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Re: compression formula needed!




On Aug 25, 2005, at 3:47 PM, Gen Kiyooka wrote:


On Aug 25, 2005, at 3:26 PM, Roger Howard wrote:


On Aug 25, 2005, at 3:19 PM, Ben Waggoner wrote:


Craig,

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!

He's referring to MPEG- oriented bandwidth requirements, megabits / second, which is
basically 2X CDROM, fine for that vintage of machine.

Argh, of course you're right! Ben too...

-R

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References: 
 >Re: compression formula needed! (From: Gianni Maselli <email@hidden>)
 >Re: compression formula needed! (From: Ben Waggoner <email@hidden>)
 >Re: compression formula needed! (From: Roger Howard <email@hidden>)
 >Re: compression formula needed! (From: Gen Kiyooka <email@hidden>)



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