> I would like to grab a single frame at a time of composite video to my > Linux PC, and would greatly welcome any advice on the best way to do For a couple of months recently I've taken snapshots at 5 min intervals of the interior of a bird nesting box. The hardware is a generic BT848 TV card and a cheap miniature B/W TV camera with infra red diodes for lighting. The kernel is 2.2.13 with v4l and bttv modules. I used xawtv running in an X window and a cron entry as follows: # Take a snapshot of the nest box every 5 mins. Move snapshot to # ~/Video/snapshot dir, after sleeping for 4 secs to allow image to be written. # Dump any messages. */5 * * * * /usr/local/bin/xawtv-remote -v 2 -d 0:0 snap jpeg win 1> /dev/null 2> /dev/null; sleep 4; mv ~/snap-Camera* ~/Video/snapshots # Make a movie out of snapshots in ~/Video/snapshots at midnight 59 23 * * * cd ~/Video/; /usr/local/bin/mpeg_encode default.param 1> /dev/null; cd - As you can see, as well as generating 5 min snapshots, a time-lapse movie was created. I found the system worked very well. Hope this helps - let me know if you want any more details. Regards: Jim Ford _______________________________________________________________________ FSmail - Get your free web-based email from Freeserve: www.fsmail.net
