Chapter 7 Working with AVC-Intra 117
AVC-Intra is an HD video format that uses Advanced Video Coding (AVC) compression,
just as with AVCHD. However, AVC-Intra uses only intraframe compression (I-frame-only
compression) as opposed to the interframe (long-GOP) compression used by AVCHD.
AVC-Intra can also record higher-quality color using 10-bit, 4:2:2 color sampling.
Storage Medium
AVC-Intra is recorded on Panasonic P2 cards. As with other formats recorded on
Panasonic P2 cards, AVC-Intra is stored in MXF container files. For more information, see
“Panasonic P2 Card Format Specifications” on page 107.
Video Standard
The AVC-Intra specification supports 1080i, 1080p, and 720p HD recording standards.
Aspect Ratio
AVC-Intra records HD video with an aspect ratio of 16:9.
Frame Dimensions, Number of Lines, and Resolution
AVC-Intra supports the following HD resolutions:
Â1920 x 1080: This format is sometimes called Full HD because it contains the full
1920 horizontal pixels of the 1080-line HD format.
Â1440 x 1080: This is a horizontally subsampled image with 1080 lines.
Â1280 x 720: This is a full-resolution 720p format.
Â960 x 720: This is a horizontally subsampled image with 720 lines.
Frame Rate
The specified AVC-Intra frame rates are:
ÂNTSC-compatible frame rate: 29.97 fps (1080i60, 1080p30, 720p60, 720p30)
ÂPAL-compatible frame rate: 25 fps (1080i50, 1080p25, 720p50, 720p25)
ÂFilm-compatible frame rate: 23.98 fps (1080p24, 720p24)
Scanning Method
AVC-Intra can record either interlaced or progressive scan images:
Â1080 lines: Interlaced (1080i) or progressive (1080p)
Â720 lines: Progressive