> dvd2concat uncompressed.dvdmedia > file.concat > ffmpeg -analyzeduration 500M -probesize 500M -forced_subs_only 1 \ > -safe 0 -f concat -protocol_whitelist concat,ffconcat,file,subfile -i > file.concat \ > -vsync cfr \ > -map 0:0 -c:v hevc_videotoolbox -disposition:v default \ > -map 0:1 -c:a:0 copy -disposition:a:0 default \ > -map 0:5 -c:s:0 copy -disposition:s:0 default \ > -default_mode passthrough \ > compressed.mkv > > However, when I play that compressed.mkv movie I see English subtitles for > EVERYTHING and not for only the forced parts i.e. when only a foreign > language is being spoken. > > Could somebody please help me doing this last part so that my final subtitle > track only contains the forced subtitles like it does when I start with an > MKV instead. Thanks!
I think I found a solution through dumb luck while awaiting a response. I had previously been using the dvdsub codec and was told to use the "copy" codec instead, so I switched everything over to that. Later, when the dvd2concat technique was proposed, I ended up with the above commands, but that still didn't work - the final mkv file had English subtitles for everything instead of just the desired forced subtitles. On a whim, I thought I'd try using the "dvdsub" subtitle codec again i.e. these commands: dvd2concat uncompressed.dvdmedia > file.concat ffmpeg -analyzeduration 500M -probesize 500M -forced_subs_only 1 \ -safe 0 -f concat -protocol_whitelist concat,ffconcat,file,subfile -i file.concat \ -vsync cfr \ -map 0:0 -c:v hevc_videotoolbox -disposition:v default \ -map 0:1 -c:a:0 copy -disposition:a:0 default \ -map 0:5 -c:s:0 dvdsub -disposition:s:0 default \ -default_mode passthrough \ compressed.mkv and this time my final subtitle track was only the forced subtitles!! I'm so happy :-). It looks like if you use the dvd2concat method you must the dvdsub codec if you want "-forced_subs_only 1" to work. There is also apparently an error in my earlier posts. I could have sworn when I switched everything over to the subtitle "copy" codec that I confirmed I still got only the forced subtitles with an MKV input, but I just checked again and that's not so. It looks like the only way to get just the forced subtitles via "-forced_subs_only 1" with an MKV input is by using the dvdsub codec. Regards, Mick _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
