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Re: SD output darker than HD output

Date : Thu, 29 Sep 2005 00:13:11 +0200
To : DS(at)Softimage.COM
From : Andi Loor <andiloor(at)algonet.se>
Subject : Re: SD output darker than HD output 
From the DS Support Console:
Andi

*The color are incorrect when using the HD Monitor output. *

   Improper settings for Color Space: In Avid DS go to Output Tool >
   Video Output > HD Analog Out > Color Space and verify the selection
   between RGB or YCbCr until you get the proper result.





Espiritu VFX wrote:

Pat,

MY WFM is a SD one, so I can't check both values.

But I found a big difference in the WFM comparing
Nitris-----> Digi vs Nitris----->HDVTR--Donconvert--->Digi

But I must go today for 8 days, and I can't test anymore until I come back,
but all of you see the HD an SD outputs in the same level of luma? I'll try
to check in another Nitris when I come back!

Regards,
Nacho


----- Original Message -----
From: <pat-list(at)horridge.demon.co.uk>
To: "DS Mailing List" <DS(at)Softimage.COM>
Sent: Tuesday, September 27, 2005 12:10 PM
Subject: RE: SD output darker than HD output




Surely you have a waveform monitor and check the levels at each stage to
find out where the error is?
The route you describe below has a number of steps that may be interfering
with the level (like the down-convert)




-----Original Message-----
From: Espiritu VFX [mailto:vfx_list(at)fibertel.com.ar]
Sent: Tuesday, September 27, 2005 12:39 AM
Subject: SD output darker than HD output

This is a multi-part message in MIME format.

- ------=_NextPart_000_01CE_01C5C2DA.577D0F80
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Guys,

I can see that the SD output from Nitris is darker than the HD output.

To test it I outputted from Nitris to Digibeta and then to HD
VTR and = downconverted from there to Digibeta and the first
one is darker than = the second one.  Anyone knows why?

I'm worried about this because we did a whole series of 9
short films in = HD and we have to deliver HD and SD copies
and both should look the = same.

Thanks for any help,
Nacho

PS: If the question is why didn't I output to HD and then
downconvert = from there, the answer is that the DC from the
HDW2000 looks worse than = Nitris one. If anyone knows of any
setting I should change in the = HDW2000 pls advise me!!!!


- ------=_NextPart_000_01CE_01C5C2DA.577D0F80
Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0
Transitional//EN"> <HTML><HEAD> <META
http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1"> <META content=3D"MSHTML
6.00.2800.1106" name=3DGENERATOR> <STYLE></STYLE> </HEAD>
<BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial
size=3D2>Guys,</FONT></DIV> <DIV><FONT face=3DArial
size=3D2></FONT>&nbsp;</DIV> <DIV><FONT face=3DArial
size=3D2>I can see that the SD output from = Nitris is
darker=20 than the HD output.</FONT></DIV> <DIV><FONT
face=3DArial size=3D2></FONT>&nbsp;</DIV> <DIV><FONT
face=3DArial size=3D2>To test it I outputted from Nitris to =
Digibeta and=20 then to HD VTR and downconverted from there
to Digibeta and the first = one is=20 darker than the second
one.&nbsp; Anyone knows why?</FONT></DIV> <DIV><FONT
face=3DArial size=3D2></FONT>&nbsp;</DIV> <DIV><FONT
face=3DArial size=3D2>I'm worried about this because we did a
= whole=20 series of 9 short films in HD and we have to
deliver HD and SD copies = and both=20 should look the
same.</FONT></DIV> <DIV><FONT face=3DArial
size=3D2></FONT>&nbsp;</DIV> <DIV><FONT face=3DArial
size=3D2>Thanks for any help,</FONT></DIV> <DIV><FONT
face=3DArial size=3D2>Nacho</FONT></DIV> <DIV><FONT
face=3DArial size=3D2></FONT>&nbsp;</DIV> <DIV><FONT
face=3DArial size=3D2>PS: If the question is why didn't I =
output to HD=20 and then downconvert from there, the answer
is that the DC from the = HDW2000=20 looks worse than Nitris
one. If anyone knows of any setting I should = change in=20
the HDW2000 pls advise me!!!!</FONT></DIV> <DIV><FONT
face=3DArial size=3D2></FONT>&nbsp;</DIV> <DIV><FONT
face=3DArial size=3D2></FONT>&nbsp;</DIV></BODY></HTML>

- ------=_NextPart_000_01CE_01C5C2DA.577D0F80--

------------------------------




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--
Andi Loor
www.andiloor.se

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