Reference Guide

1574 Dialog box reference
AVI Encoder Options dialog
• Intel I.263
• Cinepak Codec by Radius
• Microsoft Video 1
• Microsoft RLE
• These codecs have been found not to work:
• H.261
• H.263
• Intel 4:2:0 Video V2.50
• MSScreen 9 encoder
• MSScreen encoder
• WMVideo Encoder DMO
• WM9Video Encoder DMO
Audio Codec
The following audio compression codecs have been found to be compatible (you may see different
codecs installed on your system):
• CCITT - A Law
• CCITT - U Law
• DSP Group TrueSpeech
• PCM (this is the standard uncompressed format for wav files)
• GSM 6.10
• IMA ADPCM
Keyframe Rate
This field is greyed-out if you choose the Default Codec in the Video field.
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 to No Compression.
Note: 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 File > Export > Video and specify more frequent keyframes. Choose a suitable video
compressor such as “Indeo Video 5.04" 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.