Questions tagged [camera]

A photo or video device that's typically tethered to the computer via a standard bus such as USB.

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No /dev/video* in Arch Linux on Dell XPS 13 Plus (9320)

I finally got the new Dell XPS Plus, I've installed Arch Linux (with Xfce4) but it seems like that are no recognizable webcams or video devices, even though the laptop has a built-in one + IR camera. ...
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Intermittent issue with Logitech Webcam C270 on Pop OS 22.04 - UVC Camera (046d:0825)

I seem to have issues with my webcam on Pop OS 22.04 and on LMDE 4. I was using the same device flawlessly on Xubuntu 18.04. When trying to use the camera with cheese or guvcview I often get a white ...
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MetaData on connected video camera

When connecting a webcam (logitech C270), it creates two entries /dev/video0 and /dev/video1. The first contains the capture and the second meta data. However I'm trying to move an application ...
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V4L2: Why image taken with shortest exposure-time looks way too brighter than auto-exposure mode?

When capturing image using the default auto-exposure-mode: $ v4l2-ctl -d0 --set-fmt-video=width=width,height=height,pixelformat=MJPG --stream-mmap --stream-to=auto_expo.jpg --stream-count=1 auto_expo....
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usbip: error: Attach Request for <busid> failed - Device busy (exported)

I have attached and detached my USB webcam to/from Ubuntu 20.04 in WSL2 with usbipd-win using the instructions in Connect USB Devices. From PowerShell: usbipd wsl attach --busid 2-4 Once I'm done, I ...
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How to control webcam's exposure time (using V4L2) based on the certain pixel's value?

I'd like to control the exposure time such that certain average value of certain window (e.g. 10x10+230+70) always fall between 100 to 220. /p.s. Camera is monochrome/ Something like following: loop ...
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Motion doesn't detected my webcam : UNABLE TO OPEN VIDEO DEVICE

I would use a USB webcam with Motion software, installed in Ubuntu on my Windows PC (WSL2 ) But when I started Motion as a service and i check on browser at the address [LOCALHOLST:port 8080 or 8081 ] ...
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Raspberry Pi 4 doesn't show USB camera as ttyUSB

I have an RPi camera and a USB camera connected to my RPi4. lsusb: pi@raspberrypi:~ $ lsusb Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 0c45:636b Microdia ...
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How to stream the linux framebuffer as video over http

I have an embedded linux system (yocto based) with a framebuffer UI (no X11) and a running web server. Now I'm asking how to "mirror" the screen contents to a web page. Think of it like a ...
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Does GoToMeeting web client work on Ubuntu Firefox?

Today I tried to use the GoToMeeting web client on Firefox under Ubuntu 18.04. On the initial login page my camera worked, but when I entered the meeting, the controls on the client were completely ...
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How to receive "v4l2-ctl --stream-to-host" stream from a machine on the same LAN on said host for use with, e.g., video conferencing software?

There is an example that streams a webcam to another computer by piping a V4L2 stream into netcat (v4l2-ctl --stream-to - | nc <host> <port>), and this works, but it feels redundant when ...
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dummy_hcd loopback webcam. Impossible?

I've been trying to create a loopback USB Webcam device with the help of dummy_hcd kernel module on my Raspberry PI 2B. Steps I've taken: I load libcomposite via modprobe libcomposite. Then I load ...
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How to take picture with Gstreamer with camera locally connected

I'm able to view video from my connected camera with Gstreamer fine with: # media-ctl -d /dev/media0 -l "'rzg2l_csi2 10830400.csi2':1 -> 'CRU output':0 [1]" # media-ctl -d /dev/media0 -V &...
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Webcam not working

My USB Webcam was working about a week ago, before I updated from 5.13 to 5.16. After the update my USB Webcam is no longer working. I don't know what I did.
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V4L2 Webcam has weird colours in Motion stream, normal on VLC

I've set up a webcam stream with Motion to use with Octoprint on my Raspberry Pi 4 (Raspbian 10). With my main webcam (Logitech C270) it works well as expected. I was testing to see if I could use a ...
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WebCamoid Chorma-Key Green Screen Background Image Settings

Can somebody please provide directions on HOW to set up WebCamoid to use a ChromaKey Green Screen to add a virtual background to my virtual camera? I have WebCamoid installed on MacOS Mojave 10.14 but ...
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Cheese (Camera) is not working in Ubuntu 20.04 on my Corei7 11th Gen(Lenovo Thinkbook)

My camera was working properly yesterday, but all of sudden it stopped working next day. I can only see the black screen as below: My system details are: I've tried all the other solutions like ...
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How to know the V4L2 camera's exposure time in ms?

with v4l2-ctl, one can know camera-parameters with following: $ v4l2-ctl -d2 --list-ctrls brightness 0x00980900 (int) : min=0 max=255 step=1 default=128 value=128 ...
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Webcam is showing all black on Debian 11.1

I have just installed Debian 11.1, after using Ubuntu for a long time on this computer. There is an issue with the webcam, when i turn on Cheese i have about 0.1 seconds of an image, and then the ...
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Logitech c920e -- v4l2-ctl --list-devices\ Cannot open device /dev/video0, exiting

just bought the logi c920e and unfortunately it does not appears to be working. None of the other users questions have helped, most were related to a built in camm which is not my case. I have tested ...
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What is the "Integrated I" camera on Lenovo Thinkpad laptop?

My laptop (Lenovo ThinkPad T490s, Ubuntu 20.04) shows 2 different cameras for the integrated cameras: [ 12.274248] uvcvideo: Found UVC 1.50 device Integrated Camera (13d3:56ba) [ 12.285342] input: ...
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Udev: Auto-Configuring webcam rule fires but doesn't work when plugging in. But works when calling "udevadm trigger"

Okay, I'm at a complete loss: I'm trying to auto-configure my webcam. When running "udevadm trigger" while the device is already plugged in everything works and the cam is configured. But ...
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Failure in recognizing and using a firewire camera

I am facing some difficulties in trying to use a microscope camera (olympus XC50) on my Arch Linux system. $ dvgrab Error: no camera exists $ ffmpeg -f iec61883 -i auto [iec61883 @ 0x558ade5499c0] No ...
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Acer Monitor - Webcam not working

I have an Acer B277 monitor with an integrated webcam. Even after connecting the HDMI cable, the webcam refuses to work. I dont see any separate drivers available from the Acer website for this. How ...
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Motion will not use the commands I give it in the camera .conf files

I tried to configure motion to run multiple cameras. I edited the .conf files for each camera then edited the motion.conf file to supposedly recognize the camera.conf files. When I start up, motion ...
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Allied Vision camera V4L2 drivers for linux

I've got USB camera (Allied Vision Mako Mako U-130B). lsusb -v output (abbrev.): idVendor 0x1ab2 Allied Vision idProduct 0x0001 Vision device iProduct 3 Mako Mako U-...
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How can I find the usb devices camera?

I am begginer in LINUX, sorry if my question isn't the best. I have a c++ app that uses OpenCV lib. This app runs at startup via a service(using systemctl). My app needs as arguments, the id of usb ...
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v4l2loopback + FakeCam works, but stuck while web-browser is trying to access original webcam device as default

The v4l2loopback device with FakeCam app works, but it gets stuck while web-browser is trying to access original webcam device as default. One any application (f.e. Web-Browser) is listing video-...
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How can I change the resolution of Iriun 4K Webcam to 1080p on linux?

I would like to change the resolution of iriun 4K webcam to 1080p on Arch Linux. My phone supports upto 4K It shows resolutions upto 4K but does not change it remains 640x480.
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Dell Vostro 320 Camera not working in Zorin 16

I have a Dell vostro 320 and installed Zorin 16 on it. all running well except the camera. here is how the terminal commands looks. :~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root ...
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Webcam switching error in Zoom

I have a Lenovo laptop with an internal webcam running Arch Linux. I also use an external USB webcam which is supported by the Linux kernel. When I launch Zoom, it first uses my internal webcam as the ...
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Cannot access photos on Redmi Note 7 in Shotwell nor Digikam

I have a Lenovo Thinkpad X1 Tablet running Ubuntu 20.04. When I plug in an Android Redmi Note 7 and enable "Transfer Photos (PTP)" I can see the photos on the phone in my file browser but ...
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Setting up Blackfly USB external camera

I'm trying to connect the Blackfly S USB camera to my Linux device running Arch, however it doesn't appear to be recognized as a video device. Here's the output of dmesg: $ dmesg | tail ... [46632....
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Webcam stopped working after updating Arch Linux

I updated 2 days ago and my webcam stopped working. The following softwares do not detect my built-in webcam: Zoom Discord Chromium /dev/video is not present. /dev/video0 is not present. The camera ...
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How to mount a SD Card which was formatted with exfat by a Lumix G9 camera?

The SD card was formatted by a Panasonic Lumix G9. mount /dev/sde1 /mnt/sd/ -t exfat ls -1 /mnt/sd/DCIM/ 100_PANA 101_PANA The pictures in 100_PANA are displayed in the camera, but the mounted ...
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/dev/video permissions Arch Linux (Remmina using FreeRDP)

I am trying to redirect USB through Remmina to an RDP session (FreeRDP on Linux). Access to the usb camera works just fine when I run Remmina as root, which is not an ideal scenario for obvious ...
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Disable some pixel formats for camera using uvcvideo

For some reason, my current camera is not working correctly and now only the pixel format YUYV works. This works, however, if I don't use this format, guvcview will not work: guvcview --format=yuyv ...
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How do I remove a manually added webcam entry?

I'm using Manjaro, and my system information is given below: OS: Manjaro Linux x86_64 Host: HP Pavilion Notebook Kernel: 5.10.42-1-MANJARO Uptime: 18 hours, 2 mins Packages: 1586 (pacman), 11 (snap)...
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How to display video stream captured from rasbperry pi camera on an external website hosted on CentOS server?

I am trying to capture video stream using raspberry pi camera and display it on a web page hosted on a CentOS server. This is what I have tried: On the CentOS server, I am listening using: nc -l (port ...
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Use external USB webcam instead of webcam on ubuntu 20.04 machine

I am trying to get an external USB webcam to work on my machine. But all applications use the default webcam on the machine and don't show multiple cameras to choose from. Don't give answers like ...
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Telegram Desktop without video call

I installed Telegram Desktop for Linux from the .tar.xz file in my Xubuntu PC. Everything works fine, but I do not find the way to perform video calls—actually the video call button with the camera ...
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Mirrorless camera as webcam - Sony A5100 & ElGato Camlink 4K

I am trying to get my Sony A5100 working as a webcam on Linux, specifically Fedora 32 on the 5.11.22-100.fc32.x86_64 kernel. Likely time to upgrade, but I figured I'd query here a bit first to see if ...
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Webcam not recognized on Debian 11/sid

My webcam is there, physically, but it is not recognized anywhere in my computer. The only place I see anything related to video is in # dmesg | grep video: [ 64.907469] videodev: Linux video ...
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No sound from cam mic, until I change and change back

These are my OS specs: kernel: 5.4.0-72-generic x86_64 bits: 64 distribution: Cinnamon 4.6.7 Linux Mint 20 Ulyana And this is how the system recognizes my webcam: ARC International Camera USB driver:...
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In-built laptop camera and mic don't work, are universal drivers available?

I am using the Eve 5 2-in-1 laptop from a small enthusiasts manufacturer. The device came with windows installed and the in-built camera and microphone work with this OS. But more often I use the ...
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I have a webcam (041e:401e) with Linux kernel 5.12.5; is the webcam obsolete?

uname -r: 5.12.5-arch1-1 lsusb -s 001:007: Bus 001 Device 007: ID 041e:401e Creative Technology, Ltd Webcam NX Pro Yesterday my Zoom app recognized my camera but not today. Noticed /dev/video* not ...
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v4l-utils for CentOS Stream 8?

I have problems with webcam and I need v4l-utils package. As per this page: https://centos.pkgs.org/7/centos-x86_64/v4l-utils-0.9.5-4.el7.x86_64.rpm.html It was availbel in CentOS 7 official repos. ...
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Cheese screen black with good webcam under CentOS Stream

I have a webcam that works like a charm when connected to Ubuntu 20.04 LTS: $ uname -r 5.11.0-7614-generic $ sudo hwinfo | less ... 24: USB 00.0: 0000 Unclassified device [Created at usb.122] ...
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watching cctv footage without internet explorer

long story short, i wanna set up ip cameras around my home. all methods i've found seems to be accessing footage (on microSD in camera) via internet explorer (hikvision cams). i wanna have it on ...
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USB camera not working, recognized as keyboard

Plugging in a USB UVC camera is being detected, but recognized as a keyboard, on a laptop running Fedora 34. cheese does not see this camera as an input device, only the built-in webcam. How can I get ...
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