Apple Motion 3 - Manual (Page 1208)

1208 Appendix B Video and File Formats
Frame rates intended for broadcast video use can be interlaced, similar to standard
definition video on a television, or progressive like a computer display.
There are two options available for shooting high definition video:
 Sony’s HDCAM format supports 29.97i and 60i. Sony also has a 24p format.
 Panasonic’s high definition format, DVCPRO HD. Don’t confuse this format with
DVCPRO 25 and DVCPRO 50, which are both standard definition formats. Panasonic
also has a 24p format that offers variable speed using a variable frame rate
technology.
Both of these acquisition formats have color sampling of 8 bits per channel. High
definition tape decks also exist with color sampling of 16 bits per channel, for film
scanning, mastering, and archival purposes.
Frame rate Video format
23.98 A progressive frame rate intended for HD video transfer to film.
23.98 is rounded up from the actual frame rate of 23.976. This frame
rate is useful in post-production since it can be converted easily by
hardware to the interlaced 59.94 frame rate for video viewing
purposes.
24 A progressive frame rate intended for HD video transfer to film
25 Matches the frame rate of PAL video, used for broadcast.
29.97 Matches the frame rate of NTSC video, used for broadcast. Some
manufacturers that refer to a frame rate of 30 fps are actually
referring to 29.97 fps.
50 Doubles the frame rate of PAL, a high-quality frame rate used for
broadcast.
59.94 Doubles the frame rate of 29.97 video. It’s easier for broadcast
equipment to down-convert from 59.94 to 29.97 for purposes of
standard definition broadcasting.
60 Doubles the 30 fps (actually 29.97) frame rate corresponding to
NTSC video; a higher quality frame rate used for high definition
broadcast.
Digital format Maker
Color
sampling Compression
ratio Compression
type Recorded bit
rate
HDCAM Sony 3:1:1 7.1:1 DCT 17.5 MB/sec.
DVCPRO HD Panasonic 4:2:2 1.7:1 DCT 12.5 MB/sec.