Posted by Martin Heffels on 08/19/06 22:54

On 19 Aug 2006 14:45:50 -0700, "mmaker@my-deja.com" <mmaker@my-deja.com>
wrote:

>Martin Heffels wrote:
>> But you're making up 0:2:2 to get your 4:4:4!
>
>?
>In 1080i HDV you have 1440x1080 8-bit luminance

The amount of pixels will depend on the camera you have.

> pixels with 720x540
>color values. Scale that down to SD NTSC or PAL and you have
>approximately one color value and 10 bits of luminance data per pixel.

Say what? When you scale up, you have to make-up (interpolate)
chroma-samples. HDV is 4:2:2 so sampling down to DV won't make it magically
4:4:4. And your luminance won't go up either from 8 to 10 bits, without
interpolating.

-m-
--

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