Hi there
I am working on a C++ library file that captures an RTSP stream and extracts Onvif metadata. My libraries are extern "C" { #include <libavformat/avformat.h> #include <libavcodec/avcodec.h> #include <libavutil/avutil.h> } The problem is I don't want the video or audio tracks because the CPU workload is too high. If I could send DESCRIBE and SETUP requests in FFmpeg my DESCRIBE url would be rtsp://<ip>/Src/MediaInput/stream_1?event=1 And my SETUP url would be rtsp://<ip>/Src/MediaInput/trackID=4 ( metadata ) I've tried using a filtergraph char* filtergraph = av_strdup("!a:codec_type=video !a:codec_type=audio"); // Set the filtergraph expression as an option av_dict_set(&format_opts, "map", filtergraph, 0); // Set TCP as an option av_dict_set(&format_opts, "rtsp_transport", "tcp", 0); // Open the RTSP stream with the filtergraph expression int ret = avformat_open_input(&formatContext, fullrtspstring, nullptr, &format_opts); but trackID=1 the Video track is still captured. Any suggestions welcome on streaming with just the metadata track. Regards Graham
_______________________________________________ Libav-user mailing list Libav-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/libav-user To unsubscribe, visit link above, or email libav-user-requ...@ffmpeg.org with subject "unsubscribe".