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2021-12-08 19:54:44 -0500 marked best answer usb-cam using deprecated pixel format

I am using ubuntu mate 20.04 focal and i have installed ros noetic, I am trying to use a logitech c920 webcam, however when i run rosrun usb_cam usb_cam_node i get the following error [swscaler @ 0x229f390] no accelerated colorspace conversion from yuv422p to rgb24, [swscaler@ 0x229f390] deprecated pixel format used, make sure you set the range correctly

i read that these are just warnings however, when i run rosrun rviz rviz it doesn't display the image from the webcam

the webcam does work though if i open it through Cheese or vlc it displays just fine

i have tried using the fixes found here

https://answers.ros.org/question/1735...

and here

https://github.com/ros-drivers/usb_ca...

and here

https://github.com/ros-drivers/usb_ca...

however, no of these solutions have seemed to work i've also tried changing the ffmpeg code in the usb_cam.cpp code but i haven't been able to get that to work either.... when i run v4l2-ctl --list-formats-ext -d /dev/video0 i get the following
ioctl: VIDIOC_ENUM_FMT Type: Video Capture

[0]: 'YUYV' (YUYV 4:2:2)
    Size: Discrete 640x480
        Interval: Discrete 0.033s (30.000 fps)
        Interval: Discrete 0.042s (24.000 fps)
        Interval: Discrete 0.050s (20.000 fps)
        Interval: Discrete 0.067s (15.000 fps)
        Interval: Discrete 0.100s (10.000 fps)
        Interval: Discrete 0.133s (7.500 fps)
        Interval: Discrete 0.200s (5.000 fps)

i think the problem is that it's using deprecated ffmpeg code to try and convert it from yuyv to mjpeg? but i'm not sure if i'm right about this....

how do i fix this? please help..... is there another ros package that i could try?

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2021-05-19 10:44:50 -0500 marked best answer xv-11-lidar cannot find the right port

I am using ubuntu mate 20.04 focal and i have installed ros noetic, i'm following the following tutorial http://wiki.ros.org/xv_11_laser_drive...

when i try to run the following command

rosrun xv_11_laser_driver neato_laser_publisher port_:=/dev/ttyACM0

I get the following error: [ERROR] [1582038870.703246684]: Error instantiating laser object. Are you sure you have the correct port and baud rate? Error was open: No such file or directory

in the tutorial when i try to run the following command it says "error file doesn't exist"

echo 'SUBSYSTEMS=="usb", KERNEL=="ttyUSB[0-9]*", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", SYMLINK+="sensors/ftdi_%s{serial}"' > /etc/udev/rules.d/52-ftdi.rules

when i change 52-ftdi.rules to the actual file that is in the rules.d folder which is 70-snap.snapd.rules it says "permission denied"

when i run dmesg -w i get the following output usb 1-1.2: Product: USB Serial usb 1-1.2: Manufacturer: Teensyduino usb cdc_acm 1-1.2:1.0 ttyACM0: USB ACM device

when i run lsusb i get the following Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 046d:c077 Logitech, Inc. M105 Optical Mouse Bus 001 Device 003: ID 1a2c:2124 China Resource Semico Co., Ltd Bus 001 Device 008: ID 16c0:0483 Van Ooijen Technische Informatica Teensyduino Serial Bus 001 Device 007: ID 046d:0892 Logitech, Inc. OrbiCam Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

i'm not sure if the problem is because the rosrun instruction isn't getting the right port? if this is the problem then how do i change the permissions in the 70-snap.snapd.rules file? or if the problem is due to something else?

the lidar does turn when i plug it in and as far as i can tell it's not a hardware issue.....

please help me

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2021-04-24 23:38:17 -0500 asked a question rosrun cv_camera cv_camera_node causing fixed frame error

rosrun cv_camera cv_camera_node causing fixed frame error I am running ros noetic on a raspberry pi 4. I am trying to us

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2021-04-16 19:15:38 -0500 edited question usb-cam using deprecated pixel format

usb-cam using deprecated pixel format I am using ubuntu mate 20.04 focal and i have installed ros noetic, I am trying t

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2021-04-16 15:46:29 -0500 commented answer xv-11-lidar cannot find the right port

However, when i run rosrun rviz rviz it's not showing any output from the lidar which so i'm not sure what that means?

2021-04-16 14:37:04 -0500 commented answer xv-11-lidar cannot find the right port

it worked after i ran sudo chmod 666 /dev/ttyACM0 and then re-did a catkin_make so thanks

2021-04-15 18:29:58 -0500 edited question usb-cam using deprecated pixel format

usb-cam using deprecated pixel format I am using ubuntu mate 20.04 focal and i have installed ros noetic, I am trying t

2021-04-15 17:39:36 -0500 asked a question usb-cam using deprecated pixel format

usb-cam using deprecated pixel format I am using ubuntu mate 20.04 focal and i have installed ros noetic, I am trying t

2021-04-15 13:06:18 -0500 commented answer xv-11-lidar cannot find the right port

i tried running sudo chmod 666 /dev/ttyACM0 but it still gave me the same error

2021-04-15 13:05:43 -0500 commented answer xv-11-lidar cannot find the right port

i tried running sudo chmod 666 /dev/ttyACM0 but it still gave me the same error

2021-04-15 04:56:02 -0500 asked a question xv-11-lidar cannot find the right port

xv-11-lidar cannot find the right port I am using ubuntu mate 20.04 focal and i have installed ros noetic, i'm followin