Use Marks

When you select this option, the system uses current IN and OUT points in the selected clip or sequence to determine starting and ending frames for the export. To export the entire clip or sequence, deselect this option.

Use Enabled Tracks

When you select this option, the system exports only the currently enabled tracks for a selected sequence or clip. To export all tracks in the sequence, deselect this option.

Same as Source

When you select this option, the system copies the media files directly with no resolution change. This method is fast and creates output that uses the same quality as your source files. Selecting Same as Source is the best method to use if you plan to process the video on another system, using a third-party application like After Effects or media cleaner.

Use Avid DV Codec

Deselect this option when you are working in a cooperative environment where one or more non-Avid systems also have access to the media. This option is selected by default.

Custom

When you select this option, the system decompresses the files, processes them, and compresses the files at the requested resolution. This method is slower and often loses quality. You should only use the Custom option if you have to directly export a clip or sequence in a particular file format.

Format Options

Click the Format Options button to open the Movie Settings dialog box. For more information, see Selecting QuickTime Codecs.

Video and Audio

Select this option if you want to export both the audio and video.

Video Only

Select this option if you want to export only the video. For example, use this option if you want to add effects in a third-party application or to use only the video in a multimedia project.

Audio Only

Select this option to export only the audio. For example, use this option if you want to use or enhance audio in a third-party application or you want to use the audio in a multimedia project.

Video Format

Width x Height

Select this option to set the width of the clip.

Size to Fit: This option sizes to fit the specified width and height. You can type in values or select from the predefined values in the Fast menu.

The values in the Fast menu suggest a typical use for each size. For example, 320 x 240 (Internet video, large).

Crop/Pad: This option instructs the system not to scale or resize the frames. If necessary, it adds black lines to the top and bottom of the frame to achieve the correct size.

Color Levels

Select this option to set the color to RGB or ITU-R 601.

File Field Order

These options allow you to select the field that is the upper field during export. For 24p or 25p projects, these options do not appear; all fields are automatically exported as progressive (still) frames.

Odd (Upper Field First): Select this option if you are in a PAL project. In forming the export frame, Fieldá1 becomes the upper field, that is, Fieldá1's lines become the odd-numbered lines in the frame (counted starting from 1). Fieldá2's lines become the even-numbered lines.

Even (Lower Field First): Select this option if you are in an NTSC project. In forming the export frame, Fieldá1 becomes the lower field, that is, Fieldá1's lines become the even-numbered lines in the frame. Fieldá2's lines become the odd-numbered lines.

Single Field: Select this option if you want the output file to consist of only Fieldá1. In this case, the single field of 243 lines for NTSC (288 lines for PAL) is resized to fit the frame as specified in the width and height selection.

Create Preview

Select this option if you want to create a preview of the QuickTime movie.

Pixel Aspect Ratio

The pixel aspect ratio allows you to apply a scaling to the video: square, 4:3 non-square, or 16:9 non-square. The pixel aspect ratio allows you to control the display format without modifying the source file.

This feature creates metadata — additional data that is stored with the QuickTime movie. Some applications, such as the QuickTime Player and Avid ePublisher, can interpret this metadata and scale the image at display time.

Pixel aspect ratio is useful for the Same as Source option because that option also preserves the original format.