Cyber
Subject: My Picture Has Black
Bars, Is Stretched, Distorted, Or Too Large For The Screen (Aspect Ratio Adjustments)
An Explanation Of Aspect Ratios
And Why Aspect Ratios Cause Bars Or Distortion On Widescreen TVs.
Aspect
ratio is the ratio of the width of an image to its height.
For example, pictures
displayed in the 16:9 aspect ratio are 16 inches wide for every 9 inches they
are tall.
Television
sets are available in two major aspect ratios:
- 16:9, also known as
Widescreen.
- 4:3, also known as Standard
Definition, Normal,
or Full Screen.
TV broadcasts
and movies come in a variety of aspect ratios. Here are the most common:
- 16:9 (Examples: HD broadcasts and
some movies)
- 4:3 (Examples: Standard definition
programming and full screen movies)
- 1.85 Academy Flat (Examples:
Many widescreen, DVD, and Blu-ray movies)
- 2.35:1 Scope (Examples:
Many widescreen and Blu-ray movies)
The Consequences Of Multiple
Aspect Ratios
Because
there are two television aspect ratios and four major types of broadcast and
movie aspect ratios, the picture on your TV can appear in one of the three
states below depending on your TV type and the signal the TV is receiving:
- The image is stretched
horizontally. (People look stretched out so they are short and fat)
- There are bars (usually black
or gray) on the sides of the image or on the top and bottom, but no
distortion of the picture.
- There is no distortion or
bars. Everything appears as it should.
Illustrations of the 16:9 and 4:3 Aspect Ratios
To help you
understand how your wide screen TV displays a 16:9 picture, we’ve included an
example of a 16:9 picture and a 4:3 picture below.
On a widescreen TV (16:9
aspect ratio), the 16:9 picture covers the entire screen and displays with no
distortion.
Resolving Problems Caused by Aspect Ratio.
Below is
a list of common problems caused by the mismatch of aspect ratios and TV screen
sizes.
Click the
description of each problem to see a visual example of the problem and an
explanation of how to resolve it.
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