4.2

AAC (Advanced Audio Coding) Also called MPEG-4 Audio. A
standard way of compressing and encoding digital audio. AAC-
encoded files rival the quality of audio CDs and generally sound
as good as or better than MP3 files encoded at the same or even
a higher bit rate.
AC-3 (Audio Codec 3, Advanced Codec 3, Acoustic Coder 3) A
Dolby Digital compressed audio format often used for encoding
surround sound.
AIFF (Audio Interchange File Format) A cross-platform audio
file format developed by Apple. Like WAV files, AIFF files contain
“chunks” of information such as the Sound Data Chunk, which
contains the actual sample data, and the Common Chunk, which
contains sample rate and bit depth information.
Apple ProRes Apple ProRes codecs provide an unparalleled
combination of multistream, real-time editing performance,
impressive image quality, and reduced storage rates.
Apple ProRes codecs take full advantage of multicore processing
and feature fast, reduced-resolution decoding modes. All
Apple ProRes codecs support any frame size (including SD, HD,
2K, and 4K) at full resolution. The data rates vary based on codec
type, image content, frame size, and frame rate.
Apple ProRes includes the following formats:
Apple ProRes 4444 XQ: The highest-quality version of
Glossary