Step 1: Using FLV Extract
This step will use FLV Extract to separate out (demultiplex) the video and audio components in the FLV file.
.NET Framework 2.0:
The first thing you need to do before you can run FLV Extract is to download and install Microsoft's .NET Framework version 2.0
. It's a fairly large file and installation could take more than half an hour. Once you have it fully installed, you can now go on and download FLV Extract
Start FLV Extract.
Drag your FLV file into FLV Extract where indicated, and it will extract out the video as an AVI file and the audio is saved to a MP3 file. When the processing is completed, a confirmation dialog will pop up detailing the frame rate of the extracted video.
In the same directory as your original FLV file, there should now now an AVI file and an MP3 file (of the same filename as the original).
You can now close FLV Extract.