Changes between Initial Version and Version 1 of RemoteLiveVideoStreaming


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Timestamp:
06/02/10 05:30:33 (10 years ago)
Author:
sc
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  • RemoteLiveVideoStreaming

    v1 v1  
     1== Remote Live Video Streaming From LEGO Mindstorms NXT Robot's Perspective == 
     2 
     3Currently a combination of '''mplayer''' and '''VNC''' is used to remotely view a live video stream from the '''LEGO Mindstorms NXT''' robot's perspective. '''mplayer''' is  used to locally display a live video feed on the '''Nokia n900''''s screen, which is then viewed remotely over the local Wifi network via '''VNC'''. This is neither an ideal nor efficient method, but has been demonstrated to work better over a local Wifi connection than a purely Internet-based solution such as [http://qik.com/ Qik]. 
     4 
     5 * First launch the "'''x11vnc'''" application on the '''Nokia n900''' 
     6[[Image(wiki:HowToUseBrainstormsSoftware:n900-6-x11vnc.jpg)]]] 
     7 * Next connect to '''Nokia n900''' using the '''VNC Viewer''' application from a computer such as a Windows PC. 
     8 * Slide the camera lens cover open on the rear of the '''Nokia n900''', then exit the "'''Camera'''" application which launches automatically, making sure to leave the lens cover open. 
     9 * Launch a new "'''X Terminal'''" application or '''SSH''' into the '''Nokia n900''' 
     10 * Run the following '''mplayer''' command: "'''{{{mplayer -vo x11 -fs tv:// -tv driver=v4l2:device=/dev/video0}}}'''" (note that changing "'''/dev/video0'''" to "'''/dev/video1'''" will switch to displaying the forward-facing camera, though its resolution is considerably lower and the image quality is comparably quite poor) 
     11[[Image(wiki:HowToUseBrainstormsSoftware:n900-7-mplayer_camera.jpg)]] 
     12 * A live view from the '''LEGO Mindstorms NXT''' robot's perspective should now be visible in the '''VNC Viewer''' application. 
     13[[Image(wiki:HowToUseBrainstormsSoftware:n900-8-remote_live_streaming.jpg)]] 
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