compress mpeg

This is probably a futile effort, but I would like to compress a mpeg movie.
For 100 MB of movie, I'm prepared to spend at least 1 hour on compressing
it. Are there any techniques that will benefit from the extra time spent?

bzip2 reduces the size with about 1-3% with the best compression (-9
option), but can't this be twed futher, with larger block sizes?

Any ideas or is it futile?

Gunnar G wrote:

> This is probably a futile effort, but I would like to compress a mpeg movi
e.
> For 100 MB of movie, I'm prepared to spend at least 1 hour on compressing
> it. Are there any techniques that will benefit from the extra time spent?
>
> bzip2 reduces the size with about 1-3% with the best compression (-9
> option), but can't this be twed futher, with larger block sizes?
>
> Any ideas or is it futile?

It is futile to compress an already compressed file like MPEG. The only thin
g
you can do is to recode the file at a lower quality and/or a smaller frame s
ize.

--
Phil Frisbie, Jr.
Hawk Software
http://www.hawksoft.com

Phil Frisbie, Jr. wrote:

> Gunnar G wrote:
> 
>
>
> It is futile to compress an already compressed file like MPEG. The only
> thing you can do is to recode the file at a lower quality and/or a
> smaller frame size.
>
Or a better codec. For the same quality, MPEG-4 codecs(like DIVX) will
need smaller bitrates than MPEG1 or MPEG2.

--
Michel Bardiaux
Peaktime Belgium S.A.  Bd. du Souverain, 191  B-1160 Bruxelles
Tel : +32 2 790.29.41