Difference between revisions of "V4L TV Viewing"

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m (Note V4l2ucp)
m (Formatting)
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* [http://www.kdetv.org kdetv]] (TV viewer for the KDE desktop, successor of kwintv) -- [http://websvn.kde.org/trunk/extragear/multimedia/kdetv sourcecode]
 
* [http://www.kdetv.org kdetv]] (TV viewer for the KDE desktop, successor of kwintv) -- [http://websvn.kde.org/trunk/extragear/multimedia/kdetv sourcecode]
  
===Common configuration and control commands===
+
==Common configuration and control commands==
  
 
1. [[v4l2ucp]] -- universal control panel for v4l2 devices
 
1. [[v4l2ucp]] -- universal control panel for v4l2 devices

Revision as of 07:59, 2 March 2006

Applications for watching TV

Common configuration and control commands

1. v4l2ucp -- universal control panel for v4l2 devices

2. Command-line control of the TV card

  • v4lctl -c /dev/video1 list
  • v4lctl setnorm ntsc-m
  • v4lctl setfreqtab us-cable
  • v4lctl setfreqtab us-bcast
  • v4lctl setchannel 3
  • v4lctl volume mute off
  • v4lctl volume 100
  • v4lctl audio stereo
  • v4lctl -c /dev/video0 setattr 'chroma agc' on (bttv only)
  • v4lctl -c /dev/video0 hue "100%" (or "0%" -- same thing)
  • v4lctl -c /dev/video1 bright "50%"
  • v4lctl -c /dev/video2 contrast "45%"
  • v4lctl -c /dev/video0 color "50%"

3. Test the video

  • xawtv -hwscan
  • xawtv -remote -noxv -c /dev/video0 -vbidev /dev/vbi0

4. Test overlay mode (capture card controls display -- easy on CPU)

  • xawtv -noxv -capture overlay
  • xawtv -v4l1 -capture overlay
  • xawtv -xvtv -capture overlay
  • xawtv -xvtv_overlay on -capture overlay
  • xawtv -xvtv_overlay off -capture overlay

5. Test grabdisplay mode (application controls display -- required for deinterlacing and other effects)

  • xawtv -noxv -capture grabdisplay
  • xawtv -v4l1 -capture grabdisplay
  • xawtv -xvtv -capture grabdisplay
  • xawtv -xvtv_overlay on -capture grabdisplay
  • xawtv -xvtv_overlay off -capture grabdisplay

6. Test streamer

  • streamer -i "S-Video Input"