[mjpeg @ 0x1071e00] Changeing bps to 8 and [swscaler @ 0x1080d60] deprecated pixel format used, make sure you did set range correctly about usb_cam

[lhzlhz]

Run the usb_cam not in a virtual machine, then everthing is ok.

[lhzlhz]

This is camera1, not camera0. And I have set 'yuyv' for camera1, it is not correct. The camera0 works normally. Camera0 is integrated. But I want use camera1.

The video show normal? If it work normal, you can ignore the information.
Or you can try like this https://answers.ros.org/question/217382/garbled-image-problem-on-usb_cam/

[lukehutch]

Setting yuyv as the format is not a good answer, if the camera natively outputs MJPEG, and you want to keep the video frames in compressed mjpeg format, e.g. for recording to a bag file. Raw YUYV frames are much bigger than MJPEG frames.

[vannem95]

I don't get the calibration file not found warning but i do get the bit rate message. Also it says 30 fps but the average rate (found using rostopic hz) ranges from 12 hz to 0.5 hz. Sometimes all of a sudden the fps increases to 20-25 and sometimes i get the select timeout error and the process is terminated. Anyone able to solve this issue?

[lhzlhz]

Try run a ubuntu not install in the virtual machine.

[Damowerko]

The problem persists when doing a native install.

[henryng375]

Did anyone solve this problem?

[jptalledo10]

Having the same problem with a USB Camera. Checking if there is a fix or a workaround for this

[smallpigg]

Same problem, did anyone solve this problem? I have not run it in virtual machine.

[lhzlhz]

Same problem, did anyone solve this problem? I have not run it in virtual machine.

Do you use USB2.0 for the camera? You can try for the USB3.0. If it doesn't work, you can show the terminal information to us.

[smallpigg]

It was used a USB3.0 with blue color. Here are two screenshots.

[smallpigg]

Here is the launch file

[lhzlhz]

Here is the launch file

Modify "pixel_format" from "mjpeg" to "yuyv" in the launch file .

[smallpigg]

This is camera1, not camera0. And I have set 'yuyv' for camera1, it is not correct. The camera0 works normally. Camera0 is integrated. But I want use camera1.

[smallpigg]

Ok, the video shows normal. Thanke you.