I have connected the monitor to the pi via HDMI. I would like to figure out a way to get a live video playing on the monitor. ( not over a network) I know there is a answer for this question here.


But in my case i am using USB camera module,not the pi camera. kindly suggest.

  • Which Pi do you have? Which OS are you using? Do you want to do this from the GUI or from the command-line?
    – tlhIngan
    Dec 23, 2016 at 5:15
  • 1
    Possible duplicate of How to stream video from raspberry Pi camera and watch it live
    – tlhIngan
    Dec 23, 2016 at 5:16
  • I am using raspberry pi 3 and working with Linux. And yes, I wanna do this with command line.
    – navs
    Dec 23, 2016 at 7:00
  • Well it was the same question but i am using USB camera. I hope all the answer mentioned above there are for pi camera. can i consider the same answers for USB cam too?
    – navs
    Dec 23, 2016 at 7:07
  • Duplicate of earlier question: USB camera for streaming
    – Dave Jones
    Dec 29, 2016 at 18:15

1 Answer 1


If you have VLC installed (if you don't, it can be installed with sudo apt-get install vlc) and an X server running, you can run

vlc v4l2:// :v4l2-dev=/dev/video0

to see live video from the camera.

You can also use parameters from here to change video settings like this:

vlc v4l2:// :v4l2-dev=/dev/video0 :v4l2-width=640 :v4l2-height=480
  • Hi, I have tried it, v4l2 demux error: dequeue error:no such device this is the error I am getting. In the pi's desktop environment I installed VLC and tried to play the video with the command you mentioned above. media player was opened with the blank black screen.
    – navs
    Dec 29, 2016 at 7:16

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