Re: WS TVs & standard dvds???

On Fri, 31 Aug 2007 12:15:40 -0400, Kimba W. Lion <kimbawlion> wrote:

phil-news-nospam@xxxxxxxx wrote:

The DVD widescreen movies in 16:9 are only 360 lines high.

That's only true if the DVD isn't anamorphic. I only have one DVD like
that. All the others use the full 480 vertical pixels available.

A distinction must be made when talking about "widescreen".
There are two aspect ratios to care about.
1) Signal aspect ratio. This is for TV use either 16:9 or 4:3.
The signal shall be displayed in the correct ratio to get correct
geometry.
2) Both these signal aspect ratios can have a picture content (with
surrounding, often black, bars or pillars.)

The expression "widescreen" is not enough to discribe what is meant.

(In principle the term "anamorphic" doesn't mean anything physically
relavant for an electrical video signal, altough I understand where it
comes from.)

My brother's new 32" Vizio set has a zoom button on the remote, but nothing
happens when using it for any content provided.

I've only seen that happen on digital TV broadcasts, where the station is
sending a full widescreen picture even thought the content may be
pillarboxed or even windowboxed.

Some TV:s reduce the zoom options when receiving HD signals (like
'upconverted' by a DVD player/recorder). This can affect both on HDMI
and Component inputs.

/Jan
.

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