Re: [RE] Video question
Lest we confuse...
There is a significant difference between the requirements for
transmitting live video from a camera in DV vs. transferring
recorded video from a camera.
It is only the live case that is within the scope of problems that is
driving the formation of a new project.
Geoff
At 10:26 AM 7/1/2005 , Tuck, Fred wrote:
Also
I would expect as the HDV or other HD formats evolve that 50 or 100 mbs
variants will emerge. If you want to do high quality frame accurate
editing of your video you don't really want to capture it in an MPEG
format with P and B frames. You want the original in an all I frame
format like DV. That takes a lot more bandwidth.
Fred Tuck
-----Original Message-----
From: owner-stds-802-3-re@ieee.org
[mailto:owner-stds-802-3-re@ieee.org]
On Behalf Of Jim Battaglia
Sent: Friday, July 01, 2005 12:37 PM
To: STDS-802-3-RE@listserv.ieee.org
Subject: Re: [RE] Video question
Mike,
I was also add conventional (digital) consumer camcoders to your
list. It is my understanding that most of these still use DV, which
is no where near as compressed as MPEG-2. I realize that many
camcorder manufacturers are moving to MPEG compressed format, but there
are still a a lot of DV cameras out there.
It's not inconceivable that you may want to move this content on a home
network without further compression.
Jim
Michael Johas Teener wrote:
Not speaking for Kevin, but
based on earlier conversations with CE vendors,
MSOs, and content providers, uncompressed video is useful for:
1) Games (from console to display) ... currently only SD quality
(that's
about 270 Mbit/sec in the US, as you noted) ... GigE can carry ... but
the
next generation consoles support HD at 1080i or roughly 1.5Gbit/sec ...
2) Overlaying the UI from a STB or other residential gateway ...
currently
requires uncompressed video because low cost STBs do not include MPEG2
*encoders* ...
3) Security/monitoring cameras ... although the fidelity requirements
are
rather low, so cheap compressors are becoming available that meet this
need
...
On 6/30/05 9:36 PM, "Geoffrey M. Garner"
<gmgarner@comcast.net>
wrote:
In the discussions so far, the digital video has been assumed to either
enter the residence from a service provider or originate in the residence at
a DVD player. It seems that both cases, at least at present, use compressed
digital video. Are there applications that involve uncompressed digital
video (or are there expected to be such applications)?
--
Jim Battaglia
Digital Entertainment Networking
Pioneer Research Center USA, Inc.
101 Metro Drive, Suite 264
San Jose, CA 95110-1343
408-437-1800x203
408-437-1717 (fax)