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394 Pinnacle Studio User Guide
contains three types of frames: I-Frames, P-Frames (pictures) and B-
Frames.
GOP size: The GOP size defines, how many I-Frames, B-Frames and P-
Frames are included in one GOP. For example, current GOP sizes are 9
or 12.
Hardware codec: Compression method that uses special hardware to
create and play back compressed digital video sequences. A hardware
codec may offer better encoding speed and image quality than a codec
implemented completely in software. See
Codec, Software codec
HD: High Definition video. Most HD formats in use have a resolution of
either 1920x1080 resolution or 1280x720 resolution. A substantial
difference exists between the 1080 and 720 standards: the larger
format uses 2.25 more pixels per frame. This difference substantially
increases requirements for processing 1080 content in terms of
encoding time, decoding speed, and storage. The 720 formats are all
progressive. The 1080 format has a mixture of progressive and
interlaced frame types. Computers and their displays are inherently
progressive, whereas television broadcasting has been based on
interlaced techniques and standards. For HD terminology, we indicate
progressive with the letter ‘p’ and interlaced with the letter ‘i’.
HDV: A format for the recording and playback of high-definition video
on a DV cassette tape. has been established as the ‘HDV’ format.
Instead of the ‘DV’ codec, HDV uses a flavor of MPEG-2. There are two
varieties of HDV: HDV1 and HDV2. HDV1 is 1280x720 resolution with
progressive frames (720p). The MPEG transport stream is 19.7 Mbps/
s. HDV2 is 1440x1080 resolution with interlaced frames (1080i). The
MPEG transport stream is 25 Mbps/s.
Hi8: Improved version of Video8 using S-Video recorded on metal
particle or metal evaporated tape. Because of higher luminance
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