Hi,
Just from curiosity I've compared the honorable VP3 Vs an MPEG-1 stream.
Target was 1150Kbit/s
The slowest box I have is an Athlon 1.7XP, which is of course more
performant than an even older PII.
The 1st bad new is that VP3 for QT doesn't work anymore (white screen) while
the DirectX version takes nothing less than 92-96% of the CPU.
The MPEG-1 is more kind and 40-50% is enough for the Main Concept Splitter.
Using Nero Show Time even less 13-20%.
MPEG-1 playedback by QT 6.52 requires 40-50% of the CPU.
Soo Sorry :-)
Gianni
----- Original Message -----
From: "Ben Waggoner" <email@hidden>
To: "Roger Howard" <email@hidden>
Cc: "Gianni Maselli" <email@hidden>;
"email@hidden" <email@hidden>
Sent: Friday, August 26, 2005 1:23 AM
Subject: Re: compression formula needed!
> Roger,
>
> Nominally, each 1x is 1.5 Mbps, so 3 Mbps should be just fine on
> the spec'ed 32x drive.
>
> Ben Waggoner, Interframe Media http://www.interframemedia.com
> Technology and Strategy for Digital Media
>
> My Book: http://www.cmpbooks.com/compression/
> My Tutorials http://www.classondemand.net/benwaggoner/
> My Stanford Class http://www.digitalmediaacademy.org/compression.html
>
> On Aug 25, 2005, at 3:26 PM, Roger Howard wrote:
>
> >> Whoof - reliable 640x480 on a PII? I'm probably go for
> >> MPEG-1. CBR @ 3 Mbps?
> >>
> >
> >
> >>> on 25-08-2005 16:32, Craig Taylor at email@hidden
> >>> wrote:
> >>>
> >>>>
> >>>> I sent an e-mail recently about trying to strike the balance
> >>>> between quality
> >>>> and slower computer speeds on a current project. The minimum
> >>>> specs for the
> >>>> target machines are: Pentium II MMX, 128MB RAM, 32x CD. We are
> >>>> streaming
> >>>> straight from CD and there is a couple videos that run 5-8 minutes.
> >>>> Sorenson is just proving too much for the processing power even
> >>>> using CBR
> >>>> and dropping frames. Skipping video, loss of sync. Any
> >>>> suggestions on the
> >>>> next best option. (We need to try and run at 640x480, but will
> >>>> drop size if
> >>>> absolutely necessary.)
> >>>>
> >
> > Ben, you could maybe decode MPEG1 on that CPU... but a machine of
> > that vintage is very unlikely to be able to get 3Mb/s out of a CD-ROM!
> >
> > What on earth could demand such ancient decoding requirements?
> >
>
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