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Audio Processing
I have mentioned at the start of the tutorial that VirtualDub has some problems with audio tracks encoded with variable bitrate.
If a message box appears complaining about the sound having variable bitrate, we have to make VirtualDub happy and process the audio track a bit.
We need to decompress the whole audio track on the drive and replace the original, variable bitrate track, with the decompressed track.
From the "Audio" menu, select "Full Processing Mode" to let VirtualDub know we want to process the audio track and not just copy it on the drive, as stored in the movie.
After the option is selected, select the "Compression" option from the same "Audio" menu, and make sure there is no audio codec selected.
Start saving the audio track in decompressed form by clicking the "Save WAV.." option from the "File" menu.
As soon as the process is completed, go to the "Audio" music and select "WAV audio..".
The last step is to go again to the "Audio" menu and select "Direct stream copy" because there is no processing required for the already decompressed audio track on your drive.
Next > The Final Steps
Contents
1. Introduction
2. The Tools
3. Installation & Configuration
4. Video Processing
5. Adding Subtitles
6. Audio Processing
7. The Final Steps
8. Encoding To MPEG
9. Conclusion
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