RSPI 4 and Cam streaming

DejanCotra dejancotra at
Fri Aug 28 18:31:46 UTC 2020

Hi Nicolas,

no there is no error as far as I can see with GST_DEBUG=3.
Regarding v4l2convert I remove it from pipeline as it turns out its not
needed after all so pipeline looks now like this:
v4l2src ! video/x-raw,width=(int)640,height=(int)480 ! queue ! v4l2h264enc
extra-controls=s,h264_i_frame_period=15,h264_profile=1,h264_level=10 !
video/x-h264 ! h264parse ! rtph264pay config-interval=-1 name=payloader !
queue ! " RTP_CAPS_H264 "96

I remove also video_bitrate, but yes nice catch I just copied it from
x264enc and for it its kbit/sec :)
ok I guees I can try to remove profile and level as well.
How can I set video_gop_size, then I run v4l2-ctl -d /dev/video11 -L there
is no video_gop_size control?

What is more interesting when I use pipeline like above I was able to stream
my camera to (I use this website for testing)
but my windows Gstremer application still has same problem :(

Unfortunately I can not share my application its under NDA. both RPi4 app
which is QT application nor Windows application.
Plus Im running on RPi4 AGL (Automotive Grade Linux) and I had to apply some
tweaks to official AGL image and build additional libraries in order to run
my QT application.

Thank you very much for support.


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