new_audio_stream 1708 ffmpeg_opt.c       case AVMEDIA_TYPE_AUDIO: ost = new_audio_stream(o, oc, -1); break;
new_audio_stream 1913 ffmpeg_opt.c                   new_audio_stream(o, oc, idx);
new_audio_stream 1997 ffmpeg_opt.c                   case AVMEDIA_TYPE_AUDIO:      ost = new_audio_stream     (o, oc, src_idx); break;