Green screen shot or still please.

[vuzz]

Can someone please post a still green screen shot please, or are any online yet?

\V

[Haakon]

http://www.showchoir.com/haakon/green.jpg

[boo]

lol...you're killing me larry!

[Stevet]

word

[redindian]

Can someone please post a still green screen shot please, or are any online yet?

\V


lol haakon... ok, here is one which was more recently shot...

http://ofview.com/images/green.gif

[MiniMan]

Lmao

[Barry_Green]

I'm workin' on it... :)

[vuzz]

Walked right into that one. :)

[Blaine]

lol...you're killing me larry!

Is that just here in SoCal or is it a nationwide ad?

[soarprod]

I dont think Sit and Sleep is a national chain.

[boo]

Is that just here in SoCal or is it a nationwide ad?


don't know but it's annoying as hell! figure haakon would know it since he's from ventura...

[Emery Wells]

I got the chance to do some greenscreen tests at Abel Cinetech.

Shot 1080 30p, captured directly to a firewire 800 drive from a powerbook.

GS shot:

http://www.emerywells.com/images/Emery_1080_30p.tif

and a comp test:

http://www.emerywells.com/images/emery1080P.0001.tif

Emery

[Haakon]

don't know but it's annoying as hell! figure haakon would know it since he's from ventura...
It's just as annoying in Ventura, I assure you. :laugh:

[avocade]

That looks pretty good, emerywells. Nice detail on the greenscreen edges, but I'm a bit concerned with the blockyness on the comp. Sharpening involved?

[Stevet]

emerywells,

This is the HVX200, right?

Well, It looks good to me. I don't see any blockyness that was mentioned by Avocade.

Avocade, where are you seeing this?
Since it's an uncompressed tif file, If there's artifacts, it must be a result of the actual footage. I don't see this on my laptop, even when panning across the image full screen. I'll have to look at on my Dell 2405 24".

It does appear just a bit soft to me, but it looks good, and the chroma key looks good to me.

Nice job.

Steve

[Stevet]

Emerywells,
Was the background shot on the HVX200 too?

Thanks, Steve

[Brian Petersen]

Is it a touch out of focus or is the HVX a touch soft? It looks good, but it does seem a touch soft.

[soarprod]

Compare that to a DV key. :)

[Emery Wells]

The background was not shot with the HVX. The image does look a bit soft but i think its slightly out of focus. Horizontal and vertical detail was set as low as it can go (i think -7.) I was with one of the Panny engineers when shooting this and he confirmed that going into the negative numbers for sharpening does not soften the image, it just removes all sharpening. Setting V and H detail at 0 is the middle ground. It is imperative not to use any sharpening when shooting greenscreen. The sharpening algorithms destroy your edges. The blocky artifacts around the ear are clearly visible in the original image. In a regular outdoor shot its pretty much indistinguishable but for greenscreen its relatively visible.

Cheers,
Emery

[zem]

dunno, i'm not very good in keying, but that was quite an easy one (other that the perspective is wrong and the colors awful ;):

http://voon.dyndns.org/hvx/sd-green-comp.jpg

(or the full 1080P res image ) (http://voon.dyndns.org/hvx/full-res-green-comp.jpg)

try that with DV
++ zem

[soarprod]

Now scale that picture by 50% then compare them - yes there is significant compression with the HVX but it is much better then DVX IMO.

[zem]

try that with DV I have and its the same

please show me your magic then
(and lets see how you get out of this :)

http://voon.dyndns.org/hvx/greenscreen-dv-quality.png

++ zem

[zem]

apparently we have different definitions for "the same" ...
(although i got to admit that you're keying skills are much better then mine, so i spent another 15mins to improve it)

http://voon.dyndns.org/hvx/full-res-green-comp.jpg

++ zem

[Jim Arthurs]

Emery, I assume that the raw still was saved from FCP timeline, correct?

If so, the single biggest problem with the image is the incredibly bad way the Apple DVCPRO 100 codec is handling the conversion to RGB.

Go into Photoshop or wherever and look at the individual channels. On the ear, those long upright clumps of color banding have nothing to do with the camera...

...That's the codec speaking to you. Now I know nothing about FCP or this codec, maybe there's a way to change how it does the color dithering.

This is the same problem you see with miniDV... where reds block up in sharp clumps. Yes, this is 4:2:2 vrs 4:1:1 but the same issues apply.

Codecs are either designed for multigeneration duplication (where you don't want to smoothly dither the color over the luma) or presentation (where you do). Hardware output of DV always does dithering, that's why some folks prefer to do keys from the component or Svideo outputs of DV decks.

Just an FYI...

Jim Arthurs

[zem]

zem light wrap that

i would if i knew what that means :)
wait, brighten the edges, right?

k, done that, and also tried to improve the colors (replaced the original)...
but i guess i only made things worse.
++ zem

[PappasArts]

Funny you mention FCP/Apple. Your dead on.....

Back in 2002 a few of us were running uprez tests in HD at Promax. I kept seeing this issue on edges that are in this tiff file. Drove me nuts to see it.

It was not in the raw camera footage though. I created a web page showing the issue. People had all types of opinions including Adam Wilt , Michael Philips. In the end it's Apple's codec. It's designed to do the very thing you stated. 10 generations.

What's funny an old modified Radius DV codec worked much better and the Avid codec was great. Still, years later after many of us have pointed this out to Apple. Nothing! Someone must let them in on the fact that professionals who are worth there weight in salt who know better are not doing 10x generation work in FCP with the DCT codec.



LINK TO HVX200/XLH1 MATERIAL: http://www.pbase.com/Arrfilms

Michael Pappas
Arrfilms@hotmail.com
PappasArts & Arrfilms Main site
http://www.pbase.com/Arrfilms
http://www.PappasArts.com
http://www.Myspace.com/



Emery, I assume that the raw still was saved from FCP timeline, correct?

If so, the single biggest problem with the image is the incredibly bad way the Apple DVCPRO 100 codec is handling the conversion to RGB.

Go into Photoshop or wherever and look at the individual channels. On the ear, those long upright clumps of color banding have nothing to do with the camera...

...That's the codec speaking to you. Now I know nothing about FCP or this codec, maybe there's a way to change how it does the color dithering.

This is the same problem you see with miniDV... where reds block up in sharp clumps. Yes, this is 4:2:2 vrs 4:1:1 but the same issues apply.

Codecs are either designed for multigeneration duplication (where you don't want to smoothly dither the color over the luma) or presentation (where you do). Hardware output of DV always does dithering, that's why some folks prefer to do keys from the component or Svideo outputs of DV decks.

Just an FYI...

Jim Arthurs

[Mr. Blonde]

Michael, so what have you say on on the HVX after viewing it on the Pioneer plasma vs the H1?

[Haakon]

Your dead on...
My dead on what? :thumbsup:

I noticed your HVX example with "scratch pad grading." I'm seeing "grading" used more and more these days... is this just a kind of color correction, or what is it implying, specifically?

P.S. - All of your new posts say 2005... just to let ya know! :)

[PappasArts]

Hi!

Ahh, you caught that.

Lets see, ummm, what word comes to mind. "" MotherFu*$#@# "" awesome looking.

I have some pictures of the pioneer screen dispalying the shots ; I will post them up later! That is one amazing montior too. Anyway I'll report on it later.


LINK TO HVX200/XLH1 MATERIAL: http://www.pbase.com/Arrfilms

Michael Pappas
Arrfilms@hotmail.com
PappasArts & Arrfilms Main site
http://www.pbase.com/Arrfilms
http://www.PappasArts.com
http://www.Myspace.com/


Michael, so what have you say on on the HVX after viewing it on the Pioneer plasma vs the H1?

[PappasArts]

Damn, I keep on doing that. I almost wrote a check like that!

Thanks for pointing that out!





P.S. - All of your new posts say 2005... just to let ya know! :)

[brianluce]

will keying with dv50 look this good? any samples?

[bgundu]

http://10framehandles.com/movies/HVX_Comp_BobGundu.mov

Composited in Shake.