[MPlayer-users] Brightness changing when capturing tv

[Alex Polite]

Hi all.

I've been capturing tv shows with mencoder for some time now and I'm
quite happy with the results.

But one thing is still bugging me. The brightness setting of mencoder
seems to be adaptive. Bright scenes will appear overexposed. The black
borders surrounding the image goes gray.

How do I fix this?

Here's my tv capturing script.

-------------------
CHAN=$1
TIME=$2
NAME=$3



BITRATE=1500


WIDTH=640
HEIGHT=480

MENCODER=/usr/bin/mencoder
CHRT="sudo chrt -f 99"
AUDIO="-oac mp3lame"
VIDEO="-ovc lavc -lavcopts vcodec=mpeg4:vhq:vbitrate=$BITRATE -vf pp=lb,crop=636:480:2:0"


DSP="adevice=/dev/dsp:forceaudio:forcechan=1"
TV="-tv driver=v4l2:device=/dev/video0:input=0:chanlist=europe-west:width=$WIDTH:height=$HEIGHT:outfmt=yuy2"

cd /var/www/files
alsactl restore -f /etc/recordmixersettings
$CHRT $MENCODER $TV $VIDEO $AUDIO -endpos $TIME -o "$NAME.avi" tv://$CHAN
-------------------

-- 
Alex Polite
http://polite.se