V4L TV Viewing
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Applications for watching TV
- kaffeine
- tvtime -- user manual
- xawtv and motv (original TV viewers for bttv from Gerd Knorr)
- zapping (TV viewer for the Gnome desktop)
- kdetv] (TV viewer for the KDE desktop, successor of kwintv) -- sourcecode
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"