Using RTP library

[tomsasson-fibernet]

Hey @ireader,
Great project! I was trying to use RTP library, but cannot do that.
Could you post a test or example for using RTP in RFC3550 form and with MPEGTS?

[ireader]

1. At librtsp/source/utils, rtsp-muxer & rtsp-demuxer support mpeg-ts rtp packet "encode/decode"
2. At librtp/test， rtp-receiver-test is a example for rtp client receive udp & tcp packet.
3. At librtsp/test & librtsp/test/media, have a rtsp-server example, support raw h264 & ps & mp4 file vod play.

[tomsasson-fibernet]

Amazing! Thanks!

[tomsasson-fibernet]

Hi,
I still have an issue with MPEGTS packets over RTP. My wireshark doesn't decode the packets the way I would expect.
What I did is I use rtp_sender_test, but I am not sure that simply defining "packet" array is enough, there seems to be no RTP header in this test.
This function receives "rtpfile", now what I wonder is how do I create this file from the first place in MPEGTS packets wrapped by RTP packet.

[tomsasson-fibernet]

Hi @ireader ,
I still have an issue with MPEGTS packets over RTP. My wireshark doesn't decode the packets the way I would expect.
What I did is I use rtp_sender_test, but I am not sure that simply defining "packet" array is enough, there seems to be no RTP header in this test.
This function receives "rtpfile", now what I wonder is how do I create this file from the first place in MPEGTS packets wrapped by RTP packet.

What I want is to use "RTP with MPEG-2 PS/TS" as depicted in the Readme file, but too bad there are no comments in the code so I don't know where to approach.

By the way, later on if I succeed with my project, I will be able to help and comment the code so it will be more user-friendly, or add tests

[ireader]

librtsp/source/utils/rtsp-muxer.c can use to packet video/audio packet:

1. int pid = rtsp_muxer_add_payload(muxer, "RTP/AVP", 90000, RTP_PAYLOAD_MP2T, "MP2T", seq, ssrc, port, NULL, 0);
2. int video = rtsp_muxer_add_media(muxer, pid, RTP_PAYLOAD_H264, NULL, 0); // h264
3. int audio = rtsp_muxer_add_media(muxer, pid, RTP_PAYLOAD_MP4A, NULL, 0); // aac
4. rtsp_muxer_input(muxer, video, pts, dts, data, bytes, KEYFRAME); // write video

[Znroee]

Hi ireader,
Thanks for your provided info about using the RTP library against local file.
but, unfortunately, our video source is not a binary file, it is a stream pipe of real time video over UDP connection.

please tell us, what is the procedure (functions, steps) to wrap our video stream in RTP format. (in other word: take every raw data video frame that received and translate it to RTP packet).

Thanks a`lot.
Roee.

[ireader]

Which kind live stream in your scene?

For H.264 live video stream, here it is:

int pid = rtsp_muxer_add_payload(muxer, "RTP/AVP", 90000, RTP_PAYLOAD_H264, "H264", <seq>, <ssrc>, <port>, NULL, 0);
int video = rtsp_muxer_add_media(muxer, pid, RTP_PAYLOAD_H264, <avc decoder configuration record>, <bytes>); // h264

while(true) {
     // for each h264 frame
     rtsp_muxer_input(muxer, video, pts, dts, data, bytes, KEYFRAME); // write video
}

[Znroee]

Hi,

Thank you for your rapid response,
"rtsp_muxer_input" seems like a part from RTSP, while we need support in RTP (over UDP).
it is o.k to use this method also ?

[ireader]

Yes, it's RTP muxer.