Extract Sound from Video
You??™d think that sound and video are easily separable, especially given the
fact that they??™re shown as separate entities in the timeline view in Windows
Movie Maker. No such luck, but it is possible with the right software.
The Windows Media Stream Editor, a component of the free Windows Media
Encoder (available from http://www.microsoft.com/windows/windowsmedia/
forpros/encoder/default.mspx), can extract the audio from a .wmv video file and
save it into a standalone Windows Media Audio (.wma) file:
1. First, open the Windows Media Stream Editor and click Add Source.
Locate a .wmv or .asf file, and click Open.
2. Expand the branches by highlighting the file in the list and pressing the
asterisk (*) key, place a checkmark next to the Audio entry, and then
click Add.
3. Then, click Create File, specify an output filename, and click Save.
4. When you??™re ready, click Start to begin the extraction.
When the process is complete, you??™ll have a standard .wma file; see the next
section for ways to convert it to MP3 or any other format.
176 | Chapter 4: Working with Media
To yank out the audio track from non-Microsoft video formats, you??™ll need
a different program. A full-blown video editing application like Adobe Premiere
(http://www.adobe.com) can do this handily, as can Blaze Media Pro
(http://www.blazemp.com), but if you want to do it for free, try the AoA
Audio Extractor (http://www.aoamedia.com/audioextractor.
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