Chapter 20 . Playing (Web hosting comparison) Music and Video 531
Chapter 20 . Playing Music and Video 531 card is not being properly detected, find your card in the CARDLIST files. Then add the appropriate line to the /etc/modprobe.conf file. For example, to add a Prolink PV-BT878P, revision 9B card, add the following line to the file: options bttv card=72 . You can also add other options listed in the Insmod-options file for the bttv driver. If you are still having problems getting your card to work, a mailing list is available on which you can ask questions about Video4Linux issues: http://listman.redhat.com/mailman/listinfo/video4linux-list. While this list is for Red Hat specifically, the information is germane to most distributions. One possible reason that you don t see any video when you try to run tvtime or other video applications is that some other person or video application already has the video driver open. Only one application can use the video driver at a time. Another quirk of video4linux is that the first person to open the device on your system becomes the owner. So you might need to open the permissions of the driver to allow people other than the first person to use it to access the video4linux driver. Running Tvtime To start up the tvtime viewer, simply select TVtime Televison Viewer from the Sound & Video or Multimedia menu (depending on your Linux distribution), or type the following from a Terminal window on your desktop: $ tvtime & A video screen should appear in a window on the desktop. Click on the window to see a list of stations. Right-click to see the onscreen Setup menu. Here are a few things you can now do with your tvtime onscreen display: . Configure input Change the video source, choose the television standard (which defaults to NTSC for the U.S.), and change the resolution of the input. . Set up the picture Adjust the brightness, contrast, color, and hue. . Adjust the video processing Control the attempted frame rate, configure the deinterlacer, or add an input filter. . Adjust output Control the aspect ratio (for 16:9 output, for example), apply a matte, or set the overscan mode. Video Conferencing with GnomeMeeting The GnomeMeeting window lets you communicate with other people over a network through video, audio, and typed messages. Because GnomeMeeting supports the H323 protocol (a standard for multimedia communications), you can use it to
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