Specified Avchd frame rates are

Frame Dimensions, Number of Lines, and Resolution

AVCHD supports three HD video resolutions:

å1920 x 1080: This format is sometimes called Full HD because it contains the full 1920 horizontal pixels of the 1080-line HD format.

å1440 x 1080: This is a horizontally subsampled image with 1080 lines.

å1280 x 720: This is a full-resolution 720p format.

SD NTSC- and PAL-compatible formats are also defined in the AVCHD specification:

å720 x 480 at 60i

å720 x 576 at 50i

Important: The SD AVCHD formats are not supported by Final Cut Pro.

Frame Rate

The specified AVCHD frame rates are:

åNTSC-compatible frame rate: 29.97 fps (1080i60, 720p60)

åPAL-compatible frame rate: 25 fps (1080i50, 720p50)

åFilm-compatible frame rate: 23.98 fps (1080p24, 720p24)

Scanning Method

AVCHD can record either interlaced or progressive scan images:

å1080 lines: Interlaced (1080i) or progressive (1080p)

å720 lines: Progressive

Color Recording Method

The AVCHD color sample ratio is 4:2:0, with 8 bits per sample.

Data Rate

The amount of storage space required by AVCHD footage depends on the quality setting chosen on the camcorder. Most camcorders support several quality levels, although these quality levels have different names and bit rates on different camcorders. When variable bit rate (VBR) encoding is used, complex and rapidly changing video requires more data, shortening recording time. Therefore, stated variable bit rates are an average.

Chapter 6 Working with AVCHD

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6 specifications

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