User Guide

Corel Painter 431
video). This is the video standard
used in the United States.
• The frame rate of PAL video is
25 fps.
These frame rates are sufficient to
produce smooth, continuous motion
with filmed or video-recorded
subjects.
Animation drawings contain far less
detail than live-action images. The
difference in the level of detail allows
animations to be produced at frame
rates significantly below those
designed for live action. Because of the
smoothness of color fills and
continuity between images,
animations can look quite nice at rates
between 10 and 15 frames per second.
You must consider frame rates to know
how many drawings are needed to
make actions smooth, natural, and
consistent throughout the project.
The computer can display frames at
any reasonable rate. You’ll define the
rate after creating the artwork. The
Frame Stacks palette does not provide
control over frame display rates. For
more control over display rates, save
the movie as QuickTime or AVI.
You can’t display different sections of a
movie at different rates. What you can
do is create sections separately at
different rates, then modulate them to
the same rate before joining them.
This is the kind of work you’ll do in
your video-editing application.
Movies and File Size
Keep in mind that video and
animation can produce huge files.
When planning a project, be careful
you don’t over-estimate your available
disk space. To get an idea of disk
requirements, consider this example:
Each 640 by 480, 24-bit color frame is
1.2 MB. At this size, a 12 fps, 30-
second animation would consume
more than 400 MB of disk space.
To calculate the disk space
required for a frame stack:
1 (Frame Width) X (Frame Height)
X (Bytes per Pixel) X (number of
frames)= Bytes required to save
the frame stack.
2 Divide by 1024 to convert to
kilobytes.
Notes
•
Bytes per Pixel is determined by the
storage type. For example, 24-bit color
with an 8-bit alpha channel uses 4 bytes
per pixel. For more information about
storage types, refer to “Creating a Movie”
on page 425.
•
When you save a movie as QuickTime
or AVI, the file size can be reduced by
compression. For more information on
compression, refer to “Saving and
Exporting Movies” on page 438.
Combining Movies
You can combine movies by inserting
the contents of one movie into
another.
You can insert only a Corel Painter
movie, not a QuickTime or AVI movie
or numbered files. Convert your
movie to a Corel Painter frame stack
before trying to insert it.
The movie you insert must have the
same frame size (width and height) as
the current movie.