Color changes during preview

Tim Homola · May 4th, 2007, 12:27 PM

I uninstalled Aspect and everything works fine now. Hmmmmm.... I would really like to use Aspect but I've got to get this fixed or work without it.

David Newman · May 4th, 2007, 12:32 PM

ATI only tends to get the YUV levels correct with the overlay switch on. I use an ATI 9800Pro and the levels are spot on.

Tim Homola · May 4th, 2007, 12:33 PM

Actually, I spoke too soon. Things are still screwed up. I'm working on it.

Brad Tyrrell · August 8th, 2007, 12:29 PM

Just thought I'd mention, - I had the same brightness shift between stills and playback, but I don't have a card. I have Intel Integrated Graphics.

I went to the control panel, opened up the GMA driver control, increased the overlay brightness from 7 to 17 and now everything matches. Don't know how accurate anything is, but stills match scrub match playback.

Rafael Lopes · September 25th, 2007, 11:47 PM

I have an nvidia card and I have the same problem. I was thinking about getting a matrox parhelia, since it's one of the official cards supported by aspect hd (and since, according to David Newman gets it all right). Is anyone with this card experiencing the same problem?

Matt Vanecek · January 1st, 2008, 05:30 PM

I have the GeForce 6600 video card installed. I also have the 169.21 Forceware installed, and there is not an option to go to the "Classic" view. So there is not any overlay settings that I can find in the new nVidia control panel.

Here are my project playback settings:

checked: Enable Overlay Surface
unchecked: De-interlace video
checked: Use HD Colorspace
checked: Use video systems RGB
unchecked: Disable preview mode
checked: Force YUV Desktop playback
Memory size: Max

When scrubbing through my AHD project in PPro 1.5.1, using AHD 5.2.2b101, there is a significant brightness gain during scrubbing as opposed to simply viewing. Changing the settings in the nVidia control panel does not have any effect on the levels difference between scrubbing and holding still (overall screen levels are changed, of course--but there is still a noticeable difference between scrubbing and not scrubbing). I've changed about every setting in nVidia control panel WRT video, and while the changes were definitely reflected in the video playing, the relative level difference between scrubbing & not scrubbing was always quite evident.

I uninstalled 5.2.2b101, and regressed to 5.2.1b98. There is now no discernable difference between scrubbing and playing, with respect to levels. There's still some blur going on during scrubbing, but I think that's expected.

It appears from my empirical efforts that there is a problem with 5.2.2b101. Could somebody besides myself confirm this? I'm only reporting what my eyes are seeing....if I need to I can file a trouble ticket.

I don't much care for the new nVidia interface, but I'm not sure how to get the old interface back without regressing drivers. :(

Thanks,
Matt

Matt Vanecek · January 1st, 2008, 09:15 PM

Just as an update, I returned my GeForce driver to the previous level (89.91 or something like). AHD 5.2.1 still works great, but AHD 5.2.2b101 still exhibits the disturbing level change between still and scrub.

ciao,
Matt

Matt Vanecek · January 2nd, 2008, 11:17 PM

I went ahead and opened trouble ticket #611-5530276 on this, since there is definitely a difference between 5.2.1b98 and 5.2.2b101. 5.2.2b101 seems like it's ignoring the YUV settings or video card settings or whatever. I attached screen shots of my CF playback settings, the nVidia color correction settings, and the nVidia Video Overlay settings. The settings I attached in the ticket work on 5.2.1b98, but nothing works on 5.2.2b101.

Thanks,
Matt

David Newman · January 2nd, 2008, 11:25 PM

This scrubbing error is actually not related for thread about preview playback. However, I believe have have just fixed it. New builds hopefully in the next few days.

Matt Vanecek · January 3rd, 2008, 08:28 PM

w00t! I'll keep a weather eye out.

Thanks,
Matt

Michael DAmbrose · January 12th, 2008, 10:08 AM

So, Is there a way to scrub/preview with the proper brightness/contrast when using AspectHD and PremierePro? I am going nuts trying to get the image right. The cookbook setting found when searching this forum were for the old Nvidia driver.

Still this is a bug in Cineform in my opinion.

Graham Hickling · January 12th, 2008, 02:36 PM

Yup - download the latest version of Aspect HD and uncheck "Force YUV" in playback settings. On my Nvidia GS7600 doing this fixed the issue perfectly.

I agree that the advice on the Cineform website has no longer been applicable for recent Nvidia drivers.

Michael DAmbrose · January 12th, 2008, 03:03 PM

I just downloaded Build 104 and it works with the Force YUV off. Graham, thanks for the help!

May 4th, 2007, 12:32 PM	#17
David Newman CTO, CineForm Inc. Join Date: Jul 2003 Location: Cardiff-by-the-Sea, California Posts: 8,095	ATI only tends to get the YUV levels correct with the overlay switch on. I use an ATI 9800Pro and the levels are spot on. __________________ David Newman -- web: www.gopro.com blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman

January 1st, 2008, 05:30 PM	#21
Matt Vanecek Major Player Join Date: Jul 2005 Location: Denton, TX Posts: 334	5.2.2b101 Exacerbates black level I have the GeForce 6600 video card installed. I also have the 169.21 Forceware installed, and there is not an option to go to the "Classic" view. So there is not any overlay settings that I can find in the new nVidia control panel. Here are my project playback settings: checked: Enable Overlay Surface unchecked: De-interlace video checked: Use HD Colorspace checked: Use video systems RGB unchecked: Disable preview mode checked: Force YUV Desktop playback Memory size: Max When scrubbing through my AHD project in PPro 1.5.1, using AHD 5.2.2b101, there is a significant brightness gain during scrubbing as opposed to simply viewing. Changing the settings in the nVidia control panel does not have any effect on the levels difference between scrubbing and holding still (overall screen levels are changed, of course--but there is still a noticeable difference between scrubbing and not scrubbing). I've changed about every setting in nVidia control panel WRT video, and while the changes were definitely reflected in the video playing, the relative level difference between scrubbing & not scrubbing was always quite evident. I uninstalled 5.2.2b101, and regressed to 5.2.1b98. There is now no discernable difference between scrubbing and playing, with respect to levels. There's still some blur going on during scrubbing, but I think that's expected. It appears from my empirical efforts that there is a problem with 5.2.2b101. Could somebody besides myself confirm this? I'm only reporting what my eyes are seeing....if I need to I can file a trouble ticket. I don't much care for the new nVidia interface, but I'm not sure how to get the old interface back without regressing drivers. :( Thanks, Matt

January 2nd, 2008, 11:25 PM	#24
David Newman CTO, CineForm Inc. Join Date: Jul 2003 Location: Cardiff-by-the-Sea, California Posts: 8,095	This scrubbing error is actually not related for thread about preview playback. However, I believe have have just fixed it. New builds hopefully in the next few days. __________________ David Newman -- web: www.gopro.com blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman

January 12th, 2008, 03:03 PM	#28
Michael DAmbrose Regular Crew Join Date: Jul 2005 Location: Middletown, CT Posts: 49	Nice! I just downloaded Build 104 and it works with the Force YUV off. Graham, thanks for the help!

May 4th, 2007, 12:27 PM	#16
Tim Homola Regular Crew Join Date: Apr 2007 Location: Chicago, IL Posts: 30	I uninstalled Aspect and everything works fine now. Hmmmmm.... I would really like to use Aspect but I've got to get this fixed or work without it.

May 4th, 2007, 12:33 PM	#18
Tim Homola Regular Crew Join Date: Apr 2007 Location: Chicago, IL Posts: 30	Actually, I spoke too soon. Things are still screwed up. I'm working on it.

August 8th, 2007, 12:29 PM	#19
Brad Tyrrell Major Player Join Date: Oct 2003 Location: Morristown, New Jersey Posts: 249	Just thought I'd mention, - I had the same brightness shift between stills and playback, but I don't have a card. I have Intel Integrated Graphics. I went to the control panel, opened up the GMA driver control, increased the overlay brightness from 7 to 17 and now everything matches. Don't know how accurate anything is, but stills match scrub match playback.

September 25th, 2007, 11:47 PM	#20
Rafael Lopes Trustee Join Date: Sep 2005 Location: Rio de Janeiro Posts: 1,239	I have an nvidia card and I have the same problem. I was thinking about getting a matrox parhelia, since it's one of the official cards supported by aspect hd (and since, according to David Newman gets it all right). Is anyone with this card experiencing the same problem?

January 1st, 2008, 09:15 PM	#22
Matt Vanecek Major Player Join Date: Jul 2005 Location: Denton, TX Posts: 334	Just as an update, I returned my GeForce driver to the previous level (89.91 or something like). AHD 5.2.1 still works great, but AHD 5.2.2b101 still exhibits the disturbing level change between still and scrub. ciao, Matt

January 2nd, 2008, 11:17 PM	#23
Matt Vanecek Major Player Join Date: Jul 2005 Location: Denton, TX Posts: 334	I went ahead and opened trouble ticket #611-5530276 on this, since there is definitely a difference between 5.2.1b98 and 5.2.2b101. 5.2.2b101 seems like it's ignoring the YUV settings or video card settings or whatever. I attached screen shots of my CF playback settings, the nVidia color correction settings, and the nVidia Video Overlay settings. The settings I attached in the ticket work on 5.2.1b98, but nothing works on 5.2.2b101. Thanks, Matt

January 3rd, 2008, 08:28 PM	#25
Matt Vanecek Major Player Join Date: Jul 2005 Location: Denton, TX Posts: 334	w00t! I'll keep a weather eye out. Thanks, Matt

January 12th, 2008, 10:08 AM	#26
Michael DAmbrose Regular Crew Join Date: Jul 2005 Location: Middletown, CT Posts: 49	So, Is there a way to scrub/preview with the proper brightness/contrast when using AspectHD and PremierePro? I am going nuts trying to get the image right. The cookbook setting found when searching this forum were for the old Nvidia driver. Still this is a bug in Cineform in my opinion.

January 12th, 2008, 02:36 PM	#27
Graham Hickling Trustee Join Date: May 2004 Location: Knoxville, Tennessee Posts: 1,669	Yup - download the latest version of Aspect HD and uncheck "Force YUV" in playback settings. On my Nvidia GS7600 doing this fixed the issue perfectly. I agree that the advice on the Cineform website has no longer been applicable for recent Nvidia drivers.