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Hello Ravi,
Thank you for reaching out to us. It seems you are using the v4l2-ctl command to capture an image from your USB 3.0 camera connected to the iMX8MP device. The image size being only 600 KB could be due to several factors, such as the resolution or format settings of the camera.
Here are some steps to help you troubleshoot and potentially resolve this issue:
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Check Supported Formats and Resolutions:
Use the following command to list the supported formats and resolutions of your camera:v4l2-ctl --device=/dev/video4 --list-formats-extThis will show you the available pixel formats and frame sizes. Ensure you are capturing at the desired resolution.
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Adjust Capture Settings:
If the resolution is lower than expected, you can specify a higher resolution using the--set-fmt-videooption. For example:v4l2-ctl --device=/dev/video4 --set-fmt-video=width=1920,height=1080,pixelformat=YUYVReplace
1920x1080andYUYVwith your desired resolution and format. -
Capture Image Again:
After setting the desired format and resolution, try capturing the image again with:v4l2-ctl --device=/dev/video4 --stream-mmap=3 --stream-to=rv.jpg --stream-count=1 -
Consider Using GStreamer:
If you need more control over the capture process, consider using GStreamer, which provides a flexible framework for handling video streams. A simple GStreamer pipeline to capture an image might look like this:gst-launch-1.0 v4l2src device=/dev/video4 ! videoconvert ! jpegenc ! filesink location=rv.jpg
By following these steps, you should be able to adjust the capture settings to achieve the desired image size and quality. If you continue to experience issues, ensure that your camera is functioning correctly and that the necessary drivers are installed.
Best regards,
Toradex AI Assistant
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