Unsupported Transport for gstreamer rtspclientsink

[ciklista]

Which version are you using?

v0.16.0

Which operating system are you using?

OS

• Linux
• Windows
• macOS

Architecture

• amd64
• arm64
• arm7
• arm6 (running on an NVIDIA Jetson Xavier)

Describe the issue

I want to use gstreamer to publish an rtsp stream through a cv2 videoWriter (python). My gstreamer pipeline and code look as follows:

gst_out = "appsrc ! video/x-raw, width=(int)1280, height=(int)720, format=BGR ! videoconvert ! x264enc !" \
             "rtspclientsink location=rtsp://localhost:8554/mystream "
out = cv2.VideoWriter(gst_out, cv2.CAP_GSTREAMER, 0, float(fps), (int(w), int(h)))
while True:
    frame = gen_frame()
    out.write(frame)

The RTSPSimple server registers the pipeline, but crashes instantly. The rtsp server logs are as follows:

2021/05/19 15:54:29 D [0/0] [RTSP] [conn 172.17.0.1:53898] [c->s] OPTIONS rtsp://localhost:8554/mystream RTSP/1.0
CSeq: 1
Date: Wed, 19 May 2021 15:54:29 GMT
User-Agent: GStreamer/1.14.5


2021/05/19 15:54:29 D [0/0] [RTSP] [conn 172.17.0.1:53898] [s->c] RTSP/1.0 200 OK
CSeq: 1
Public: DESCRIBE, ANNOUNCE, SETUP, PLAY, RECORD, PAUSE, GET_PARAMETER, TEARDOWN
Server: gortsplib


2021/05/19 15:54:33 D [0/0] [RTSP] [conn 172.17.0.1:53898] [c->s] ANNOUNCE rtsp://localhost:8554/mystream RTSP/1.0
CSeq: 2
Content-Length: 394
Content-Type: application/sdp
Date: Wed, 19 May 2021 15:54:33 GMT
User-Agent: GStreamer/1.14.5

v=0
o=- 2455273774 1 IN IP4 127.0.0.1
s=Session streamed with GStreamer
i=rtspclientsink
t=0 0
a=tool:GStreamer
m=video 0 RTP/AVP 96
c=IN IP4 0.0.0.0
b=AS:2097
a=rtpmap:96 H264/90000
a=framerate:15
a=fmtp:96 packetization-mode=1;profile-level-id=f4001f;sprop-parameter-sets=Z/QAH5GbKAoAt2AtQEBAUAAAAwAQAAADAejxgxlg,aOvsRIA=
a=control:stream=0
a=ts-refclk:local
a=mediaclk:sender

2021/05/19 15:54:33 I [0/0] [RTSP] [session 1115355645] opened by 172.17.0.1:53898
2021/05/19 15:54:33 D [0/0] [RTSP] [conn 172.17.0.1:53898] [s->c] RTSP/1.0 200 OK
CSeq: 2
Server: gortsplib
Session: 1601281461


2021/05/19 15:54:33 D [0/0] [RTSP] [conn 172.17.0.1:53898] [c->s] SETUP rtsp://localhost:8554/mystream/stream=0 RTSP/1.0
CSeq: 3
Date: Wed, 19 May 2021 15:54:33 GMT
Session: 1601281461
Transport: RTP/AVP/UDP;unicast;client_port=42382-42383;mode=RECORD
User-Agent: GStreamer/1.14.5


2021/05/19 15:54:33 D [0/0] [RTSP] [conn 172.17.0.1:53898] [s->c] RTSP/1.0 461 Unsupported Transport
CSeq: 3
Server: gortsplib


2021/05/19 15:54:33 I [0/0] [RTSP] [session 1115355645] closed
2021/05/19 15:54:33 I [0/0] [RTSP] [conn 172.17.0.1:53898] closed

Looks like something is wrong with the transport mode, but I can't really figure out what.
Am I doing something wrong or is this something going wrong on the server side? Might this be related to: #40 (comment) ?

[aler9]

Hello, are you sure that the UDP protocol is enabled? what's the configuration of the server?

[ciklista]

No, I want to use TCP in my case.
My run command is
docker run --rm -it -e RTSP_PROTOCOLS=tcp -e RTSP_LOGLEVEL=debug -p 8554:8554 -p 1935:1935 aler9/rtsp-simple-server

[aler9]

You have to edit the pipeline in this way and add the protocols=tcp flag

"appsrc ! video/x-raw, width=(int)1280, height=(int)720, format=BGR ! videoconvert ! x264enc !" \
             "rtspclientsink protocols=tcp location=rtsp://localhost:8554/mystream

[ciklista]

perfect! Thank you very much!

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