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List: ms-wmtalk
Subject: Re: Adventures with AIW Radeon
From: Somedude <somedude () SOMEDUDE ! COM>
Date: 2001-07-31 5:42:09
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I suspect it is closer to number one, as the captures are at 640, no
resizing. Motion detection seems to make some sense. I'll but that theory,
'cuz it means that maybe I'm not just nuts after all..
Mark Gregory
----- Original Message -----
From: Brandon Wirtz <bwirtz@GRIFFIN-DIGITAL.COM>
To: <WMTalk@DISCUSS.MICROSOFT.COM>
Sent: Monday, July 30, 2001 8:25 PM
Subject: Re: Adventures with AIW Radeon
> Depending on the Capture, and compress method it is possible that a
> capture is better looking... This is my DivX story.... If a compressor
> is smart it Buffers 3 or 4 frames runs a motion detection and then
> writes the frames. A really smart compressor will take an average of
> adjacent frames. Static is unlikely to be in the same spot on any two
> frames so Static will only be half as noticeable...
>
> The other possibility is the Rescale... If the input is 640x480 and the
> output is 320x240 than a each 2x2 matrix is going to be represented by a
> single pixel... (Sorta) Bi-Cubic uses a better method...
>
> What you really get is like this....
>
> An all black screen has static on it... Static will be white and there
> for 8 for my demonstration black will be 0
>
> 0 0 0 0
> 8 0 0 0
> 0 8 0 8
> 0 0 8 0
>
> The First two rows become
>
> 8/4 = 2
> 0/4 = 0
>
> The next two rows become
>
> 8/4 = 2
> 16/4 = 4
>
>
> So the resulting matrix looks like
>
> 2 0
> 2 4
>
> At least with nearest neighbor...
>
> And this example has a lot of static... In any event, the effect is
> simialr to taking off your glasses and looking at a Monet.
>
>
> Brandon N. Wirtz
> Chief Operations Officer
> Griffin Digital Solutions
> www.griffin-digital.com <http://www.griffin-digital.com>
> 419.255.7642
> bwirtz@griffin-digital.com
>
>
> -----Original Message-----
> From: WMTalk [mailto:WMTalk@DISCUSS.MICROSOFT.COM] On Behalf Of Somedude
> Sent: Monday, July 30, 2001 8:50 PM
> To: WMTalk@DISCUSS.MICROSOFT.COM
> Subject: Re: Adventures with AIW Radeon
>
>
> Ahh, maybe there is a memory leak somewhere?
>
> The problem we have with the MPEG capture is that is just looks really
> grainy and seems much noisier. It's a strange thing. And that is with
> I-Frame only capture too. There must be some kind of magic happening
> with the VCR1&2 codecs. I would swear that many of the captures look
> better than the original source material, but there is no added contrast
> or color shifts or anything. The video just seems, cleaner, less noisy.
>
> Let me know how the Radeon card works out for you. I am very interested
> to know if it can be wrenched around to use the magic avi codecs!
>
> MG
> ----- Original Message -----
> From: Timothy B. Everingham <teveringham@EARTHLINK.NET>
> To: <WMTalk@DISCUSS.MICROSOFT.COM>
> Sent: Monday, July 30, 2001 4:42 PM
> Subject: Re: Adventures with AIW Radeon
>
>
> > Mark,
> >
> > I will have to see my results, but I may try your suggestion regarding
>
> > reinstalling the old software. I have heard that doing MPEG capture
> > with only I frames does help.
> >
> > As for Premiere, once I got large amounts of memory the problem with
> > VCR2 mostly went away. It started to disappear when I went from 64 MB
> > to 192 MB of RAM on my old Pentium II machine. It got even better when
>
> > I when I upgraded to a P3/800 with 256 MB(I now have 512 MB). Also I
> > have found
> that
> > defraging your hard drives and restarting the computer before editing
> > and saving your project frequently helps. I recently did a project in
> > 320 x
> 240
> > 30 fps VCR2 that was over an hour in length with hardly any crashes.
> >
> > As for capturing 640 x 480 30 fps with the old card, it did not work
> > for me. This is one of the reasons why I upgraded(4 year old
> > technology vs. 1 year old technology).
> >
> > At 04:50 PM 7/29/01 -0700, you wrote:
> > >With the third iteration of the ATI AIW 32 card, as you know the VCR1
>
> > >and VCR2 codecs were shut off with the stock software shipped with
> > >the
> package.
> > >We found the MPEG capture to just not be as good. What we have done
> > >is installed older software (MMC 6.2) with the 3rd gen cards. That
> > >has
> opened
> > >up VCR1 and VCR2 again, and man, the captures look sooo much better.
> > >There is also something else going on with the 3rd gen card. Even
> > >with fairly high powered stations, we were never able to get solid
> > >captures at 640 using VCR2. There were always strange artifacts and
> > >frames being dropped. But now, we are doing VCR2 captures at 640 very
>
> > >clean, even with
> an
> > >old P3-500! And, the file size is a fraction of VCR1. Only downside
> > >is
> that
> > >Premiere doesn't like VCR2 all that much, it crashes periodically...
> > >2
> steps
> > >forward, 1 step back..
> > >
> > >
> > >Mark Gregory
> > >----- Original Message -----
> > >From: Timothy B. Everingham <teveringham@EARTHLINK.NET>
> > >To: <WMTalk@DISCUSS.MICROSOFT.COM>
> > >Sent: Sunday, July 29, 2001 1:41 PM
> > >Subject: Adventures with AIW Radeon
> > >
> > >
> > > > I picked up an ATI All In Wonder Radeon AGP Video/Video Capture
> > > > card yesterday to replace my old ATI All In Wonder Pro AGP card. I
>
> > > > am still
> in
> > > > my initial experiments with it. I have not hooked up a video
> > > > source to
> it
> > > > yet, but it looks like the tip about using Wmcap as a bridge
> > > > between
> the
> > > > card and the Windows Media Encoder will work for me. Adobe
> > > > Premiere
> 5.1c
> > > > will only capture in raw 16 bit video with the card, so it looks
> > > > like
> I
> > > > will have to capture video in MPEG 1 or 2 via another program and
> import
> > >it
> > > > into Premiere(I find that with the things I am doing now, I have
> > > > to do
> > >some
> > > > editing of the video before encoding it into Windows Media). I do
> > > > not
> know
> > > > if Premiere 6.0 will help with this. My sources are still S-Video
>
> > > > & Composite, so just buying a Firewire card is out. I wanted to
> > > > wait
> until
> > > > Windows XP is out for a while before possibly buying one of the
> > > > Matrox
> or
> > > > Pinnacle editing cards probably with a new system(current system
> P3/800
> > > > with 512 MB 133 SDRAM & Two 40GB ATA 100 7200 RPM Drives running
> > > > Win
> 98
> > > > SE). I have a feeling my experiments are going to be drawn out
> > > > over
> the
> > > > next few weeks because of other work, but I will inform the group
> > > > of
> any
> > > > important developments. I paid about $200 for the card, and I
> > > > still
> have
> > > > not determined if it was worth it. I may miss too much the ATI VCR
>
> > > > 1 &
> 2
> > > > codecs for capturing video for editing like one other person in
> > > > this
> > >group.
> > > >
> > > >
> > > >
> > > >
> > > > Timothy Everingham teveringham@earthlink.net Azusa,
> California,
> > >USA
> > > > President, Timothy Everingham
> > > > Consulting<http://home.earthlink.net/~teveringham/>
> > > > Secretary, Association of Personal Computer User
> > >Groups<http://www.apcug.org>
> > > > Vice President, Windows Media User's Group of Los
> > > > Angeles<http://wmla.windowsmedia.org>
> > > >
> > > >
> >
> >
> > Timothy Everingham teveringham@earthlink.net Azusa,
> California,
> USA
> > President, Timothy Everingham
> > Consulting<http://home.earthlink.net/~teveringham/>
> > Secretary, Association of Personal Computer User
> Groups<http://www.apcug.org>
> > Vice President, Windows Media User's Group of Los
> > Angeles<http://wmla.windowsmedia.org>
> >
> > ----------------------------------------------------------------
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>
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