Glossary

1080i (1080 line interlaced): High definition (HD) video format with 1080 horizontal lines using the interlaced scanning system.
24P (24 frames per second, progressively scanned video): Video capture and recording format that is commonly used for theatrical movie production because the frame rate (24 frames per second) matches the frame rate of cinema production equipment and film projectors.
3:2 Pulldown: Process for converting 24 frames per second material (e.g., cinema films) into 30 frames per second material (e.g., NTSC television). Process involves converting movie frames into an alternating pattern of 3 video fields and 2 video fields, hence the name.
4 CIF: Video image with an image area that is four times larger than CIF resolution, or 704 576 pixels.
5.1 Surround Sound: Audio signal format consisting of 5 channels of audio (Left, Center, Right, Left Surround, Right Surround) plus a sixth low-bandwidth, low-frequency effects channel.
720p (720 line progressive scanning): High definition (HD) video format with 720 horizontal lines using the progressive scanning system.

AAC (Advanced Audio Coding): High-performance audio encoding format first developed for MPEG-2 and further enhanced for MPEG-4. Produces high-quality sound at reduced bit rates, plus offers efficient support for 5.1 surround sound. Also handles audio content that has a high sampling rate (96 KHz).
AAF (Advanced Authoring Format): Industry standards that describe formats to be used for the exchange of video, audio, and related content between creators, as well as standards for the meta-data that describes the content for human and machine reading.

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Video Over IP: A Practical Guide to Technology and Applications