[MPlayer-DOCS] Some points for cd-dvd.xml

[D Richard Felker III]

On Thu, Feb 17, 2005 at 08:25:02AM +0100, Jiri Heryan wrote:
> >yeah, set it barely above the speed you need to read a movie. keep in
> >mind 1x is 1.2 megabit/sec, so 8x is probably enough for any sane
> >movie file, and 12x is certainly safe. lower values would be ok with
> >large -cache sizes.
> > 
> >
> Most codecs defaults to 1500kbits for movie and 128 kbits for audio, so 
> 1x is not enough at all, plus you must compensate random slowdowns which 
> can appear, so 8x is minimum for me. 24x is maximum you should set when 
> you use it for common work too. It is reasonably fast and has a minimum 
> noise.

i didn't say 1x was enough, i just gave it as a base rate. in fact
your 1500 is insanely low; a proper 2pass mpeg4 file will peak at 8
mbps or higher with most content! so you really do need 8x, for these
rare peaks. there's little point in going over 8x, though.

rich