I am using the test-launch application of gst-rtsp-server to stream out from v4l2src . I tested out two pipelines one with x264 encoding and other one without any encoding and obtained the following results.
x264 encoding pipeline :
server side : ./test-launch "v4l2src device=/dev/video2 ! videoscale ! "video/x-raw,width=720,height=576,framerate=30/1,format=I420" ! x264enc speed-preset=ultrafast tune=zerolatency ! rtph264pay name=pay0 pt=96 -v"
client-side
gst-launch-1.0 rtspsrc latency=50 location=rtsp://
127.0.0.1:8554 ! rtph264depay ! decodebin ! videoconvert ! ximagesink -v
The above pipeline runs absolutely fine with a good fps.
However when i remove the encoding as follows:
server side:
./test-launch "v4l2src device=/dev/video2 ! videoscale ! "video/x-raw,width=720,height=
576,format=I420" ! rtpvrawpay name=pay0 pt=96 "
client-side :
gst-launch-1.0 rtspsrc latency=50 location=rtsp://127.0.0.1:8554/test ! rtpvrawdepay ! videoconvert ! ximagesink -v
It throws the following error:
ERROR: from element /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: Internal data flow error.
Additional debug info:
gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0:
streaming task paused, reason not-negotiated (-4)
Execution ended after 0:00:00.006836897
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Then i tried out with videotestsrc without encoding which worked absolutely fine as well.
server side:
./test-launch "videotestsrc ! videoscale ! "video/x-raw,width=720,height=
576,format=I420" ! rtpvrawpay name=pay0 pt=96 "
client-side :
gst-launch-1.0 rtspsrc latency=50 location=rtsp://127.0.0.1:8554/test ! rtpvrawdepay ! videoconvert ! ximagesink -v
Any help would be greatly appreciated.
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