Adobe 65021048 User Manual page 388

ADOBE PREMIERE PRO CS3 382
User Guide
HD video formats are designated by their vertical resolution, scan mode, and frame or field rate (depending on the
scan mode). For example, 1080i60 denotes interlaced scanning of 60 interlaced 1920 x 1080 fields per second,
whereas 720p30 denotes progressive scanning of 30 noninterlaced 1280 x 720 frames per second. In both cases, the
frame rate is approximately 30 frames per second. For more information on high-definition video, see
www.adobe.com/go/learn_dv_primer_highdef.
Programs in Adobe Creative Suite 3 Production Premium (Adobe Premiere Pro, Adobe After Effects, Adobe
Soundbooth, and Adobe Encore) includes presets that are designed for working with various HD formats. Some of
the most common HD video formats you may encounter include the following:
Panasonic's high-definition variant of its DVCPRO format, which also includes DVCPRO25 and
DVCPRO HD
DVCPRO50. Whereas DVCPRO25 and DVCPRO50 support data rates of 25Mbits/s (megabits per second) and
50Mbit/s, respectively, DVCPRO HD supports a data rate of 100Mbit/s, from which it gets its other name,
DVCPRO100.
Sony's high-definition version of its Digital Betacam format. A variant called HDCAM SR uses a tape with
HDCAM
a higher particle density to record video with greater color sampling and at higher bit rates. However, HDCAM SR
is supported by decks only, and not camcorders.
Developed jointly by several companies, HDV employs a form of MPEG-2 compression to enable high-
HDV
definition video to be encoded onto standard miniDV cassette media.
Also known as MPEG-4 part 10 and AVC (Advanced Video Coding), H.264 can deliver video over a range of
H.264
bitrates more efficiently than previous standards. For example, H.264 can deliver the same quality as MPEG-2 at
half the data rate. H.264 is built into the Apple QuickTime 7 multimedia architecture, and it's supported by both
HD-DVD and Blu-ray Disc, two newer DVD formats.
High-definition video in an uncompressed format. Without compression to reduce the video's
Uncompressed HD
data rate, uncompressed video requires relatively fast computer processors, hard disks, and a specialized capture
device.
Microsoft's high-definition delivery format is among numerous formats included in the Windows
WM9 HDTV
Media 9 (WM9) framework. By employing an aggressive compression scheme, WM9 HDTV permits high-
definition video encoding and playback at relatively low data rates.
See also
Understanding and using high-definition video
Options for exporting HD and HDV sequences
If you have a supported high-definition capture card installed, you can export high-definition sequences to a high-
definition file format on hard disk or to tape in a high-definition device. You can also export MPEG-2 Blu-ray files,
a high-definition format for authoring to Blu-ray discs; or high-definition varieties of H.264 or Windows Media
files. These can be used for high-definition playback from hard disks or computer optical drives.
Adobe Premiere Pro can export HDV sequences in HDV format only onto tape in a connected HDV device
(Windows only). However, you can export HDV sequences to files on the hard disk in non-HDV standard- or high-
definition formats.
DVCPRO HD sequences can be exported to DVCPRO HD format—either on a hard disk or on a P2 card.
See also
"Export to Panasonic P2 format" on page 387
April 1, 2008