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

[pablo.morales at abitab.com.uy]

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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