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VIDEO SAVE OPTIONS: COMPRESSION TAB
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1. Compression specifies the compression scheme or codec to save the file with.
Some compression schemes enable the Configure button which allows you to
further refine your compression options.
2. Quality controls the quality of the resulting file by varying the amount of com-
pression used. The better the quality (toward 100%) the less the compression.
The trade-off is the resulting file size (better quality equals larger files).
3. Keyframe for every specifies which frames in a video sequence will be
keyframes. More frequent keyframes result in better quality but increase file size.
As a rule of thumb, keep the number in this box low if the file contains rapidly
changing scenes and higher for files that have long stable scenes. (If you have
selected other keyframe options in the Video Editor tab, these are added by the
compression scheme to the keyframes specified here.)
4. Data type determines the number of colors to save the video with. In general, the
lower the number of bits used the smaller the resulting file size. 8-bit data types
contain 256 colors and are useful for single color animations and for when the
video is intended to be played back on a 256 color display mode. 16-bit (over
64,000 colors) and 24-bit (over 16 million colors) are best for video with a variety
of natural colors. (Which options are available is determined by the compression
scheme selected in the Compression list.)
5. Use common palette selects how the colors in an Indexed-Color (8-bit) video's
palette are created.
6. Audio specifies the compression and attributes for the audio track of a video. In
the Audio Format dialog box that opens you can select from the Name list the
scheme to save the audio with, such as CD Quality, Radio Quality or Telephone
Quality. When you select a scheme, its attributes are displayed in the Attributes
list. (You can also select a different combination of audio attributes directly from
this list.)
MEDIASTUDIO PRO USER GUIDE
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