What is the fine-grained topic of the following text: show this help\n"
3369 "c Send command to filtergraph\n"
3370 "D cycle through available debug modes\n"
3371 "h dump packets/hex press to cycle through the 3 states\n"
3373 "s Show QP histogram\n"
3609 av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s " Only return the topic.
Commands and Debug Modes in Filtergraph