User Guide

Preparing Still Image Assets 47
Still Images for 16:9 Widescreen
When creating still images for a 16:9 Widescreen project, special steps are required to
ensure that the images are displayed correctly. You should create the images initially at a
resolution of 960 x 480 for NTSC and 960 x 576 for PAL. Then, just before importing the
image into Scenarist, resize the image to 720 x 480 for NTSC and 720 x 576 for PAL,
therefore recreating the anamorphic squeezing effect that is performed on widescreen
video. When the content is played back, it will be stretched back to its original widescreen
aspect ratio.
Preparing a YUV File
YUV image files (images created using the YUV color space, which is used by the NTSC and
PAL color video standards) lack the information headers and file extensions that exist in
JPEG, TIFF, BMP, and other graphics file formats. Without an information header, Scenarist
cannot read a YUV file. However, Scenarist can handle a YUV file if you perform the
following steps:
• Add a .yuv extension to the file name.
• Adjust the image size to 720 x 480 for NTSC and 720 x 576 for PAL.
Scenarist supports the YUV color space in the ratio 4:2:0 in the sequence, Y data (luma)
followed by U data (color) followed by V data (color). If the original ratio is 4:2:2, it must be
converted to 4:2:0 before Scenarist can use it.