Apple Motion 5.1.1 - Manual (Page 1057)

Chapter 26 Video and file formats 1057
Standard-definition (SD) video displays
Standard-definition (SD) video displays differ from computer displays in a significant way (aside
from interlacing)—computer displays represent images using a grid of square pixels, while SD
video displays use rectangular pixels.
720 x 486 Broadcast
(720 x 480 DV)
640 x 480
SD NTSC pixels are narrower than computer pixels and SD PAL pixels are wider than computer
pixels. As a result, a 720 x 486 pixel image looks different on a computer display than it does on
a video monitor. For example, if you capture a clip of video with a globe in the picture, export a
frame, and look at this frame in a graphics application, you’ll see something like this:
Looks right
on a video monitor
NTSC square vs. nonsquare pixels example
Looks wrong
on a computer monitor
To display nonsquare pixel video correctly in Motion, choose Correct For Aspect Ratio in the View
pop-up menu above the Canvas.
Note: Because full-raster high-definition and 4K video use only square pixels, their images always
appear correctly when displayed on SD video displays.
Differences in color between computer graphics and video
The range of colors that can be displayed on a broadcast video monitor employing the Rec. 709
video standard for gamut and gamma is different than the range of color that can be displayed
on your computer. For this reason, colors that appear bright and clean on a video display may
seem duller when viewed on your computer.
Further, if you output media that exceeds the “broadcast-legal” range for video, some colors
appear oversaturated, and may “clip” or “bleed” into other parts of the image. This distortion can
be avoided by controlling the palette of colors you use in your graphics and animations. As you
create the composite you’ll be outputting to video, resist the temptation to use the brightest and
most saturated shades of color available.
67% resize factor