SOUNDBOOTH CS3
User Guide
67
•
CCITT u-Law
An older version of CCITT compression that requires slightly more processing than A-Law. This
compression scheme is the standard for North American and Japanese telephone systems.
•
GSM 6.1
Compresses audio at a ratio of 10:1. Outside of Japan, GSM is the most popular worldwide standard for
mobile phones.
•
DSP Group TrueSpeech (Windows XP only)
A competing standard for mobile phones, this scheme compresses
audio at a ratio of 15:1.
Sample Rate
Sets the rate at which audio is digitally sampled. Higher sampling rates support a wider frequency
range, increasing audio quality and file size. To determine the proper setting for common output types, see “Sample
rate” on page 14.
Note:
Though you can work with any sample rate in Soundbooth, your sound card may not be capable of playing all
rates properly. To determine supported sample rates, consult the documentation for the card.
Sample Type
Sets the audio bit depth. Higher bit depths provide more dynamic range and reduce distortion, though
they increase file size and processing time. To determine the proper setting for common output types, see “Bit depth”
on page 15.
Channels
Specifies whether the saved file contains one mono channel, two stereo channels, or six (5.1) surround
channels.
Advanced Settings
Provide codec-specific options. This option is not available for all codecs. For more information,
consult the documentation or website provided by the codec developer.
Video options
The following options are available in the Video section of the Save As dialog box:
Compressor
Specifies the video codec. The codecs available depend on the file format:
•
For DV AVI format, choose 24p if you’re working on a film-based project. Otherwise, choose the codec appro-
priate for you region (NTSC for North America and Japan, PAL for Europe and elsewhere).
•
For standard AVI or QuickTime format, choose None (for RGB) or Uncompressed (for other color models) to
produce uncompressed video. Or choose a codec to compress video. For more information, consult the codec
developer’s documentation or website.
Color Depth
Specifies the range of colors that pixels can display. Choose 256 Colors for low-bandwidth web
playback. Choose Thousands or Millions Of Colors for full-resolution video.
Frame Size
Specifies the dimensions, in pixels, of entire video frames. To constrain the frame size to that used by
conventional television, enter a 4:3 ratio. Increasing the frame size displays more detail but increases file size and
requires more processing.
Frame Rate
Specifies the number of frames per second. Increasing the frame rate produces smoother motion if
source clips use an equally high rate. However, higher rates increase file size.
Aspect Ratio
Specifies the dimensions of individual pixels. Choose an option that matches the output type. If the
aspect ratio (displayed in parentheses) is anything other than 1.0, the output type uses nonsquare, rectangular pixels.
Advanced Settings
Provide codec-specific options. This option is not available for all codecs. For more information,
consult the codec’s documentation or its developer’s website.
