Posted by Bill's News on 01/16/70 11:54

Phat Bytestard wrote:
> On Tue, 20 Jun 2006 01:12:27 -0400, Derek Janssen
> <ejanss@nospam.comcast.net> Gave us:
>
>> Maybe HD's are a little "neater" than DVD's, but they ain't
>> the
>> quantum leap to make us turn against DVD's like a pack of
>> jackals--
>> Remember CD's and vinyl, or word processors and typewriters:
>> To
>> become a "replacement" technology, the new gizmo has to make
>> you
>> *LOATHE AND DESPISE* the old technology...
>
> Total crap.
>
> 6 times the resolution IS a quantum leap. You (obviously)
> and other
> folks just have not realized that fact yet.

Yes, 1920x1080 / 720x480 = 6, but the visual comparison doesn't
start or stop there.
Using a medium or large wide-screen TV with 1920x1080 res, the
resizing (up-converting) algorithms applied to 720x480 DVDs
narrow the perceptual gap considerably and this is why so many
wonder "What's all the hullabaloo about?"

Is BR or HD significantly better than DVD on the same equipment?
Now my only side-by-side (or input source switching) comparison
is cable HD-TV, 1920x1080i at about 20 mbps vs. DVD 720x480i
anamorphic 1.85 at about 7 mbps. Given similarly bright and
colorful images, there's not much of a difference.

Also, as you can see in the example cited, the bits per pixel
rate is higher for the DVD as the bit rates are closer to 3:1
while the frame size is 6:1.

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