Color of DVD and Blu-ray Disc - Blu-ray Forum

ranma · 02-16-2008, 01:58 AM

When I first watched blu-ray disc, I was not only impressed by the resolution that blu-ray provided, but also the depth of the color. I checked several online technical articles, neither of them mentions the color space of DVD and blu-ray, as well as the blu-ray advertises. So I begin to wonder, is there difference of color depth in specs of BD and DVD, or it is just the higher bitrate and storage space that allow studios to get more colors into the transfer instead of heavily compress them?

ResOGlas · 02-16-2008, 02:02 AM

Yes, there is a difference in color depth.

ranma · 05-09-2008, 05:22 PM

I read somewhere that BD and DVD has same color space. So what makes BD looks so vivid? Because DVD didn't use full color space so that it can be compressed more? Or it simply is the more resolution makes you feel color is better too?

Cruyff14 · 05-09-2008, 06:23 PM

Quote:

Originally Posted by ranma

I read somewhere that BD and DVD has same color space.

They don't. DVD uses SMTP C, BD uses REC 709 which is slightly larger than SMTP C.

CptGreedle · 05-09-2008, 06:27 PM

Not to mention a larger bandwidth that allows for less compression, and thus better color.

Bobby Henderson · 05-09-2008, 06:41 PM

DVD Video has to comply with the color limitations of the old NTSC format. HDTV does not. Therefore the color on HDTV is more vibrant and better controlled.

The Blu-ray format has the additional capability above regular HDTV for "deep color" with bit depths per color channel greater than the normal 8-bit per channel range of normal RGB color.

Cruyff14 · 05-09-2008, 06:50 PM

Quote:

Originally Posted by Bobby Henderson

The Blu-ray format has the additional capability above regular HDTV for "deep color" with bit depths per color channel greater than the normal 8-bit per channel range of normal RGB color.

Deep color is irrelevant since there is no media that supports it yet as far as I know (Blu-Ray certainly doesn't).

Chevypower · 05-09-2008, 06:56 PM

The most simple answer i can think of, is COLORBURST (Chroma signal) in NTSC it is 3.58MHz. In PAL it is 4.43MHz (so PAL has more vibrant colors than NTSC) I never knew what the colorburst on HD was, but according to this it might be 30MHz? http://www.cepba.upc.es/docs/sgi_doc...html/go01.html
I will try to find the answer and get back

tron3 · 05-09-2008, 07:50 PM

Quote:

Originally Posted by CptGreedle

Not to mention a larger bandwidth that allows for less compression, and thus better color.

A.K.A bit rates.

Chevypower · 05-09-2008, 08:02 PM

Ok, this is the best I have found. With HD signals there is no subcarrier or colorburst which is found on NTSC and PAL. This results in a cleaner and more vibrant image.

02-16-2008, 01:58 AM	#1
ranma Senior Member Member since:Dec 2007 Blu-ray collection:321 Blu-ray reviews:3	Color of DVD and Blu-ray Disc When I first watched blu-ray disc, I was not only impressed by the resolution that blu-ray provided, but also the depth of the color. I checked several online technical articles, neither of them mentions the color space of DVD and blu-ray, as well as the blu-ray advertises. So I begin to wonder, is there difference of color depth in specs of BD and DVD, or it is just the higher bitrate and storage space that allow studios to get more colors into the transfer instead of heavily compress them?

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02-16-2008, 02:02 AM	#2
ResOGlas Active Member Member since:Jul 2007	Yes, there is a difference in color depth.

05-09-2008, 05:22 PM	#3
ranma Senior Member Member since:Dec 2007 Blu-ray collection:321 Blu-ray reviews:3	I read somewhere that BD and DVD has same color space. So what makes BD looks so vivid? Because DVD didn't use full color space so that it can be compressed more? Or it simply is the more resolution makes you feel color is better too?

05-09-2008, 06:27 PM	#5
CptGreedle Blu-ray Ninja Member since:Jul 2007 Location:Sworn super-hero now services Atlanta (and suburbs). Blu-ray collection:128 Blu-ray reviews:5	Not to mention a larger bandwidth that allows for less compression, and thus better color.

05-09-2008, 06:41 PM	#6
Bobby Henderson Power Member Member since:Jan 2008 Location:Oklahoma Blu-ray collection:96 Blu-ray reviews: 12	DVD Video has to comply with the color limitations of the old NTSC format. HDTV does not. Therefore the color on HDTV is more vibrant and better controlled. The Blu-ray format has the additional capability above regular HDTV for "deep color" with bit depths per color channel greater than the normal 8-bit per channel range of normal RGB color.

05-09-2008, 06:56 PM	#8
Chevypower Special Member Member since:Feb 2008	The most simple answer i can think of, is COLORBURST (Chroma signal) in NTSC it is 3.58MHz. In PAL it is 4.43MHz (so PAL has more vibrant colors than NTSC) I never knew what the colorburst on HD was, but according to this it might be 30MHz? http://www.cepba.upc.es/docs/sgi_doc...html/go01.html I will try to find the answer and get back

05-09-2008, 08:02 PM	#10
Chevypower Special Member Member since:Feb 2008	Ok, this is the best I have found. With HD signals there is no subcarrier or colorburst which is found on NTSC and PAL. This results in a cleaner and more vibrant image.

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