Instruction Manual

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Video Playback, Import, and Export
Controlling Playback
To Export a Video
1. Make sure your audio tracks are completely mixed, and your video Start
time, Trim-In time, and Trim-Out time are set the way you want them.
2. Use the File-Export Video command.
The Export Video dialog appears.
3. In the File Name field, type a name for your new video.
4. In the Files of Type field, choose the kind of video file you want the
exported file to be.
5. Click the Encoding Options button to open a dialog of encoding options
for the kind of file you’re creating. Some codecs do not work: click the
Help button in the dialog for help choosing options.
Note: if you’re exporting an AVI file to either a 24-bit audio format or to
a multi-channel (surround sound) format, set the Audio Codec in the
AVI Encoding Options dialog to No Compression.
6. Click the Audio Mixdown Options button to open a dialog of audio
mixdown options. Click the Help button in the dialog for help choosing
options.
7. Click Save to export your video.
Optimizing Video Performance
Here are a few tips to optimize video performance:
• Viewing your video in on an external DV device will significantly
decrease the processor load on your computer if the video stream is a
DV AVI file. See Video Playback on a FireWire DV Device for more
information.
• If you intend to do a lot of seeking around or looping and editing while a
video file is loaded, make sure that your video file has sufficient
keyframes. Since each frame has to be computed from the last
keyframe encountered, if you have very few keyframes in the video,
performance may be slow. To change the number of keyframes, you
may recompress the file using the File-Export Video command and
specify more frequent keyframes. Choose a suitable video compressor
such as Cinepak and change the KeyFrame Rate parameter to a
number between 1-5. A value of 1 makes every frame a keyframe, and
higher numbers insert a keyframe after that many frames.
• Changing the video properties of an AVI file, such as Trim and Start
time, can make realtime performance slightly slower. You can make