>>> >> >> >> I cannot sure use -cc_stream_map_ccgroup option is ok, because the ccgroup >> string is not standard, maybe it can be defined bu user. >> Maybe two ways: >> 1. use -cc_stream_map_ccgroup ? this way is defined the name by ffmpeg, >> cannot modify. >> 2. parse the closed captions group string by KeyValue way? maybe this is >> better. > > Actually, these requirements have been already handled. The parsing is > happening based on key value pairs. The keys are ‘ccgroup’, ‘instreamid’, > ‘language’. The values for these keys can be set after ‘:’ as given the > examples in the patch. > I am assuming you are trying to set ccgroup name as closecgroup. In that > case, please modify the command as below. Because, the string ‘ccgroup’ is a > key value, whatever string that comes after ‘ccgroup:’ is the cc group name. > ./ffmpeg -re -f lavfi -i color=red -g 25 -b:v 1000k -b:a 64k -a53cc 1 -f > hls -cc_stream_map "ccgroup:closecgroup,instreamid:CC1,language:en" > -master_pl_name master.m3u8 live/out.m3u8 > > To clarify further, consider user wants to set cc group name as ‘mycaptions’, > instream id as ‘SERVICE60’ language as Spanish, in that case, the map string > would be > -cc_stream_map "ccgroup:mycaptions,instreamid:SERVICE60,language:sp” I understand and i got the point, just one question, do you want force the user use ffmpeg must input a string “ccgroup” ? if yes, maybe don’t let the user input it use string, maybe use -cc_stream_map_ccgroup is better, What do you think about it?
Thanks Steven _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
