10bit vs. RGB 10bit

Blackmagic Design

10bit vs. RGB 10bit

Posted by Kurt on February 22, 2007 at 3:48 am

Can someone please shed some light on what the difference is between these two codecs?

The reason I am asking is that I’ve rendered from After effects into the BlackMagic 10bit codec (also the Apple Uncompressed 10bit), and these files DO NOT look how they should, whereas if I render into the BlackMagic RGB 10bit, they look good.

The image is made up of lots of small line drawn detail and type, so its more noticable here. But still, I am very confused. Why would the image look different? Very disconcerting.

thanks
Kurt

Kristian Lam replied 19 years, 2 months ago 3 Members · 5 Replies
5 Replies

Margus Voll
February 22, 2007 at 5:56 am

Hi.

I assume that just 10 bit sees colours etc differently (yuv maybe makes it).
I have encountered something similar with combustion.

If i render to 8 bits 4:2:2 then image gets a bit darker than the original.
If i do it with 10 bit 4:4:4 or rgb then it is fine.

Base material is 8 bit.

It seems to me as RGB and CMYK differ littelebit in print world
so in video RGB and YUV have a slight difference also.
Logic behind those differ a bit.

Meybe i’m wrong but its just my idea.

—

Margus

https://iconstudios.eu
Kurt
February 22, 2007 at 10:28 pm

I could see that RGB and YUV could be different, but what I’m noticing is a difference in image quality and resolution

It appears to me that the BlackMagic RGB 10bit is sililiar in quality to Quicktime None, while the regular 10bit codec, and Apples 10bit codec (which is 4:2:2 incidentally) have a lower quality.

confused

Kurt
Kristian Lam
February 22, 2007 at 11:09 pm

Hi,

The RGB 10-bit codec (HD only) is also 4:4:4 so the quality will be much better.

regards

Kristian Lam
Blackmagic Design
Kurt
February 23, 2007 at 12:05 am

>Hi,

>The RGB 10-bit codec (HD only) is also 4:4:4 so the quality will be much better.

What does that mean? And, I was referring to the Apple 10bit codec.

I’ve been working with this stuff all day today. I definately notice a quality difference between the normal BlackMagic 10bit, and the Blackmagic RGB 10bit

Can someone speak about this?

thanks
Kurt
Kristian Lam
February 23, 2007 at 2:51 am

Hi Kurt,

I would suggest this page for more information about 4:2:2 vs 4:4:4 :-

https://en.wikipedia.org/wiki/Chroma_subsampling

regards

Kristian Lam
Blackmagic Design

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