The tag has no wiki summary.

learn more… | top users | synonyms (1)

1
vote
0answers
13 views

Replace webcam transmission with an image from the hard drive

I'm working with an Android app installed in my Arch Linux using the emulator Genymotion. This app is not mine and I have not access to the source code, I'm just working with it. In some part of the ...
1
vote
0answers
17 views

release/close capture of camera

I have opened webcam for capturing using OpenCV in C++. Then I stopped the program using CTRL+Z; The webcam could not turn off, Because was not defined in program. And I can not start my program ...
1
vote
0answers
15 views

Uvcvideo trying to load a camera twice

I've got a problem with uvcvideo, where I get this error at startup: uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 1: -32 (exp. 1). which also shows up in dmesg if you unload and load ...
1
vote
1answer
42 views

IP Camera with embedded Linux

I have purchased an IP Camera from Ebay (http://www.ebay.com/itm/151349669865). When I read the description of the camera, it said it has an embedded linux in it. I though that I will be able to ...
1
vote
0answers
25 views

Centos web camera, fast application for snapshot?

I'm using ffmpeg for taking snapshots / still images with web cameras. I'm going to use several web cameras to take photos at the same time or one after the other (timelapse). It's important for me ...
1
vote
0answers
58 views

Chroma key (green screen) live for a webcam?

Is there a way to apply chroma key live to a stream that's used in video conferencing. Webcam works fine though v4l (Cheese, Ekiga). This but in Linux.
0
votes
0answers
74 views

How can I mount the Logitech C270 in the zynq-7000 (with Linaro linux)?

I am doing camera control programming for a university project using zynq 7000. I want to mount the camera module that's for the Logitech C270 (like this ...
1
vote
0answers
13 views

How do you determine the capabilities of a WebCam?

I have a collection of WebCam's lying around. Some of them are new, some go back a decade (gotta love not having to "upgrade" devices in Linux :). Somehow I've developed the impression that ...
2
votes
1answer
47 views

How to create dummy webcam?

I would like to join some videoconference, but I don't own a webcam and the conference software requires one. So my question is, can I create a dummy one? I don't care what the cam will cast, I just ...
2
votes
0answers
82 views

Motion command images are jibberish

It seems my motion command config will not take complete pictures. It used to take a few tiny ok images, and a garbled image, now after adjusting it to full resolution it takes a large image of ...
4
votes
1answer
68 views

Camera to check if I'm watching the computer?

Is there a program to do following: I have a webcam on my laptop. I would like that my computer starts a screensaver if I'm not watching my laptop and stop the saver when I'm watching the screen. Is ...
1
vote
1answer
66 views

How do I send RTSP video to a program that reads from a character device?

I have an IP-CAM that streams video over RTSP and I want to detect bar codes from it with zbarcam (from Ubuntu's zbar-tools package). According zbarcam's manual, it expects to be given a video4linux ...
5
votes
1answer
109 views

How can I get this proprietary low-vision camera working in Linux?

I am a visually impaired Computer Science student, and use a special USB camera to zoom in on the board/projector during lectures. The camera only officially supports Windows, and I've been using it ...
0
votes
0answers
99 views

Activate iSight in Linux Mint Qiana on a Virtual Machine

I'm trying to get the built-in iSight cam of my MacBook Pro 5,1 (running OS X 10.5.8 ) to run under the just-downloaded Linux Mint Qiana edition, which I have installed in Virtual Box (v.4.1.18, for ...
1
vote
0answers
210 views

How to record vfl webcam with ffmpeg? Cannot find a proper format for codec 'none'

Goal is to capture video from my old usb webcam (device 0733:0430). Trying to save video gives this error. (I've tried both ffmpeg and avconv.) Command ffmpeg -f v4l2 -i /dev/video2 -s 160x120 ...
2
votes
0answers
94 views

Building a Security System using Raspberry Pi [closed]

I have a spare USB webcam at home and I plan to order a Raspberry Pi Model B which will capture video and stream it live. This will be my first time handling a Raspberry Pi. Before oredring the ...
1
vote
0answers
143 views

cheese doesnt work in beagleboneblack installed with angstrom, using chipsee LCD

I am using chipsee LCD + beaglebone black and Logitech Webcam C270. I am using angstrome OS distribution provided by Chipsee. I wanted to use Cheese and see if webcam works fine or not. When i open ...
0
votes
0answers
48 views

Driverless Windows webcam supported by UVC under 3.10 kernel?

There are 'driverless' webcam that plug into Windows 7 and will work directly without driver, in same way as USB finger disk, just plug in and work automatically. Is it true that the mechanism works ...
0
votes
1answer
1k views

Raspberry Pi webcam server streaming via an IP?

I developed one webcam server using my Raspberry Pi and Logitech webcam and Motion library. I'm able to view the stream by using Raspberry Pi's IP. If I use an IP camera instead of a normal webcam, ...
0
votes
0answers
95 views

not able to access raspberry pi webcam server from chrome and ie9

I am trying to use my raspberry pi as a webcam server(using motion library). After tweaking I found this tutorial and implemented the same. I am able to access the webcam data using firefox. from ...
0
votes
1answer
89 views

Two Linux Mint 16 systems Skyping--one can see both parties on webcam, the other can see neither

I installed Linux Mint 16 32-bit edition on my netbook and a friend's laptop. When we Skype, I can see her live image, and I can see my own live image, so everything looks and sounds right on my end. ...
0
votes
0answers
137 views

fix webcam problem by changing its file in /dev/

At Ubuntu-Gnome 13.10, My webcam can be accessed by cheese; Also Skype determined the webcam, But it does not show any output for webcam at options window (Webcam also doesn't turn on). Skype ...
1
vote
2answers
234 views

Debian Wheezy vs Logitech Quickcam E2500

I've a bought a QBox-1000, I've installed Wheezy, and some services (SSH, Samba, Transmission, etc). Now I would like to step on a next level. I want to know what is what and how to do some advanced ...
0
votes
0answers
129 views

Grab from a webcam

On Linux it is easy to use an audio or video grabbing device as input to FFmpeg: ffmpeg -f oss -i /dev/dsp -f video4linux2 -i /dev/video0 out.flv Today someone in kirupa forums said they ...
0
votes
0answers
86 views

How can I use codecs etc. from one file to encode another with avconv?

I'm trying to use my camcorder as a portable TV, so I would like to use files from the camcorder (a Sony Handycam HDR-CX280) to encode my other video files in a format it will play. Here's the output ...
1
vote
1answer
314 views

dark image in Skype but without a problem in other apps

I've just moved to Linux Family. I installed Elementary OS 64bit (based on Ubuntu). I try to configure my Skype, but the video image is really dark. It is working, but it is low in contrast. I've ...
2
votes
1answer
287 views

How to copy files *to* a camera?

I'd like to copy a firmware update file to my Canon 7D camera. After it was auto-mounted by thunar + thunar-volman + gvfs-gphoto2 I tried the following: $ cp eos7d-v205-win/7D000205.FIR ...
2
votes
1answer
535 views

Understanding webcam 's Linux device drivers

As far as I know, device driver is a part of SW that is able to communicate with a particular type of device that is attached to a computer. In case of a USB webcam, the responsible driver is UVC ...
0
votes
3answers
73 views

How does one install a camera driver from a c file, and what is this driver doing?

I need to install a driver for a MT9M032 CMOS Image Sensor USB machine vision camera made by Aptina (formerly Micron). I am working on a Macintosh running OS X 10.9.1 and am new to Linux/Unix when it ...
3
votes
1answer
2k views

How do I find out which process is using my V4L2 webcam?

I tried to run the following: $ vlc -I dummy v4l2:///dev/video0 --video-filter scene --no-audio --scene-path webcam.png --scene-prefix image_prefix --scene-format png vlc://quit --run-time=1 ...
1
vote
1answer
558 views

Trying to make my default selection for USB c920 webcam work in Gstreamer, but still opens laptop internal cam

For the past week I have been trying to get my Logitech c920 to act as my default webcam. Despite everything seeming to be in order, it's just not working. I have GUVCview and V4L installed. I have ...
2
votes
1answer
738 views

Capture raw image from V4L (webcam) device

I'm using a Raspberry pi to monitor a self-service fridge. When the door opens, a shell script is being executed to capture pictures until the door closes again. The problem, however, is the speed of ...
0
votes
1answer
294 views

Capturing image from webcam

I want to capture a image through webcam in Linux. So I searched on the Internet and found out it's can be done using mplayer or vlc. Following is the command for capturing image by mplayer and its ...
2
votes
1answer
891 views

Connection error for linux webcam driver for matlab

This might seem like a duplicate post, well yes it is, but I have a different problem compared with the duplicate version of it. My value for imaqhwinfo gives me: InstalledAdaptors: {'dcam' ...
2
votes
1answer
668 views

ffmpeg webcam to device driver , output 8 bit grayscale

With the following command i'm trying to capture 10fps and send them the device driver. Now i want 8 bit gray raw frames (640x480= 307200 bytes per frame) to be send to the device driver. I can't ...
1
vote
1answer
181 views

Connecting a wireless webcam and wireless dongle

I must create a wireless connection between a USB wireless dongle (DLink wireless-N USB Mini Adapter DWA-140) and a wireless webcam (DLink DCS-932L). I.e. point to point connection without Internet. ...
1
vote
1answer
797 views

Recording a webcam using ffmpeg

I'm struggling with ffmpeg. My webcam can do 720p at 30fps, but only when using the MJPEG codec: ~> v4l2-ctl --list-formats-ext ioctl: VIDIOC_ENUM_FMT Index : 0 Type : ...
1
vote
0answers
650 views

uvcvideo - No space left on device

I'm trying to setup a camera (Swann ADW-200 wireless) in Zoneminder but having difficulties. Even when the camera is the only USB device hooked into the server it still errors with bandwidth problems ...
0
votes
1answer
475 views

Webcam on Openbsd

# dmesg ... uaudio0 at uhub1 port 2 configuration 1 interface 1 "vendor 0x093a product 0x2622" rev 1.10/1.00 addr 2 uaudio0: audio rev 1.00, 2 mixer controls audio1 at uaudio0 ugen0 at uhub1 port 2 ...
1
vote
0answers
317 views

Microsoft LifeCam VX-800 stopped working on Linux Mint

My Microsoft Lifecam VX-800 stopped working without any plausible reason. lsusb identifies the camera with the name "Z-Star Microelectronics Corp. Venus USB2.0 Camera". Another unusual thing is that ...
2
votes
0answers
193 views

Webcam Device Driver to support H.264

I have a Creative Live Cam Connect HD (id: 041e:4093) and this webcam has an on-board H.264 encoder. Unfortunately v4l2 only inputs the feed as MJPG. $ v4l2-ctl --list-formats ioctl: VIDIOC_ENUM_FMT ...
6
votes
1answer
2k views

Skype webcam upside down but v4l1compat missing

I am running Linux Mint, but i think this issue will be mutual with Ubuntu. My webcam in Skype is upside down (in Cheese it's ok). There are a lot of topics dealing with this coming up with fix like ...
6
votes
2answers
5k views

Trouble getting VLC to record from the webcam via command line

my ~/.bashrc contains the following function webcamrecord () { vlc v4l2:// :v4l-vdev="/dev/video0" :v4l-adev="/dev/audio2" :v4l-norm=3 :v4l-frequency=-1 :v4l-caching=300 :v4l-chroma="" ...
4
votes
2answers
1k views

Getting linux webcam state via command line or API

I would, preferably, like to know of a command I can run that will let me know whether a webcam is on/off or recording/not recording, etc. Maybe a way to see if any programs are currently accessing it ...
2
votes
1answer
190 views

How to record a flash movie from a live cam on the Internet?

I am watching some webcams live from the Internet, showing some big cities around the world. I'd like to record some to show to my friends at home. Is it possible?
3
votes
2answers
430 views

Mounting USB camera on Ubuntu

I am quite new at Linux and I have to install this SwissRanger camera on Ubuntu. I am trying to follow their USB mounting instructions and I got stuck. From the instructions: Modify the usbdevfs ...
1
vote
1answer
366 views

Camera capture is too slow

I had being conducting some experimentation with my Beagleboard and camera. The camera was working perfectly well initially. Later I extended my experiments by disabling the 'auto-exposure' and ...
3
votes
2answers
1k views

Capture and broadcast video from web cam

I have server on Debian 6, without Desktop Environment and I have simple web camera. Web camera is defined like /dev/video0, so I can use cat /dev/video0 > ~/photo to get image from it (of course ...
2
votes
1answer
2k views

Getting webcam to work in Raspberry Pi

I am trying to get a HAMA webcam to work with my raspberry pi with the raspbian os. When I type usb-devices I get: pi@raspberrypi ~ $ usb-devices T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 ...
10
votes
2answers
853 views

Deny flash plugin access to (a particular) webcam

I recently bought an external webcam to play around with OpenCV. It works great out of the box in Debian, but I realized that when I browse any site that contain flash content (youtube, soundcloud), ...