Image Digitization over wired ethernet network gstreamer stream

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

I am currently seeing a lot of digitization in my test network streams when moving the camera. The Jetson Nano and receiving computer are wired to the same high speed router. My camera is a Basler daa4200-30mci

My transmit stream is:

gst-launch-1.0 pylonsrc ! video/x-raw,width=2560,height=1440,format=UYVY ! videoconvert ! omxh264enc bitrate=500000 ! 'video/x-h264, stream-format=(string)byte-stream' ! rtph264pay ! udpsink host=192.168.1.157 port=5000

My receive stream is:

gst-launch-1.0 udpsrc port=5000 ! application/x-rtp,encoding-name=H264,payload=96 ! rtph264depay ! avdec_h264 ! autovideosink sync=false async=false -e

I have adjusted bit rate, sync, async, etc… I am wondering what methods the forum has used to reduce digitization noise during motion on an encoded stream.

Thank you!

3

Hi,
For adjusting video quality, we suggest run in CBR mode and set virtual buffer size property. Please refer to the commands:
H264 vs H265 - #4 by DaneLLL

4

Hi @DaneLLL - Thank you for the response.

It’s now appearing slightly better, but we’re still seeing a fair amount of digitization with this stream:

Transmit:

gst-launch-1.0 pylonsrc ! video/x-raw,width=1920,height=1080,format=UYVY ! nvvidconv ! nvv4l2h264enc bitrate=14000000 control-rate=0 vbv-size=450000 ! 'video/x-h264, stream-format=(string)byte-stream' ! rtph264pay ! udpsink host=192.168.1.157 port=5000

Receive:

gst-launch-1.0 udpsrc port=5000 ! application/x-rtp,encoding-name=H264,payload=96 ! rtph264depay ! avdec_h264 ! autovideosink sync=false async=false -e

I’ll be looking through the accelerated gstreamer guide, but any additional clues are certainly welcome.

5

Hi @DaneLLL

I have found through experimentation that our stream is heavily digitized unless we set: iframeinterval=1.

Anything above 1 causes heavily digitization on a h264, and especially h265 stream in the following pipeline:

gst-launch-1.0 pylonsrc ! video/x-raw,width=2560,height=1440,format=UYVY ! nvvidconv ! nvv4l2h265enc bitrate=50000000 control-rate=0 vbv-size=10000000 iframeinterval=1 ! rtph265pay ! udpsink host=192.168.1.157 port=5000

Would you be able to suggest any solutions or things I can try here?

Thank you.

6

Hi,
The source is in 2560x1440p30 and 5Mbps is a bit strict. Would suggest set 10Mbps-12Mbps.