ffmpeg - Remove video/audio streams by language

Use the map command to remove streams from media files.

The stream index begins at 0, so, for example, to remove the first stream in the file you would use -map -0:0, to remove the second stream you'd use -map -0:1:

ffmpeg -i "input.mkv" -map 0 -map -0:1 -c copy "output.mkv"

NOTE: The minus sign in front of the -0:1 is what counts as a removal.

Enhanced version to only keep English

fmpeg -i "input.mkv" -map 0:0 -map 0:a:m:language:eng? -c copy -c:s copy -map 0:s:m:language:eng? -map 0:d? -map 0:t? "output.mkv"

You can automate this process on your files using the following Tdarr Plugins:

To remove subtitle streams:

Tdarr_Plugin_x7ab_Remove_Subs

To remove audio streams based on language:

Tdarr_Plugin_MC93_Migz3CleanAudio