5.5

Table Of Contents
31 Resolutions and Storage Requirements
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You can use lower resolutions when your work does not require very high image quality (for
example, in offline work, or in CD-ROM or Web authoring projects), and higher resolutions
when you need excellent image quality. You can also mix different resolutions within the
same project as long as those resolutions are compatible with one another. (see “Mixing
Resolutions” on page 1356).
Avid editing applications also support the capture and storage of video that is not processed
by a data compression scheme:
Uncompressed video (1:1) is available as standard definition (conforming to the ITU-R
601 standard) or as high definition (conforming to the ITU-R 292M standard). The
image quality of uncompressed video is very high, but uncompressed files require very
large amounts of drive space. For more information, see “Support for Uncompressed
HD Media” on page 1355.
DV (digital video) is a compressed media format. SMPTE standards specify how to take
601 video and convert it to a compressed format. When capturing through a 1394
connection, your Avid editing application records DV media in its native format, and
does not compress it further.
Monitor Display Resolutions
The display resolution for the monitors in your Avid editing application varies depending on
the video format, as described in the following table.
Video Format
Active video displayed (in
pixels)
Stored video not
displayed
NTSC JFIF (ITU-R 601)
NTSC 1:1 (Uncompressed)
NTSC MPEG IMX
720 x 486 non-square 10 lines of blanking or varietal
interval timecode (VITC) per
frame (5 lines per field)
NTSC DV 25 and DV 50 720 x 480 non-square None
PAL JFIF (ITU-R 601)
PAL 1:1 (Uncompressed)
PAL MPEG IMX
720 x 576 non-square 16 lines of blanking or VITC per
frame (8 lines per field)
n
For more information on blanking or VITC, see “Vertical Blanking Information” on
page 1037.
PAL DV 25 and DV 50 720 x 576 non-square None
HD 720 1280 x 720 square None
HD 1080 1920 x 1080 square None