RTP Stream

General
1

I have a customer, who needs to recieve a video + audio stream on a multicastadress via RTP. Has somebody succesfully setted up such a stream with CasparCG?

FFMPEG does support the RTP protocol and I have managed to send and recieve a video+audio stream in two ways.

  • Send video and audio serperated on different ports, by setting the -an (no audio) and -vn (no video) flags in the command

  • Addapting this method with the following command
    ADD 1 STREAM -vcodec libx264 -an -f rtp rtp://ip:5001 -acodec copy -vn -f rtp rtp://ip:5002

  • Problem with CasparCG:
    CasparCG does not interpret the -an (no audio) and the -vn (no video) flags as valid options.

Is there another way to seperate video from audio, that works with CasparCG?
Am I just might using the wrong syntax?

  • Using the option “-f rtp_mpegt” works fine in ffmpeg, without seperating video from audio

  • Problem with CasparCG:
    CasparCG again does not interprets rtp_mpegt as a valid option

Is someone able to help me with this?
Thanks in advance!

2

“-f rtp_mpegts”
works with the CasparCG Server 2.1.0

Problem solved.

3

Big problems now:
MPEGTS won’t work on the custumers side. Now I basically have to split audio from video, to send it as RTP packages.
Does somebody know a way to do it?
Even eliminating the whole audio stream from the CasparCG Channel would be progress.

Best regards
Tobias

4

RTP running audio and video on different ports has never been used in broadcasting. What does the client use to receive a signal and what formats does it support?

5

The client uses some selfdeveloped Software, based on ffmpeg libraries, to recieve the signal. They say, that they need to recieve RTP packages with H264 payload.