Specifications

if [ ! −z $3 ]; then

$V4LCTL setchannel $3

# Check for vcr dir

if [ ! −x $OUTPUT ]; then

mkdir $OUTPUT

DATE=`date +%m−%d−%Y−%H:%M`

# Set the AC97 volume to 0 (so we don't hear the sounds)

# Get mixer values first

PLAY_VOL=`$AMIXER −c 0 cget name='Master Playback Volume' | grep : | sed 's/^.*=$[^,]*$.*$/\1/'`

CAP_VOL=`$AMIXER −c 0 cget name='PCM Playback Volume' | grep : | sed 's/^.*=$[^,]*$.*$/\1/'`

$AMIXER −c 0 −q cset name='CD Playback Volume' 100

$AMIXER −c 0 −q cset name='Capture Volume' 1

# if tvtime.xml is set, then grab settings out of it

if [ −f $TVTIME ]; then

CONTRAST=`cat ${TVTIME} | grep DefaultContrast | sed 's/^.*value="$[^"]*$.*$/\1/'`

BRIGHTNESS=`cat ${TVTIME} | grep DefaultBrightness | sed 's/^.*value="$[^"]*$.*$/\1/'`

COLOR=`cat ${TVTIME} | grep DefaultColour | sed 's/^.*value="$[^"]*$.*$/\1/'`

HUE=`cat ${TVTIME} | grep DefaultHue | sed 's/^.*value="$[^"]*$.*$/\1/'`

$V4LCTL bright ${BRIGHTNESS}% color ${COLOR}% contrast ${CONTRAST}% hue ${HUE}%

$STREAMER −p 4 −q −t ${TIME} −r 24 −q −o ${OUTPUT}/${PREFIX}−${DATE}−${TIME}.avi −j 90 −f mjpeg −F mono16

# Sometimes streamer doesn't always re−mute audio, mute it again just to be sure

$V4LCTL volume mute on

# Restore volumes

$AMIXER −q cset name='Master Playback Volume' $PLAY_VOL

$AMIXER −q cset name='PCM Playback Volume' $CAP_VOL

# EOF

The BTTV HOWTO

D. Recording Video and Sound with Bttv 41