How to stream camera over network

[LMarq.4]

I am a beginner with STM32MPUs and I've been trying to follow the example: How to stream camera over network (can't add links because I'm a new member but it's in ST Wiki)

I'm trying to stream the video from an USB Webcam connected to the STM32MP157F-DK2 over the network to another Ubuntu PC running on a virtual machine.

Unfortunately it doesn work. When I run:

v4l2-ctl --set-parm=30;v4l2-ctl --set-fmt-video=width=640,height=480,pixelformat=JPEG --stream-mmap --stream-count=-1 --stream-to=- 2>/dev/null | gst-launch-1.0 fdsrc ! jpegparse ! rtpjpegpay ! udpsink host=192.168.0.9 port=5000

I see the webcam's LED on and I get the following output:

Frame rate set to 10.000 fps
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...

Then, when I run the command below on the host PC side, nothing happens.

gst-launch-1.0 udpsrc port=5000 ! application/x-rtp, encoding-name=JPEG ! rtpjpegdepay ! jpegparse ! decodebin ! videoconvert ! autovideosink

I have been able to test the webcam and I can see the video on the DK2's display using the following command

gst-launch-1.0 v4l2src device="/dev/video0" ! videoconvert ! autovideosink

Any ideas on what could be wrong with my test?

[OlivierK · Accepted solution]

Hi LMarq.4 (Community Member)

Can you double check that you can ping the host 192.168.0.9 from the target?

I reproduced the test on an MP15-EV1 board with the ov5640 sensor, using the ethernet over usb cable to the host.

On the Host side:

enxbc141b6e675f: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500

    inet 192.168.7.229

On target side:

root@stm32mp1:~# ifconfig 

usb0   Link encap:Ethernet HWaddr EA:FA:3B:72:75:98             

     inet addr:192.168.7.1 Bcast:192.168.7.255 Mask:255.255.255.0     

 Target side:    

root@stm32mp1:~# v4l2-ctl --set-parm=30;v4l2-ctl --set-fmt-video=width=640,heigh

t=480,pixelformat=JPEG --stream-mmap --stream-count=-1 --stream-to=- 2>/dev/null

 | gst-launch-1.0 fdsrc ! jpegparse ! rtpjpegpay ! udpsink host=192.168.7.229 po

rt=5000                                     

Frame rate set to 30.000 fps                           

Setting pipeline to PAUSED ...                          

Pipeline is PREROLLING ...                            

Pipeline is PREROLLED ...                            

Setting pipeline to PLAYING ...                         

New clock: GstSystemClock  

Host side:

$ gst-launch-1.0 udpsrc port=5000 ! application/x-rtp, encoding-name=JPEG ! rtpjpegdepay ! jpegparse ! decodebin ! videoconvert ! autovideosink

Setting pipeline to PAUSED ...

Pipeline is live and does not need PREROLL ...

Setting pipeline to PLAYING ...

New clock: GstSystemClock

Then a gst-launch-1.0 pop up window pops up on host, displaying the video capture.

Rgds,

Olivier