Batch convert ts to mkv with audio language tagging

[Learning2do]

I have multiple .ts files that i want to batch convert losslesly to .mkv

I have found this ffmpeg bat file that do the job except adding language id.

for %%a in ("*.ts") do ffmpeg -i "%%a" -vcodec copy -acodec copy "%%~na.mkv"
pause

All my files have just video and one audio no subtitles.

Its very frustrating to remux with mkvtoolnix gui and manualy add english tag for audio.

If i use first bat file to remux .ts to .mkv and then this bat file

for %%a in (*.mkv) do "C:\Program Files\MKVToolNix\mkvpropedit.exe" "%%a" --edit track:a1 --set language=eng

i finally get files like i want them. Could some nice person help me get this done with just one bat file.

[video.baba]

I have found this ffmpeg bat file that do the job except adding language id.

for %%a in ("*.ts") do ffmpeg -i "%%a" -vcodec copy -acodec copy "%%~na.mkv"
pause

All my files have just video and one audio no subtitles.

Changing your bat file slightly to that shown below should do what you want.

for %%a in ("*.ts") do ffmpeg -i "%%a" -c:v copy -c:a copy -metadata:s:a:0 language=eng "%%~na.mkv"
pause

[pandy]

for %%a in ("*.ts") do ffmpeg -i "%%a" -map 0 -c copy -metadata:s:a:0 language=eng "%%~na.mkv"
pause

[Learning2do]

@video.baba
@pandy
Thank you for your help. You both made my life a lot easier.