flow" button.

5, click the "Start Mixed Flow" button, start to extract the audio track files.

6, about a few 10 seconds, the track file extraction completed, the following figure.

7, will just extract the Mka audio track added to the MKV HD movie files.

① Add MKV HD files and Mka track files separately.

②mkv HD files only tick the video track and tick the MKA track track.

③ Click the "Start Mixed Flow" button.