Adobe PREMIERE 5 - Frames Are Dropped When Capturing Clips; General Operating Problems

APPENDIX B
358
Compressing Video and Audio
16-bit Big Endian and 16-bit Little Endian Useful when audio must be stored using Big Endian or
Little Endian (byte order) encoding, such as when preparing microprocessor-specific audio.
These codecs are useful for hardware and software engineers but are generally not useful for
video editing.
24-bit Integer and 32-bit Integer Useful when the audio data must be stored using 24-bit or
32-bit Integer encoding, such as when preparing microprocessor-specific audio. These codecs
are useful for hardware and software engineers but are generally not useful for video editing.
IMA 4:1 Useful for cross-platform audio for multimedia. IMA 4:1 was developed by the IMA
using ADPCM.
32-bit Floating Point and 64-bit Floating Point Useful when audio must be stored using 32-bit
or 64-bit floating point encoding, such as when preparing microprocessor-specific audio.
These codecs are useful for hardware and software engineers but are generally not useful for
video editing.
ALaw 2:1 Similar to µ Law, but used primarily for digital telephony in Europe.
QDesign Music Codec Useful when compressing high-quality music for Internet distribution.
It is capable of delivering CD-quality (16-bit, 44.1 kHz) audio over a 28.8 Kbps line.
Qualcomm PureVoice Intended for speech; works best at 8 kHz. Based on the Code Division
Multiple Access (CDMA) technology standard for cellular telephony.
MACE 3:1 and MACE 6:1 Useful as a general-purpose audio codec. The Macintosh Audio
Compression and Expansion codec (MACE) has been built into the Mac OS Sound Manager
for many years. MACE 3:1’s lower compression ratio provides higher quality than MACE 6:1.
Because it is provided with QuickTime 3.0, it is also accessible in Windows when QuickTime
is installed.
c00.book for PS Page 358 Tuesday, March 31, 1998 1:28 PM