One of the utilities that comes with ivtv is called 'encoder' which may 
be installed as 'ivtv-encoder'.  I had a script that used this program 
to do recording until I got MythTV setup.  It takes all kinds of setup 
options and can be told how long to record in seconds.

Usage: encoder [-s] [-c chann|-f freq] [seconds] [mpegfile]
[-vport N]      Video Device Port: 0-n
[-aspect N]     Aspect Ratio: 1-4
[-bmode N]      Bitrate Mode: 0=var 1=const
[-brate N]      Bitrate: 1000000-15000000
[-bpeak N]      Peak Bitrate: 1000000-16000000
[-stream N]     Stream Type: 0-14
[-frate N]      Frame Rate: 0=30fps or 1=25fps
[-fpgop N]      GOP size
[-audio N]      Audio Bitmask in Decimal: 0-255 bitmask
[-dnrmode N]    DNR Mode: 0-3
[-dnrtype N]    DNR Type: 0-3
[-dnrspat N]    DNR Spatial: 0-16
[-dnrtemp N]    DNR Tempporal: 0-32
[-pulldown N]   Pulldown: 0-1
[-brightness N] 0-255
[-contrast N]   0-127
[-saturation N] 0-127
[-hue N]        -128-128
[-input N]      Input Port: 0-8

-- 
tom_p
[EMAIL PROTECTED] -- http://nbpfaus.net/~pfau/


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