Re: Dream video machine or nightmare?
From: Captain Dondo (yan_at_NsOeSiPnAeMr.com)
Date: Fri, 27 May 2005 17:54:00 -0700
On Fri, 27 May 2005 19:19:09 -0400, John-Paul Stewart wrote:
> Captain Dondo wrote:
>> I have a project where we're trying to capture 4 video signals. For
>> various reasons, we want to use 1 box if possible. Disk I/O and CPU are
>> going to be limiting factors.
>> I want to use mencoder
>> to capture the raw data, then post-process it to compress for storage
>> and distribution.
> Just out of curiosity: why store raw data and compress it in post
> processing? Lots of cards (e.g., the Hauppage WinTV PVR series) support
> real-time hardware compression (i.e., the card does the compression rather
> than the host CPU). That would eliminate the time-consuming
> post-processing step, reduce load on the host CPU, and reduce disk I/O
> requirements (storing compressed streams rather uncompressed).
Well, I looked at the hardware compression cards; they're a bit out of our
price range. Although it looks like getting hard disk bandwith might be
> FWIW, a company called Linux Media Labs (http://www.linuxmedialabs.com/)
> offers some four input cards that may be of interest to you. The LMLBT44
> in particular sounds like it might meet your needs with just one card.
I'll check it out, thanks.
-- use munged address above to email me SpamTrap DoMeNow@seiner.com