[MEncoder-users] Strange FF behavior

[mrrs]

I am burning dvds using a pvr-350, ivtv, mencoder, dvdauthor and growisofs. After much trial and
tribulation, I have managed to get a dvd that is actually usable on my two standalone dvd players.
The problem that I have now is that when Fast Forwarding through the video, rather than smoothly
skipping through the video, I get slow motion, then jump, slow motion, then jump. I can't really
tell, but I don't think it is proceeding through the file at the correct rate either ( 2x,4x,8x,
etc).

I copy from /dev/video0. non default ivtv settings are:
ivtvctl -u 0x3000
ivtvctl -p 6
ivtvctl -f width=720,height=480

I am using the following for mencoder:
inputfile=$1
outputfile=$2
bitrate=$3

# added deinterlace filter
# changed volume from -10 to 10
# removed volume entirely, added options from mencoder docs
# changed vqmin=1 to vqmin=2
mencoder -fps 30000/1001 -of mpeg -oac copy -ovc lavc \
-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:\
vbitrate=$bitrate:keyint=15:trell:mbd=2:precmp=2:subcmp=2:cmp=2:\
dia=-10:predia=-10:cbp:mv0:vqmin=2:lmin=1:dc=10 \
-mpegopts format=dvd:vaspect=4/3 \
-vf lavcdeint,harddup -noskip -o $outputfile $inputfile

( if anyone sees anything else stupid that I am doing, feel free to let me know that as well - I
am really new at this. )

dvdauthor script:
inputfile=$1
cat > dvdauthor.xml << EOF
<dvdauthor>
    <vmgm />
    <titleset>
        <titles>
            <pgc>
                <vob file="$inputfile" />
            </pgc>
        </titles>
    </titleset>
</dvdauthor>
EOF

dvdauthor -o $inputfile.dvd.d -x dvdauthor.xml


growsisofs script:
inputdir=$1
growisofs  -Z /dev/cdwriter -dvd-compat -dvd-video $inputdir
eject /dev/cdwriter


Any assistance would be greatly appreciated!

Thanks in advance..

markus


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