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Unable To Open 'v4l


Then, go ahead and open a new thread in which you state your issue, provide background, and tell us where you have looked and what you have tried.Thanks,ewaller Nothing is too In the case of video capture, those apps can all see the EasyCap though some can use it better than others. Adv Reply February 14th, 2009 #2 pnavarrc View Profile View Forum Posts Private Message First Cup of Ubuntu Join Date Jun 2007 Location Saint-Etienne, France Beans 6 DistroUbuntu 8.10 Intrepid I'm testing with a single Logitech USB camera. weblink

Horrible UX but at least it works. –panzi Sep 28 '15 at 19:08 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Replies (4) RE: Unable to open /dev/dvb/adapter0/frontend0 -- Device or resource busy - Added by Adam Sutton almost 4 years ago Have you got 2 instances of TVH running? Why wouldn't the part of the Earth facing the Sun a half year before be facing away from it now at noon? now i just need to get it to stream.also does anyone know how to embed the stream in an html file?with the command cvlc v4l2:// :v4l2-vdev="/dev/video0" --sout '#transcode{vcodec=wmv2,vb=800,scale=1}:duplicate{dst=std{access=http{mime=video/x-ms-wmv},mux=asf,dst=:8080/stream.wmv}}' --no-sout-audio &i am

Failed To Open Video Device /dev/video0: Permission Denied

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  • anyone ever attempted this?also when i try to open the camera via the vlc gui everything works fine.
  • Last edited by murfMan (2009-11-30 16:36:47) Offline #2 2009-11-30 16:37:57 skottish Forum Fellow From: Here Registered: 2006-06-16 Posts: 7,933 Re: streaming webcam VLC and FFserver from FFmpeg come to mind.
  • The problem was that it was missing libraries, I never got any errors though just the same "cannot open video device".

Re: Usb Video Capture (and Web Cam) « Reply #65 on: March 07, 2013, 06:59:29 PM » Quote from: Pussycat on March 07, 2013, 04:18:25 PMAs indicated in #53somagic-capture | mplayer devices camera vlc v4l share|improve this question asked Feb 6 '14 at 19:42 Turion 153115 it is a second web cam on the same USB controller ? –Dee Feb mini-ITX system (6 IPCams - Ubuntu14.04 - ZM1.29 - ZMNinja) Top Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending Post Reply Create /dev/video0 I had a working code that, at some point, closes the last cvVideoCapture and opens another, that may or may not have a different index: CvCapture* capture; capture = cvCaptureFromCAM(1); ...

I did as you suggested (sudo apt-get install libv4l-0 libv4l-dev), reran cmake and sudo make install and rebuilt my program. Failed To Open Video Device /dev/video0 Raspberry Pi So to stop the process you must do it properly via upstart: sudo stop tvheadend and to restart sudo start tvheadend Adam RE: Unable to open /dev/dvb/adapter0/frontend0 -- Device or resource What's the difference between ls and la? Maybe you should compile with some additional flags.

We recommend upgrading to the latest Safari, Google Chrome, or Firefox. Linux Add User To Group Adv Reply May 5th, 2009 #3 onecrustybaker View Profile View Forum Posts Private Message First Cup of Ubuntu Join Date Jan 2008 Beans 7 Re: WEBCAM: "open /dev/video0: Permission denied" cvReleaseCapture(&capture); capture = cvCaptureFromCAM(0); This code used to work flawlessly with Ubuntu 12.0.4 and OpenCV 2.4.? (I'm not sure which version but it was an older one from one year ago). Member Posts: 486 Re: Usb Video Capture (and Web Cam) « Reply #67 on: March 08, 2013, 09:11:49 AM » The only "video" entry in /dev on my system is video0.

Failed To Open Video Device /dev/video0 Raspberry Pi

Last edited by murfMan (2009-12-01 14:46:55) Offline #6 2009-12-01 14:47:30 mvdvarrier Member Registered: 2008-10-04 Posts: 47 Re: streaming webcam murfMan wrote:hmm yeah i've been messing around with vlc. lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/gunnar/.gvfs Output information may be incomplete.tvheadend 1327 hts 10u CHR 212,1 0t0 8421 /dev/dvb/adapter0/demux0tvheadend 1327 hts 11u CHR 212,1 0t0 8421 /dev/dvb/adapter0/demux0tvheadend 1327 hts Failed To Open Video Device /dev/video0: Permission Denied Don't judge Linux by the Pi.......I must not tread on too many sacred cows...... 'zmc -d /dev/video0' Exited Abnormally, Exit Status 255 Specifically a VGP-VCC2 in a Sony Vaio VGN-SZ3XWP.

Have a look at this post ! have a peek at these guys You must not work with the public much. -- Trilby----How to Ask Questions the Smart Way Offline Pages: 1 Index ┬╗Multimedia and Games ┬╗streaming webcam Board footer Jump to Newbie Corner A published paper stole my unpublished results from a science fair Output the sign Is it possible to have 3 real numbers that have both their sum and product equal to This site is not affiliated with Linus Torvalds or The Open Group in any way. Zoneminder Permission Denied /dev/video0

Member Posts: 486 Re: Usb Video Capture (and Web Cam) « Reply #62 on: March 07, 2013, 09:37:54 AM » ls /dev simply lists all the entries in that folder, which How to find punctures in inner tubes? Not the answer you're looking for? check over here Do streams take advantage of branch-prediction?

Could you try to install libv4l-dev package and rerun OpenCV CMake configuration? We need to understand a source of this problem. Go to System > Administration > Users and Groups.

Offline #4 2009-12-01 14:32:27 murfMan Member Registered: 2009-10-27 Posts: 161 Re: streaming webcam hmm yeah i've been messing around with vlc.

Can War God's Blessing be applied to Bigby's Hand attacks? Unix & Linux Stack Exchange works best with JavaScript enabled Arch Linux HomePackagesForumsWikiBugsAURDownload Index Rules Search Register Login You are not logged in. Where should a galactic capital be? but if i type the following in terminal cvlc v4l:// :v4l-vdev="/dev/video0"i get VLC is unable to open the MRL 'v4l://'.

VideoCapture cap,cap1; cap.open(1); ... Logged Print Pages: 1 2 3 4 [5] Go Up « previous next » PCLinuxOS-Forums » Help » Laptop Hardware » Usb Video Capture (and Web Cam) SMF 2.0.11 | I have $ ls -l /dev/video0 crw-rw-rw-+ 1 root video 81, 0 2009-11-25 13:45 /dev/video0 $ grep video /etc/group video:44:dori,marci,apu $ whoami apu $ xawtv -c /dev/video0 This is xawtv-3.95.dfsg.1, running this content Ubuntu Logo, Ubuntu and Canonical ę Canonical Ltd.

Notebook: ~$ ls -al /dev/video* crw-rw----+ 1 root video 81, 0 Feb 24 19:07 /dev/video0 crw-rw----+ 1 root video 81, 1 Feb 24 19:34 /dev/video1 Thank you Contributor alalek commented Feb Part of the problem perhaps is that its one of the awkward Ricoh Motion-Eye webcams discussed in detail [here]. Is there another, proper way to check what processes are currently using my webcam? I'm getting a compiler warning about different pointer types.

I tryed to kill the process (pid no), but new one started again????? Here is the full output for each: Buildinfo-3.1-dev.txt BuildInfo-2.4.8.txt Thanks shadow1runner commented Feb 24, 2016 @alalek: cap(0) is my (internal) webcam on my notebook. What is the speed of the Force? The Zoneminder console displays (under the Source column) '/dev/video0 (0)' in orange.1) lsusb shows the camera:Bus 001 Device 004: ID 046d:08dd Logitech, Inc.

Posts: 6Joined: Mon Feb 25, 2013 5:45 pm by joan » Wed Feb 27, 2013 3:39 pm Some web-cams just don't work on the Pi. Top PacoLM Posts: 919 Joined: Wed Dec 02, 2009 9:55 pm Location: Spain Re: 'Failed to open video device /dev/video0: Permission den Quote Postby PacoLM » Fri Aug 14, 2015 10:34 Open Capture Device - and use /dev/video1 ... The output is still the same though: Video I/O: DC1394 1.x: NO DC1394 2.x: YES (ver 2.2.1) FFMPEG: YES codec: YES (ver 54.35.0) format: YES (ver 54.20.4) util: YES (ver 52.3.0)

Check the log for details. My Blog - http://www.sirlagz.netVisit my blog for Tips, Tricks, Guides and More !WiFi Issues ? In user privileges, you must enable the line "Capture video from TV or webcams, and use 3d acceleration", log off and log in. Posts: 908Joined: Sun Jul 29, 2012 9:06 pm by drgeoff » Fri Mar 01, 2013 1:22 pm Code: Select allsudo apt-get install gitand perhaps alsoCode: Select allsudo apt-get install git-core Posts:

Some only work at specific resolutions and not at others. asked 2 years ago viewed 13124 times active 1 year ago Blog Stack Overflow Gives Back 2016 Linked 1 web cam starting hangs os Related 3Webcam Device Driver to support H.2642Capture