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Old 06-30-2011, 12:47 PM
 
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Quote:
Originally Posted by texdav View Post
No;HD can be broadcast in smaller aspect ratios. Look at the cable box it will tell you the HD quailty like 720i.1080i etc of the signal.

Those are resolutions, not aspects but both are used for 16:9 display*.

Aspect is the horizontal/vertical ratio.

To even further complicate things resolution does not necessarily determine display aspect. 720*480 DVD is neither 4:3 or 16:9 when displayed at it's native pixel size but can be displayed as either 4:3 or 16:9.

This is a raw 720*480 frame from DV that was recorded in 16:9, note the "lite" circles have an oval shape and everyone looks tall and skinny.




This is flagged as 16:9 on the DVD, for display on a 4:3 TV black bars are added by the DVD player to maintian the correct aspect ratio:

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Old 07-01-2011, 03:00 PM
 
Location: Reston, VA
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Quote:
Originally Posted by thecoalman View Post
This is wide screen TV? There's black strip left and right too?

It gets a little complicated because of different sources, what is being broadcast and the devices. They can be part of the source or created by the device.

For example if the source is wide-screen(16:9) but the broadcaster is broadcasting in 4:3 instead of stretching the frame they will add black bars top and bottom. If you're viewing this on regular 4:3 TV you'll get black bars top and bottom.

When you view this on wide screen TV it adds black bars left and right, the reason it's not stretched out full screen is because it's 4:3 signal and the black bars are part of the video. In this case we have the black bars top and bottom from the source and the ones left and right from the device.



-----------

The reason this is done is to provide a full frame of the original video and maintain aspect. For example if you're viewing a DVD on 4:3 TV the DVD player adds black bars top and bottom. Other wise everyone will look tall and skinny and round objects will take on a egg like shape.
Yes, this is a wide screen TV. The black bars are just on the top and bottom.
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Old 07-02-2011, 08:39 AM
 
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You probably have the TV set to "stretch" and what is happening is the broadcast is sent like this:




Under "normal" the TV adds black bars left and right. When you stretch it to full screen the black bars don't go away because it's part of the video. In addition to that you're screwing up the aspect, look at the picture and the people will proabaly look a little chubby and short, round objects will have a egg like shape but opposite of the one I posted above.

There is really only two modes you want to use, "Normal" and "Zoom". If you get a picture that has black all the way around use Zoom instead of stretch, it will fill out the whole screen and the black bars will go away.
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Old 07-04-2011, 11:22 PM
 
Location: Reston, VA
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Thanks very much to one and all!
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