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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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Webcam on dell XPS 13 not working

I am running Ubuntu 22.04.4 on a dell XPS 13 9315 and suddenly started having issues with my webcam. The camera does not seem to turn on and just shows black in each application I try (chrome, cheese, ...
Ben C's user avatar
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0 answers
41 views

i cant open camera file

I got a camera not too long ago, and when I connect it to my computer, all I get is this file. (I use a USB cord I bought off amazon). sI don't know how to screenshot, so apologies for lack of ...
oddkam33's user avatar
1 vote
0 answers
320 views

How to get proper ffplay output with UVC camera?

My end goal is to use a UVC webcam with esp32 or Raspberry PI. I was hoping to learn while doing some fun projects. I have an old UVC webcam (Creative model ct6840) but I can't seem to get it to work ...
Abdulla Masud's user avatar
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0 answers
27 views

Is there any AI program to auto adjust brightness, contrast, gamma values of camera according to environment lighting? like smartphones do

In smartphones, one can see how quickly it identifies faces and adjusts brightness, colour saturation and all other settings. Similarly, I am looking for some applications for Linux. Till now, I found ...
Amit's user avatar
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0 votes
0 answers
32 views

What BTRFS mount options to use for long running streaming writes (like cameras)

Background I have a NAS setup that's streaming camera data directly to disk on a file-an-hour rotation, then a job setup at the start of the day to concatenate the 24 files into a day file that is ...
WesAtWork's user avatar
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0 answers
172 views

Chuwi Ubook X 2023 - ipu3-csi2 Webcams not working in ubuntu and debian

I have bought the CHUWI Ubook X 2023 and as every reasonable person, the first thing I tried is installing linux on it. As explained in other threads Linux on the Ubook main problems are graphic ...
Rattata 2me's user avatar
1 vote
1 answer
51 views

Is there a desktop icon to indicate whether or not the webcam is enabled on Pop!_OS and, if so, how do I enable it?

I recently purchased Adder WS with Pop!_OS 22.04 LTS. On this machine, there is a hot-key to enable/disable the webcam: Fn-F10. If I press this key sequence inadvertently, I do not know if the ...
AWM's user avatar
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0 answers
39 views

mic boost for kazer kiyo?

I'm setting a new webcam, a razer kiyo, and I'm having some trouble with the microphone. It works, but it's really quiet. The "mic boost" option in alsamixer would seem to be a good choice, ...
jyoung's user avatar
  • 111
0 votes
0 answers
542 views

Integerated Webcam not working in Debian 12

I moved to Debian 12 from Linux Mint last year, recently I noticed that my laptop's integrated webcam isn't working. It was working fine in Linux Mint. Debian isn't detecting integrated webcam. ...
Acode's user avatar
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0 votes
0 answers
41 views

Cannot start link in /dev with LD_PRELOAD and ffmpeg

I successfully start ffmpeg on my old webcam with: ssh my_host "LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libv4l/v4l2convert.so ffmpeg -f video4linux2 -i /dev/video0 -f matroska -" | mplayer - -...
klpu39's user avatar
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0 votes
1 answer
104 views

How can install and load mods related to videodev and others?

Same hardware,two debian-11.7 installed in the same pc ,one is on /dev/sda1,other is on /dev/ada2. For the debian on /dev/sda1: uname -a Linux debian 5.10.0-22-amd64 #1 SMP Debian 5.10.178-3 (2023-04-...
showkey's user avatar
  • 415
0 votes
0 answers
163 views

V4L buffer doesn't get cleaned properly

I've been trying to write a c program to capture photos from a uvc camera using v4l. I've managed to gt it to work for the most part but every second time i run the program i get a zero-filled yuv ...
Hristos's user avatar
0 votes
0 answers
108 views

Webcam keeps on disconnecting and reconnecting

I am on Debian unstable with swaywm. I could also reproduce the same issue on i3. On running sudo dmesg after launching cheese, I get this. After the initial run, cheese straightaway goes into a dark ...
Arcadio's user avatar
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0 answers
903 views

Integrated webcam /dev/video0 sends no data

The integrated webcam on my machine is detected (/dev/video0 exists and the webcam led turns on when an client app starts using it (e.g. cheese, ffplay etc). Most application sends errors about the ...
ymentha14's user avatar
  • 101
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0 answers
88 views

How to zoom a webcam in KDE Plasma 5 on openSUSE Tumbleweed?

I have a Schenker XMG U706 notebook which has a BisonCam NB Pro cam in it. I remember when having used Zoom (What a coincidende in naming! :) under (dual boot) Windows I could zoom in/out the video. ...
Gerold Broser's user avatar
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0 answers
138 views

Webcam showing image with circular artifacts

What could have caused the issue where the built-in webcam in my laptop captures a video stream with weird graphical artifacts? These artifacts randomly appear or disappear for some period without any ...
enoted's user avatar
  • 101
6 votes
2 answers
3k views

Why would `lsof /dev/video0` be insufficient to check what processes are using the camera?

A question about this command from half a decade ago claims that lsof does not monitor all the processes using cam. But when I ran the command while running testcam I got: COMMAND PID USER FD ...
Lax's user avatar
  • 69
1 vote
1 answer
171 views

How to recover VOB video files in camcoder dvd with udf filesystem which appears empty but it's not

I recently discovered some old double-sided mini dvd-rw disks (2.8GB) which were used for recording video with a Sony DCR-DVD201E handycam. Both sides already had content but they were unfinalized so ...
Kostas Filios's user avatar
1 vote
2 answers
1k views

How can I persist the modified V4L2 (Guvcview) profile of a webcam?

I have a USB web camera that gives suboptimal results when I plug it in (Linux seems to apply its own V4L2 settings to it that it thinks are best, they are not). Mainly, it operates at a low FPS. But ...
ostrich's user avatar
  • 11
1 vote
1 answer
298 views

Hello windows camera as a web camera on Linux | Philips 272s1mh/00

I recently bought a Philips 272s1mh/00 27" monitor with the idea of using it as an additional monitor for my work HP laptop with Windows 11 pro and at the same time for my Dell Vostro laptop with ...
baka.strumpf's user avatar
0 votes
0 answers
627 views

Integrated camera stopped working/being detected on Debian 11 Lenovo thinkpad 4th gen

I have a lenovo thinkpad X1 carbon 4th gen that was working fine for several years, on Debian 11, but the integrated camera suddenly stopped working. It is enabled in the bios, just not detected ...
A.Bal's user avatar
  • 1
0 votes
0 answers
61 views

So, what issue i have is my camera is connected but its not showing when i do lsusb and I really don't get what is the issue

ase) caiedge@caiedge-Precision-3650-Tower:~$ dmesg | grep usb [ 0.819578] usbcore: registered new interface driver usbfs [ 0.819578] usbcore: registered new interface driver hub [ 0.819578] ...
Awadhesh Pratap Singh's user avatar
0 votes
0 answers
77 views

How many webcam devices in my os?

I have only one usb-camera device connected to my pc. lsusb Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device ...
newview's user avatar
  • 205
1 vote
1 answer
275 views

How can I flash an embedded device with new linux software?

I have this IP camera that I bought that's really pretty shady (it streams all the videos to some S3 bucket and forces me to use their software), but I'm pretty sure it runs embedded linux and I'm ...
DAB's user avatar
  • 475
2 votes
0 answers
364 views

Webcam's power line frequency setting does not take effect if a new application that uses it is open

I am living in Europe and I have bought a Logitech C920 webcam whose power line frequency setting should be changed to 50Hz in order to avoid flickering. I did it using the following instruction: /usr/...
Roberto Fernández Iglesias's user avatar
0 votes
0 answers
2k views

Integrated webcam not working Ubuntu 22.04 getting error uvcvideo 1-6:1.1: Failed to resubmit video URB (-19)

It is a lenovo ideapad dual boot system with Ubuntu and Kali. Webcam is not accessible, it is showing blank, the light blips and goes off. Tried it with Cheese, browsers, guvcview, zoom and teams. It ...
noob's user avatar
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0 votes
0 answers
252 views

Webcam not working properly (wrong resolution)

Since a while, I haven't been able to get the correct resolution of my laptop's integrated webcam. The laptop model is a Thinkpad T495, I'm using Debian testing, and the kernel is 6.0.0-2-amd64. The ...
CGH's user avatar
  • 1
4 votes
2 answers
1k views

Disable webcam at boot time, by appending a boot parameter

I have an internal webcam on my Dell laptop. I don't see it listed with lspci, but it works. I am using a self-compiled kernel, and here are the options I have enabled: # zcat /proc/config.gz | grep -...
Martin Vegter's user avatar
0 votes
1 answer
2k views

integrated camera not detected/working on Acer Nitro 5 AN515-58

The integrated camera is not detected/working. Cheese says No device found. Guvcview says Guvcview error no video device (/dev/video0) found I have dual boot with Windows 10 and the camera works ...
sandrino's user avatar
1 vote
0 answers
35 views

How to make Camera Image blank on Linux Fedora While used

Hello this is probably crazy question, my aim is to disable the video capture after I press a button and run script, and it already works, the problem is it only works when the camera isn't used. If ...
Benyamin Limanto's user avatar
1 vote
1 answer
2k views

My camera is being detected as a generic USB device, but not as a camera - how do I force /dev/videoX to be created?

EDIT: I added some additional information from sudo lsusb and sudo dmesg as recommended by telcoM below. I have one camera that works and a similar camera from the same manufacturer that doesn't work ...
James Duvall's user avatar
1 vote
1 answer
221 views

Built in Camera Not Detected Lenovo P14 AMD

I am using Garuda Linux with Qtile Window Manager on a Lenovo P14 AMD laptop and cannot get the built in camera to function. I have tried Cheese and various websites(Jitsi, Google Hangouts etc) and it ...
Dixan's user avatar
  • 11
3 votes
1 answer
608 views

How to disable the microphone of a Logitech BRIO webcam under Linux?

I have a Logitech BRIO webcam, which has a microphone that I never use. To avoid confusion, I would like to disable it on the lowest possible level. Can I somehow tell Linux to never load the driver ...
Bengt's user avatar
  • 751
0 votes
1 answer
192 views

Can "v4l2loopback" be installed/compiled for FreeBSD 13.1?

Wondering if anyone was able to compile v4l2loopback for FreeBSD 13.1 If so what are the steps. I need it for FFMPEG to convert a live USB cam MJPEG video stream from yuv422 to yuv420 on the fly and ...
Max Dax's user avatar
  • 61
1 vote
0 answers
739 views

HP TrueVision HD Camera - Cheese show black screen

I have a HP laptop with Ubuntu 22.04 with a built in Truevision camera. When running cheesethe LED indicator next to camera lights up but the screen is black. The buttons in cheese is disabled. ...
hschou's user avatar
  • 2,922
0 votes
1 answer
254 views

Qubes OS does not see the laptop camera

Qubes Devices does not see the camera, only the microphone. If I type lsusb the camera is visible: Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 Root Hub Bus 003 Device 003: ID 1358:c123 ...
Алекс Шевцов's user avatar
0 votes
1 answer
335 views

Is my webcam hacked?

Linux (ubuntu) user here. I have been using Linux for a long time, which makes me comfortable with the command line. So, I am looking for suggestions and tools to help me solve this problem. In case ...
def anonymous's user avatar
5 votes
0 answers
2k views

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. ...
Ink blot's user avatar
  • 203
1 vote
0 answers
1k views

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 ...
André Campos Rodovalho's user avatar
0 votes
2 answers
768 views

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....
Garid Z.'s user avatar
  • 552
0 votes
3 answers
13k views

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 ...
DanielePP's user avatar
1 vote
1 answer
2k views

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 ] ...
DanielePP's user avatar
1 vote
0 answers
964 views

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 ...
Sulphur's user avatar
  • 111
2 votes
1 answer
2k views

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 ...
Philippos's user avatar
  • 13.5k
3 votes
0 answers
2k views

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 ...
Alex's user avatar
  • 131
1 vote
1 answer
209 views

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 ...
winwin's user avatar
  • 145
1 vote
0 answers
541 views

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.
Pizzarules668's user avatar
0 votes
1 answer
365 views

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 ...
Nouvilas's user avatar
0 votes
1 answer
689 views

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 ...
Marion Lee's user avatar
0 votes
0 answers
2k views

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 ...
Faheem's user avatar
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