Gstreamer with JetsonNano

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

I have raspberry pi cam working on jetson nano using this pipeline

nvarguscamerasrc ! video/x-raw(memory:NVMM), width=(int)3264, height=(int)1080, format=(string)NV12, framerate=(fraction)120/1 ! nvvidconv flip-method=0 ! video/x-raw, width=(int)1080, height=(int)720, format=(string)BGRx ! videoconvert ! video/x-raw, format=(string)BGR ! appsink

but it seems that the auto exposure and auto wb is enabled and changes the capture contrast and not stable.
My Question is how to read the values of the capture camera configs during the stream?
I need to read the gain and the exposure and white balance
Is there is a way for that ?

2

You may read this topic.

3

Hi,

You can read them using v4l2 controls and v4l2-ctl.

Example:

v4l2-ctl --get-ctrl=white_balance_temperature
white_balance_temperature: 4600

Here is a manual: https://www.kurokesu.com/main/2016/01/16/manual-usb-camera-settings-in-linux/

Greivin F.