[MPlayer-users] 3 pass encoding: scaling and bitrate

[Carlos J. Mazieri]

Em Terça 04 Maio 2004 16:01, pablo.morales at abitab.com.uy escreveu:
I encode using xvidenc in its simples form without any problem
>
> xvidnecopts bitrate=1800:me_quality=4:4mv, crop=XXXXXX, scale XXXXX
>  -sws 7


Could you show us your full command ??



> Hi..
> Most of the times, what I do most, is not to encode using 2 or 3 passes,
> firts, cause I do not have a powerfull CPU, second, have not time.
> Because I want good quality stuff, I encode using hi bitrates, 1900 morre
> than less and that gives me a file with an average file zise of 1570MB
> to fit in two 790MB CD.
>
> Most of the time the secret resides in the scale, I use 576:432 most of
> the time, I tried higer resolutions and is worst, ( lots of macroblock
> on some scenes ). but it depends on the movie, for example, I encoded
> final fantasy using a resolution os 704:XXX, and the quality was just
> GREAT, with an average of 1880 bitrate.
>
> If you want to encode in one CD, maybe you'll need trell:cbp
>
> I encode using xvidenc in its simples form without any problem
>
> xvidnecopts bitrate=1800:me_quality=4:4mv, crop=XXXXXX, scale XXXXX
>  -sws 7
>
>
> Bytes..
>
> On 4/5/2004, "Marcos Dione" <mdione at grulic.org.ar> wrote:
> >On Sat, May 01, 2004 at 07:22:53PM -0700, rcooley wrote:
> >> > my question is if the
> >> > suggested bitrate is still valid, even if I scale down the movie.
> >>
> >> Yes.  Bitrate is the ammount of bits per-second.  It has nothing to do
> >> with the video size.  As long as you don't change the length,
> >> everything will be fine.
> >
> >  I forgot to mention that the bitrate I was talking about was the ones
> >suggested to fit cd boundaries (e.g, 700MiB). since I will be (down)
> > scaling, wouldn't that bitrate be inaccurate? I think that downscaling
> > should allow me to increase bitrate...
> >
> >> Incidentally, expect potential a/v sync problems with 3-pass encoding.
> >> It is not recomended for that reason.
> >
> >  so the suggestion would be to grab audio in the first or the second pass
> > (once I eliminate the audio)?
> >
> >--
> >(Not so) Random fortune:
> >Every rectal thermometer made by Johnson and Johnson is personally tested.
> >
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