srt only working if gst debug level is 5

[gorleabhinav]

I am facing some weird issue while streaming with srt, I am not sure this issues is related gstreamer or srt library.

Pipeline1:

gst-launch-1.0 --gst-debug=srt*:5 rtspsrc location="rtsp://admin:admin@localhost/live.sdp" short-header=TRUE name=demux demux. ! rtph265depay ! queue ! video/x-h265 ! mpegtsmux name=mux1 ! srtsink uri=srt://:8888 demux. ! queue ! rtpmp4adepay ! aacparse ! mux1.

Pipeline2:

gst-launch-1.0  rtspsrc location="rtsp://admin:admin@localhost/live.sdp" short-header=TRUE name=demux demux. ! rtph265depay ! queue ! video/x-h265 ! mpegtsmux name=mux1 ! srtsink uri=srt://:8888 demux. ! queue ! rtpmp4adepay ! aacparse ! mux1.

Pipeline1 is working:
able to see the video stream on vlc player.

Pipeline2 is not working:
there is no error while playing Pipeline2, but not getiing any video on vlc player.

The difference between pipelines is Pipeline1 has --gst-debug=srt*:5 and Pipeline2 does not has the set debug level.

version details:
gstreamer vesrion: 1.16.2
srt version: 1.5.0

how can we fix this issue ?
any help would be appreciated.

[maxsharabayko]

Does VLC show any error in the "messages" window?
Do you see any SRT traffic on the network?

[gorleabhinav]

VLC does not showing any error in the message window.
For pipeline2: on network I can see only keepalive packets.

[ethouris]

If so, it means that the connection has been established successfully, but no data are being sent. Hard to speculate what happened, but definitely the call to any srt_send* functions hasn't been done. Could be also messing with the buffer sizes, but I doubt that the gstreamer element is changing default options.

@justinjoy maybe you can help?

[gorleabhinav]

@ethouris , @justinjoy any update?

[ethouris]

Seems like Justin is busy and I don't know how to approach it. Still, I'd look for problems in the sources of the srtsink element. Might be like executing key functions in assert() or something like that.

[gorleabhinav]

Sure. For more info check unable-to-live-stream-using-srt-facing-unsupported-timestamp-reference-clock.

[gorleabhinav]

@maxsharabayko any update?

[maxsharabayko]

@gorleabhinav No updates. Any help is appreciated.