User Guide

FILE FORMATS AND ATTRIBUTES

Also in the Video Compression dialog, you can specify the Data Rate of the video,

which relates directly to the final size of the file. Different compressors do

different things with this value, since it’s only an expected value. In most cases

you should leave this unchecked. If you have very limited playback data rates,

such as with a single-spin CD-ROM, you might then want to set this value.

However, note that the Compression Quality control setting will also affect the

output size.

Use the Preview button to get an idea of the video’s output quality and

compression amount.

EDITING AUDIO IN AVI FILES

When doing any operations on the soundtrack of an AVI file, the video stream

is always left untouched. For example, doing a cut or paste on a sound file will

not change the duration of the video stream.

In Sound Forge XP, the video stream and audio stream will always start

together, and you will see the video frames only where audio exists.Therefore,

if you want to view the entire video stream, you should use Insert Silence to add

enough audio to run the entire length of the video.You can then later mix into

the file any needed sounds.

WORKING WITH INTERNET MEDIA FORMATS

Sound Forge supports two different formats for creating files that are

optimized for streamed playback over (usually) slow networks such as the

Internet. RealNetwork’s RealAudio and RealVideo (.RM,.RA), and Microsoft’s

NetShow Advanced Streaming Format (.ASF) files can be created in Sound

Forge. To play these files, you must have the appropriate player application

installed in your computer.

This section covers the following topics:

• Using Sound Forge XP to create RealMedia files

• Using Sound Forge XP to create ASF files.

NOTE