mkvmerge remux.bat

::remux.bat
set mkvmerge="path\to\mkvmerge.exe"
set output_folder=path\to\output\folder
for /r %%a in (*.mkv) do call %mkvmerge% -o "%output_folder%\%%~na.mkv" paste_1 "%%a" paste_2
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::remux.bat
set mkvmerge="C:/Program Files/MKVToolNix\mkvmerge.exe"
set output_folder=P:\Berserk\Season 1(2)
for /r %%a in (*.mkv) do call %mkvmerge% -o "%output_folder%\%%~na.mkv" --default-track 0:yes --language 1:jpn --track-name "1:Japanese Audio (FLAC 2.0)" --default-track 1:yes --language 2:eng --track-name "2:English Audio (AC3 2.0)" --language 3:eng --track-name "3:English Subtitles (ASS)" --default-track 3:yes --language 4:eng --track-name "4:Signs (ASS)" --language 5:eng --track-name "5:English Subtitles (SRT)" --language 6:eng --track-name "6:Signs (SRT)" "%%a" --track-order 0:0,0:1,0:2,0:3,0:4,0:5,0:6