V4L capturing: Difference between revisions
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==TV Recording applications== |
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There are several applications for continuous capture (this page could use some attention): |
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* [http://dvr.sourceforge.net DVR] -- Digital Video Recorder for Linux |
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* streamer |
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* [http://ffmpeg.sourceforge.net/index.php ffmpeg] |
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* videodog |
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* [http://freevo.sourceforge.net Freevo] -- open-source digital video jukebox |
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* [[mencoder]] |
* [[mencoder]] |
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** [[ |
** [[home_brews |script examples]] |
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* [[MythTV]] |
* [[MythTV]] -- a Personal Video Recorder project |
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* [http://linux.bytesex.org/xawtv streamer] |
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* ffmpeg |
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* transcode |
* [http://www.transcoding.org transcode] |
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* [http://paginas.terra.com.br/informatica/gleicon/video4linux/videodog.html videodog] |
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* webcam |
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==Other frame grabbers== |
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* [http://tldp.org/HOWTO/Webcam-HOWTO/framegrabbers.html framegrabbing applications] -- from [http://tldp.org/HOWTO/Webcam-HOWTO/index.html the Webcam HowTo] |
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* [http://www.gnomemeeting.org GnomeMeeting] -- Linux H.323 compatible client for the Gnome desktop |
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* [http://motion.sourceforge.net motion] -- motion-detection using a webcam |
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* [http://www.litech.org/spook spook] -- capture live video and audio and stream it over an IP network |
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* [http://linux.bytesex.org/xawtv webcam] -- captures images and uploads them to a Web-Server via ftp or ssh in a endless loop |
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:* v4lctl -c /dev/video0 list |
:* v4lctl -c /dev/video0 list |
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:* v4lctl -c /dev/video0 bright "60%" |
:* v4lctl -c /dev/video0 bright "60%" |
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:* v4lctl -c /dev/video0 contrast "55%" |
:* v4lctl -c /dev/video0 contrast "55%" |
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3. Capture the stream |
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:* streamer: |
:* streamer (part of the xawtv package): |
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:: ''Usage:'' |
:: ''Usage:'' |
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:: streamer -i 1 -c /dev/video0 -s 320x240 -q -j 80 -f jpeg -n ntsc -b 24 -o /var/www/webcam.jpeg |
:: streamer -i 1 -c /dev/video0 -s 320x240 -q -j 80 -f jpeg -n ntsc -b 24 -o /var/www/webcam.jpeg |
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:: ''Usage:'' |
:: ''Usage:'' |
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:: webcam /etc/webcamrc |
:: webcam /etc/webcamrc |
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:: See [[webcams]] for model and driver details |
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==Compression formats== |
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====Image format information==== |
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Good place to look is [http://www.fourcc.org/ http://www.fourcc.org/] |
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:*[http://www.fourcc.org/ Fourcc site] |
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About philips webcam compression format good info and free decoders can be found on |
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:*[http://developers.videolan.org/x264.html H264] -- a highly compressed codec optimized for streaming |
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[http://www.saillard.org/linux/pwc/ http://www.saillard.org/linux/pwc/] |
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:*[http://www.xvid.org xvid] -- free mpeg4 codec |
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Revision as of 08:52, 2 March 2006
TV Recording applications
- DVR -- Digital Video Recorder for Linux
- ffmpeg
- Freevo -- open-source digital video jukebox
- mencoder
- MythTV -- a Personal Video Recorder project
- streamer
- transcode
- videodog
Other frame grabbers
- framegrabbing applications -- from the Webcam HowTo
- GnomeMeeting -- Linux H.323 compatible client for the Gnome desktop
- motion -- motion-detection using a webcam
- spook -- capture live video and audio and stream it over an IP network
- webcam -- captures images and uploads them to a Web-Server via ftp or ssh in a endless loop
Common configuration and control commands
1. v4l2ucp -- universal control panel for v4l2
2. Command-line control the TV card (v4lctl is a part of the xawtv package)
- v4lctl -c /dev/video0 list
- v4lctl -c /dev/video0 bright "60%"
- v4lctl -c /dev/video0 contrast "55%"
3. Capture the stream
- streamer (part of the xawtv package):
- Usage:
- streamer -i 1 -c /dev/video0 -s 320x240 -q -j 80 -f jpeg -n ntsc -b 24 -o /var/www/webcam.jpeg
- streamer -i 1 -c /dev/video0 -s 320x240 -q -j 80 -f jpeg -n ntsc -b 24 -o /dev/stdout |uuencode thief.jpeg|sendmail alarm@foo.com
- videodog:
- Usage:
- videodog -x 640 -y 480 -w 3 -b 1 -c 65535 -m PAL -q -d /dev/video0 -j -f /var/www/webcam.jpg
- mencoder
- webcam:
- This useful tool supports continuously moving (ftp or scp - ssh copy) of jpeg output to remote server. Also allows put in additional text (date time, location), rotating of image.
- Usage:
- webcam /etc/webcamrc
- See webcams for model and driver details
Compression formats
- Fourcc site
- H264 -- a highly compressed codec optimized for streaming
- xvid -- free mpeg4 codec