User Guide

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Adobe Premiere Pro Help Capturing and Importing Source Clips
Using Help | Contents | Index Back 102
Using square-pixel footage for output to DV
You can use square-pixel footage in a DV project and generate output that does not
appear distorted. Adobe Premiere Pro either upsamples (increases) the resolution or
downsamples (decreases) the resolution of a file that does not match the project frame
size. Because downsampling results in a higher-quality image, it is best to create files that
are larger than the project’s frame size so that Adobe Premiere Pro does not have to
upsample and enlarge the file.
To use square-pixel files in a D1 or DV project:
1 Prepare footage using one of the methods following this procedure.
2 Capture or import the file into Adobe Premiere Pro.
Prepare square-pixel files for us in a D1 or DV project using one of the following methods.
• If your final output is DV (NTSC), create and save it at a 720 x 540 frame size to prevent
upsampling, or 640 x 480 to prevent field distortion on a field-rendered file (such as a
3D animation).
• If your final output is DV (PAL), create and save it at a 768 x 576 frame size to prevent
upsampling and field distortion on a field-rendered file (such as a 3D animation).
• If your final output is D1 (NTSC), create and save it at a 720 x 540 frame size.
• If your square-pixel file was created and saved at the frame size used by your project
(such as 720 x 480), but not at the pixel aspect ratio of the project, you’ll want to
redesign your image using a different frame size (such as 720 x 540). This is necessary
when the application you use to prepare the file doesn’t support nonsquare pixels.
File-size limitations
The Adobe Premiere Pro Timeline window can contain up to 24 hours of video; however,
the actual file-size limitation is not determined by Adobe Premiere Pro but rather by your
capture card, operating system, and hard disk. Check your capture card and hard disk
documentation for information on support of large files.
Hard disk formatting greatly affects the ability to handle large source clips. Files on a hard
disk formatted using FAT32 are limited to 4 GB each, or about 18 minutes of DV footage.
Files on a hard disk formatted as NTFS are not limited by the file system, although files will
still be subject to limitations that may be imposed by other components of your video-
editing system.