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Advanced Operations
For your reference
³I/P/B
To efficiently store video on DVD, common elements among frames are used in common, and different elements are recorded with each individual
frame. The frame that contains the common elements is called an I-picture, a complete frame in itself. A P-picture is calculated from past I or
P-pictures. The frame that fills in the spaces between the I-and P-pictures is called the B-picture.
I-pictures have the best picture quality, so they should be used when making picture adjustments.
³Frame
Individual images in a video or on the television are called frames.
³Field
Half of the video information (video signal) in a frame is called a field. With conventional TV systems, a single frame (a single screen) consists of
two fields.
³Frame still
The two fields are displayed alternately on the TV screen, so the image may be blurry. However, the image quality is better than field images.
³Field still
Only one field (half of the video information) is displayed on the TV screen, so the apparent resolution is low. However, there is no blurring on the
screen.
How different kinds of software appear on your television
DVD software is recorded in a variety of picture formats, and how they appear on your TV depends on the software, the kind of TV you have, and the
picture mode your TV is set to.
³Letterbox refers to pictures where black bands appear at the top and bottom.
³Pan and scan refers to pictures where part of the picture is cut off so it fills the whole screen.
The names given to the television picture modes depends on the make of your television. There may also be slight differences in how the pictures
appear on the screen. Refer to your television’s operating instructions for details.
Wide-screen, pan and scan
Wide-screen, non-pan and
scan
Regular (4:3)
Regular (4:3) letterbox
16:9
zoom mode
Top and bottom cut off
Top and bottom cut off
Full screen
16:9
full mode
Full screen
Screen stretched
horizontally
Letterbox with screen
stretched horizontally
4:3
Edges cut off.
Letterbox
Full screen
Letterbox
16:9
auto mode
Full screen
Full screen with black
bands at right and left
Letterbox with
extremities of picture
stretched.
Television and
picture mode
Software format