[MPlayer-users] Bitrate confusion
Meino Christian Cramer
Meino.Cramer at gmx.de
Fri Jul 16 15:25:47 CEST 2004
Hi,
possible a typical newbie question....
I want to encode a greyscaled video.
Audio extraction said I "should" use -- for example -- 1616 as vbitrate for a target
size of 700MB.
I used 1591 and got a 722572402 fat file.
I fear, I missed an important option to feed into mencoder...here are
the options I used:
export OPTS="-vf denoise3d=0:0:0:hqdn3d=0:0:0:crop=700:576:12:0 \
-mc 0 -noskip -skiplimit 0"
export LAVOPTS=psnr:mbd=2:gray:vcodec=mpeg4:vpass=#PASS#:vbitrate=1591:autoaspect:trell:vmax_b_frames=1:predia=2:dia=2:preme=2:vme=5:naq:v4mv
export PASS1LAVOPTS=`echo $LAVOPTS | sed 's|#PASS#|1|'`
export PASS2LAVOPTS=`echo $LAVOPTS | sed 's|#PASS#|2|'`
(( cat <videofile> | \
mencoder $OPTS -oac copy \
-ovc lavc \
-lavcopts ${PASS1LAVOPTS} - ) >> PASS1.log 2>&1)
kill $PASS1TAILID
(the equivalent for PASS2...)
What am I making wrong here ?
Thank you very much for any help in advance! :)
Meino
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