From: "David Carraher" <[EMAIL PROTECTED]>
Subject: Re: DV Camera for Streaming Video
"Capturing" usually refers to getting the footage from the camera into a
computer.
A Firewire ( IEEE 1394) connection ensures no loss from source to computer.
It is better than, say, a S-video connection, whcih is analog and hence
lossy.
I use an analog bus and nonetheless find it very acceptable for research
quality videos.
As far as cameras go, as long as you're digital, the quality should be
acceptably high for corporate quality work. Professionals would dispute me
here, but most people would be quite happy looking at the output of a Sony
VX1000 or Canon XL1 ($3k and $4k respectively).
Remember that you may have a lot of leeway in terms of the quality you
capture at. Our Media 100 system lets us work with 60 k bpf (bits per
frame) to 300 k bpf.
150 k bpf is very high quality. 80 kbps is what we can get by with.
Remember you've got to have a lot of working storage (hard disk) to handle
high rates. Think, say of 18 G of disk memory for the projects you are
currently working with (ie not backup storage, which is another issue).
David Carraher, TERC
Cambridge, MA
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From: "Dirk Leas" <[EMAIL PROTECTED]>
Subject: DV Camera for Streaming Video
I want to produce streaming media and was wondering what level of quality
was needed for the source video. Anybody using DV cameras to capture video
content? Which cameras are most appropriate (e.g. will a $1500USD Sony
TRV-10-like camera be sufficient, a TRV-900 for $2K, or do I need a $4K
camera like a Canon XL-1?)? My target audience is in the corporate/business
space with high-speed internet/intranet connectivity (e.g. DSL/cable
modem/T1, etc.). All I could find at real.com was, "use the best capture
technology you can". I'm hoping that doesn't mean a $50K betacam...
TIA,
Dirk
