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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gphoto2 differentiate two cameras of same model

gphoto2 command requires usb port in a notation like this --port usb:002,003. I found that you can create symlink to usb device /dev/camera0 -> /dev/ttyUSB0 as described here. But gphoto2 doesn't ...
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Prevent Metadata webcam device to be enumerated

When I attach a webcam two new devices are enumerated: /dev/video0 /dev/video1 The second one is a metadata device regarding the settings of the cam. I now have a custom udev rule to make symlinks ...
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Getting the `/dev/video*` file path for a specific webcam?

Right now I have several camera paths on my system: /dev$ find . -name "video*"./video1 ./video0 ./video4 ./video2 I happen to know that my HTC Vive's web camera (located on the front of the VR ...
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Broadcast Camera stream over 5G Wifi network to multicast address using FFMpeg

I am trying to stream my Intel RealSense D435 RGB camera input to a multicast address on my network. Please note, video streaming, encoding, is very new to me - I do not understand much, when ...
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USB not working on Ubuntu

The USB ports in my notebook don't work for my kindle and my pendriver. Although they work with my cellphone. I tried running fdisk -l and all the sdb partitions are missing. But if I run lsusb the ...
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51 views

disable microphone and camera for a user

Is there a simple way to denied access to camera and microphone to specific user? A solution using as shown here Disabling Web camera is not really suitable as other users need to renable-it via sudo ...
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25 views

How do I record video from my MacBook Air's webcam?

I recently installed Linux Mint on my MacBook Air, and I would like to record video from it's built in camera. It seems that the drivers are not installed, since guvcview gives an error when I try to ...
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What is an extremely lightweight way to detect change in an image?

I'm trying to find the most lightweight method to detect "adequate" change in an image. I realize that's a terrible constraint, so for the sake of this question I'll break it into two different ...
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Error after installing Shinobi on Linux Mint

I just installed Shinobi CE (https://gitlab.com/Shinobi-Systems/Shinobi) On my linuxmint machine. Everything got installed properly, i selected sqlite. I tried logging in (The log in screen shows up) ...
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What process is accessing this laptops webcam? Is it a rootkit?

Old laptop, running minecraft for the kids. Noticed the webcam light blinking for half a second randomly. Assumed it was a minecraft mod, nuked everything off and did a fresh Ubuntu install. Sure ...
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One physical device mounts two /dev/video devices; which will cause fswebcam to throw an ioctl error?

The presenting problem and symptoms: I've found that for each individual physical USB web camera I attach in Raspbian, a pair of such /dev/video devices is created. When I try to capture an image ...
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FFmpeg finish recording before than expected

I'm using the following command over a Raspberry Pi 3B+ running raspbian stretch to record video from a USB webcam with ffmpeg ffmpeg -loglevel quiet -re -use_wallclock_as_timestamps 1 -f v4l2 -s ...
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Several program web-camera issue

I have the Logitech C270 web-camera. I cant use it on Skype and OBS at the same time! If my Skype is running and I run OBS I see the green light on the camera. But, I do not see the picture on the ...
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Query the target device for installed PCI devices on ubuntu

Is there a way to query the target device for installed PCI devices on ubuntu. I use VideoCapture Card and 8 cameras. Every time /dev/video* changes but I would like to assign a camera to specific /...
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Which format my webcam produces

How can i find out which format (preffix) my USB webcam produces ? I want recording webcam to HDD with ffmpeg and i need save the capture record without reencoding because of CPU usage (i using ...
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63 views

Supporting new digital cameras Raw files on Linux

This is general question about digital camera raw files. I want to know which software is responsible for rendering the thumbnails. I have Fedora and have this file /usr/share/thumbnailers/ufraw....
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Why do some devices generate DRIVER==“” in udevadm info?

The goal was actually quite simple, I was trying to get a USB camera to work on Linux. After installing uvc, uv4l (bcm2835 kernel module I guess), it still doesn't work. Currently, I got the ...
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Webcam not detected on Spectre x360

The webcam of my Spectre x360 (13-ae025nf) is not well detected on Ubuntu 18.10 (kernel 4.18.0-21-generic): Skype finds four cameras "HP Wide Vision FHD Camera: HP I/W" (two are W, two I) but none ...
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Play two webcam feeds on top of each other in fullscreen mode

I'm looking for a linux app which I can configure to play on launch the feed of two connected webcams. The feed of webcam 1 should be fullscreen, while the second one should play in a specified ...
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Obtaining webcam images in rawest possible form?

My laptop is running Ubuntu. All of the applications that I have seen to capture from the webcam produce images that have been passed through brightness, hue and contrast adjustments. Is it possible ...
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241 views

What CCTV software is available for Debian?

Is there any good open source ip camera software out there? I have tried zoneminder but my computer isn't compatible, and shinobi seems to only be for CentOS, Unbuntu and others but not Debian and ...
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108 views

How to see laptop camera logs on Ubuntu

I would like to know if it is possible to discover when my laptop camera was used over the past 7 days. eg. Is there a log for that? I am running on a Ubuntu 18 machine.
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restrict access to the webcam to certain user/software on Ubuntu 16

I would like to restrict the access to the webcam only to certain programs/users. I use Ubuntu 16.04. If I am right my webcam is linked with /dev/video0 (just as an example), which is owned by root ...
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2k views

Multiple /dev/video for one physical device

First some specs: my computer is an HP EliteBook 8460p. It comes with an integrated Chicony HP HD webcam. My issue is that a lot of applications (well, at least Skype and guvcview) are displaying ...
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418 views

Get video device on embedded Linux SoC

I'm trying to find the camera module device of an IP camera (running Linux), without much success. My main objective is to find the camera stream, so I can attach an RTSP server. Update 26/02/2019 ...
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How to get IR camera to work on Linux?

I have an ASUS Q524UQK laptop with integrated Realtek IR camera and it doesn't work on Linux Ubuntu 16.04.5. I was looking on net for drivers but found nothing. lsusb and lspci outputs doesn't show ...
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43 views

Is someone spying me through my webcam?

I executed the following command in terminal and got the output: Command: lsmod | grep uvcvideo Output: uvcvideo 86016 0 videobuf2_vmalloc 16384 1 uvcvideo ...
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2k views

Create a virtual UVC device to stream video as webcam

I'm looking for a way to use a video file and stream it so it looks like it's a real UVC device. I did some research and I found uvc-gadget But I can't work out if this does what I am after. I have ...
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592 views

Cannot connect USB webcam to computer through KVM switch?

I recently purchased a KVM switch (this one) to allow me to use both my computers with one set of peripherals. The device works in all respects (including on my usb keyboard and mouse) except I ...
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How to interface dashcam with self storage with Pi?

Posted in Pi StachExchange, they suggested I ask here since it's more of a general Lunix question. I have an AutoVox A118 dashcam. It works as a dashcam should, but I want to add a Pi to my vehicle ...
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441 views

play 4 rtsp streams in fullscreen

I have 4 IP cameras in my network, and I need to play the 4 streams at once in a grid view, currently i execute this command: ffplay rtsp://10.1.10.123 for each IP and then I rearrange the windows,...
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1k views

Allow multiple programs to access the same V4L2 device

I'd like to be able to capture input from a webcam to to separate programs. One for VoIP, and one for capture. The problem is - Linux will allow only one process to access a V4L2 device, so once I ...
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3k views

How to manage the white balance in webcam

On Linux my webcam works fine, but when using artificial lighting the white-balance is too reddish. Color look fine with natural illumination. Is there a way to calibrate the colors or have some form ...
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385 views

webcam - xawtv & mplayer

Folks, I am running through a weird problem. I am running Debian stretch on my thinkpad t430. When I try to capture video using my integrated webcam, I am able to view a streaming video, if I xawtv -...
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Rotate webcam as well as screen (portrait mode)

TL;DR: Is it possible to rotate by 90 degrees the feed of a built-in screen webcam? I have 2 screen monitors, one in landscape and one in portrait mode. The webcam is on the "portrait" monitor, the "...
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3k views

Cheese: No device found

I am trying to connect and use a logitech camera in linux on a zedboard (4.9.0-xilinx-00034-g6629200-dirty). I have it connected to the USB OTG port and the kernel image is built from the xilinx ...
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412 views

Linux (Solus): trouble connecting USB camera (Apple iSight)

OK, this might be a bit of a long shot... I'm trying to get an Apple iSight camera to work in Linux (Solus Budgie). Not a built-in iSight, but the original 'old school' one, which connects with a ...
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5k views

Motion is taking an image every second even though it is setup not to

I am running motion on a Raspberry Pi with a surplus Microsoft Xbox camera. To the best of my knowlege I have set it up to only take an image every 30 minutes and to also create a daily timelapse with ...
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83 views

motion blue and black image on built in server - saved images are ok [closed]

I'm experimenting motion on my desktop, My webcam: Logitech, Inc. Webcam C270 Output Images and video are ok but the image on built in server aren't. They are like blue and black - almost ...
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114 views

Live capable highspeed camera for Linux?

I am tasked to set up a number of highspeed cameras on top of a foosball (? aka. table soccer ?) table to allow for slowmotion replay of interesting moves and goals. So far a test setup is ok by all ...
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1answer
426 views

Writing start script with different working directory

I installed octoprint to my raspberry pi earlier this year in order to control my 3d printers. I've been able to make the pi control 2 printers at once using octoprint. Also I've added a second ...
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1answer
625 views

How can I disable my internal webcam?

I recently bought a refurbished second hand Lenovo ThinkPad T530. It mostly works very well, but the internal webcam seems to have a problem, which sometimes causes the laptop not to boot on Linux (I'...
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852 views

Change global webcam settings from terminal

I need a simple script that can change my webcam settings. I want the changes to be applied globally, just like with guvcview. Most importantly, I want to be able to turn on the auto exposure setting. ...
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486 views

Uploading a webcam stream via ftp in realtime

So here's the situation. I'm trying to build a watching program for my linux box with an inbuilt webcam, that starts recording when motion is detected, and uploads the recording to my domain. Motion ...
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992 views

How to configure image size with gphoto2

I'm using gphoto2 with Lubuntu on a acer Aspire One and a Nikon D70s, all old stuff, but still usefull. But i have a problem when i try to take a picture from command line, because all the pictures i ...
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659 views

Built-in webcam not recognized

I have a Dell Inspiron 5547 (500 Series) running Debian Jessie 64 bits. My lsusb output is: Bus 001 Device 004: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller Bus 001 Device ...
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6k views

Camera not working on MacOS Sierra (and High Sierra)

After installing the last MacOS Sierra update, I lost my camera on Facetime and Skype, and in web apps; the name of the camera to be selected simply stops appearing on those apps, it is as if I do not ...
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402 views

Show Motion stream on multiple web page

I am running motion, and so far everything work nicely, I can access the stream on port 8081, without problem. Is there a way to show the stream of the same webcam on multiple port ? If yes, how ? I ...
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2k views

Turn on Webcam Device with Command

I have a problem about using webcam from terminal. My notebook is MSI GE60 2PC Apache, and my OS is Debian 8 Jessie. When I press FN+F6, my webcam turns on and I can use webcam with cheese ...
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Arch on Pogoplug running MJPG-streamer - How to disable LED on Logitech cam?

I put Arch Linux on a Pogoplug v2 POGO-E02. I got wifi working and installed MJPG-Streamer from the AUR via packer. The video stream is working fine, but as this is a security camera, I would like to ...