4.5

71Compressor User Guide
• Remove all metadata and annotations: Passes no metadata to the source file.
• Include metadata from the source file that cannot be displayed as a job annotation:
Available when Use Job Annotations is selected. Includes the metadata from the Job
Annotations listed in the Job Inspector and passes the existing metadata from the
source file to the transcode.
Video properties
• Enable video pass-through: Select this checkbox to copy the source video unmodified
to the destination file. When this checkbox is selected, all the other settings in the
Video Properties area are disabled.
• Frame size: Use this pop-up menu to set the frame size (resolution) for the output
file. See Intro to modifying frame size in Compressor. There are four categories to
choose from:
• Automatic: Adjusts the output based on the size of the input, and can be constrained
“up to” a maximum resolution.
• Percentage: Adjusts the output based on a percentage of the input’s size.
• Manual: Forces the output to a specific resolution.
• Constrained: Constrains the output to a specific aspect ratio.
• Pixel aspect ratio: Use this pop-up menu to set the pixel aspect ratio (the ratio between
the encoded width and the display width).
Note: This property can be set when “Frame size” is set to a manual or constrained
setting.
• Frame rate: Use this pop-up menu to set the playback rate (the number of images
displayed per second) for the output file. See Retiming options in Compressor.
• Field order: Use this pop-up menu to set the output scanning method (either the field
dominance or a conversion to progressive scanning). There are four options:
• Automatic: Selects the most appropriate field order, based on the field order of the
source and the capabilities of the selected codec.
• Progressive: The video is displayed in complete frames with all lines sampled at the
same instant in time.
• Top First: The video is interlaced and displayed as two separate interleaved fields.
The field containing the top line (even lines) is sampled at an earlier instant in time
than the field containing the bottom line (odd lines). This field order is commonly
used for high-definition video and standard-definition PAL video.
• Bottom First: The video is interlaced and displayed as two separate interleaved
fields. The field containing the bottom line (odd lines) is sampled at an earlier
instant in time than the field containing the top line (even lines). This field order is
commonly used for standard-definition NTSC video.
Note: If you use a QuickTime movie preset based on the H.264 format (such as any of
the presets in the Video Sharing Services settings), the “Field order” pop-up menu is
disabled and automatically set to Progressive (complete frames are scanned). To set
the field order to an interlaced option, disable Multi-pass in the Inspector.