Up and down conversion, Video scaling & f rame r at e con ver sion – Sound Devices PIX 220i User Manual

Page 35

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background image

Orange

: No 3:2 pulldown sensed in 60i/59.94i input signal. In-

put video is being converted to 24p/23.976p using a conversion

process which drops frames and may introduce judder.

White

: 3:2 pulldown sensed in 60i/59.94i input video signal.

Input video signal is being converted to 24p/23.976p using 3:2

pulldown removal which recreates 24p/23.976p as it is cap-

tured from the camera’s shutter.

Up and Down Conversion

Standard-definition video resolution employs a 4:3 aspect ratio, and high-definition video resolution

employs a 16:9 aspect ratio. Up-conversion is the process of fitting standard-definition video (with a

4:3 aspect ratio) into a high-definition, 16:9 frame. Down-conversion is the opposite process.
PIX recorders have various options for up and down conversion:

Down-Conversion

Letterbox

: Maintains the same height and width ratio. Results in blank bar at top and bottom of im-

age.

Crop

: Left and right side of image is cropped to fit into 4:3. Results in missing image at sides of pic-

ture.

Anamorphic

: Image is horizontally squashed to fit into 4:3. Results in a narrow looking image.

16

9

4

3

Letterbox

Crop

Anamorphic

V

ideo Scaling & F

rame R

at

e Con

ver

sion

PIX 220i and PIX 240i Video Recorder User Guide

33

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