You are a genius.
Thank you very much. For everyone who is interrested:
"( v4l2src device=/dev/video0 !
video/x-raw,width=1280,height=720,framerate=30/1 ! videoconvert ! omxh264enc
! video/x-h264, profile=(string)high ! h264parse ! rtph264pay name=pay0
I'll consider raspivid, actually I already have this working but I thought
that v4l2src is more convenient as well as more efficient, but you brought
me more light to this matter.
Sorry for for mistake, I set debug only for client leaving server by mistake
It is also a bit tricky for my why v4l2src works without specifing profile
in gst-launch-1.0 pipelines as I have many of them even with rtpbin working
fine. Seems like server does a bit more than I know.