Chroma (?) quality flaws in original BDs?

moviefan · 16th June 2009, 13:40

Hi guys,

I have noticed that really every Blu-ray disc I have watched so far, about 15, contains really annoying quality flaws, very often in areas of brown tones of middle brightness. Rather bright and rather dark scenes are ok mostly, but the medium brightness ones suffer very annoyingly from bad quality. Is this normal or do I have problems with settings in my player? I use MPC-HC latest version with DXVA support in overlay-mode and watch the movies on a Samsung LC52M86BD display via HDMI with DNIe turned on. Even if I turn that off, the issues are visible though less obvious. I think it's a problem with chroma encoding or the Blu-rays masters are bad. When it comes to reencoding them, even with really slow settings with x264 with about 7-8 Mbps, the quality is "awful" in thos problem areas. I will upload sample pictures soon...

Regards
moviefan

Lyris · 16th June 2009, 15:06

Quote:

Samsung LC52M86BD display via HDMI with DNIe turned on.

The problem sounds like your display setup exacerbating otherwise non-obvious flaws in the disc.

I would recommend having your display professionally calibrated to avoid issues like this. The problem is that TV manufacturers build in all sorts of goofy performance tweaks and useless "enhancers" to make their product stand out, and these more than always ruin the picture quality.

Turn DNIe and all of these "enhancement" features off, and make sure basic controls like Brightness, Contrast and Sharpness are set properly.

Emulgator · 17th June 2009, 13:28

I see this as Lyris describes.

In my case a Loewe 32" (with a otherwise nice FullHD display panel) is screwed up by its firmware.
Other manufacturers do this as well...

After each and every power-up always something like a additional S-curved gradation overlay ("Image+")
is brought up and my "deactivate" setting not remembered.
As if somebody would fear customers not buying into if colurs won't scream...
This destroys all that good work that went into any disc.
Oversaturated colours, shadows clipped into black, too bright lights.
Once this is overruled, all becomes natural...

And you may set all sharpening to zero.
In my case this kept me from using this panel as secondary monitor for the first week,
each font, each window border had echoes.

16th June 2009, 13:40	#1 \| Link
moviefan Registered User Join Date: Jul 2005 Posts: 438	Chroma (?) quality flaws in original BDs? Hi guys, I have noticed that really every Blu-ray disc I have watched so far, about 15, contains really annoying quality flaws, very often in areas of brown tones of middle brightness. Rather bright and rather dark scenes are ok mostly, but the medium brightness ones suffer very annoyingly from bad quality. Is this normal or do I have problems with settings in my player? I use MPC-HC latest version with DXVA support in overlay-mode and watch the movies on a Samsung LC52M86BD display via HDMI with DNIe turned on. Even if I turn that off, the issues are visible though less obvious. I think it's a problem with chroma encoding or the Blu-rays masters are bad. When it comes to reencoding them, even with really slow settings with x264 with about 7-8 Mbps, the quality is "awful" in thos problem areas. I will upload sample pictures soon... Regards moviefan

17th June 2009, 13:28	#3 \| Link
Emulgator Big Bit Savings Now ! Join Date: Feb 2007 Location: close to the wall Posts: 2,087	I see this as Lyris describes. In my case a Loewe 32" (with a otherwise nice FullHD display panel) is screwed up by its firmware. Other manufacturers do this as well... After each and every power-up always something like a additional S-curved gradation overlay ("Image+") is brought up and my "deactivate" setting not remembered. As if somebody would fear customers not buying into if colurs won't scream... This destroys all that good work that went into any disc. Oversaturated colours, shadows clipped into black, too bright lights. Once this is overruled, all becomes natural... And you may set all sharpening to zero. In my case this kept me from using this panel as secondary monitor for the first week, each font, each window border had echoes.