How to extract only forced subtitles with a batch muxing using mkvmerge?

[davboc]

Hi all!

There is an option to extract only forced subtitles using a windows script and mkvmerge.exe?

Now i use this script

for %%A IN (*.mkv) do (
"C:/Program Files/mkvtoolnix\mkvmerge.exe" -o "remux-%%~nA.mkv" -a ita "%%~A"
)

that extract only audio track with Italian language, but I can't find the way to extract only forced subtitles.

Thanks

[sneaker]

It doesn't have a feature to filter out by forced-track flag. You would have to use mkvmerge --identify-verbose, parse that in your script/app to search for the forced-track flag and derive the TrackIDs.