Step 2: Configuring ffdshow
We must now configure ffdshow so that VirtualDubMod (and any AVI supporting software) will be able to open up the AVI file produced by FLV Extract (which uses the FLV1/FLV4 codec).
Download ffdshow and start the installation. Click "Next" until you get to the "Select Components" screen, and make sure you select the "VFW interface" option. Press "Next" to continue.
When you reach the "Select Additional Tasks" screen, it will now allow you to select which codecs ffdshow will decode for you (if you already have ffdshow installed, the current selected decoders will be shown). Although the settings here won't actually affect the VFW codec configuration needed for VirtualDubMod, it might be worth selecting the "FLV1", "VP5/VP6" settings for video and "MP3" for audio, which will then allow playback of the extracted AVI file in multimedia players like Media Player Classic or Windows Media Player. In any case, there will be a chance to change these settings after the installation.
Press "Next" and then "Install" to start the installation. Once it is done, the follow screen will appear. Select the options as shown below (run video and VFW decoder configuration) and press "Finish" to complete the install.
The "ffdshow video decoder configuration" and "ffdshow video encoder configuration" windows should now have opened up (check the titles of the windows to tell which is which). In the "ffdshow video decoder configuration" program, select "Codecs" on the left hand side, make sure the "libavcodec" option is selected for both "VP6F" and "FLV1" as shown below and then press "Apply" and then "OK" to close this window. This should now allow you to playback the extracted AVI file in most multimedia/Directshow players.
In the "ffdshow video encoder configuration" window, click on the "Decoder" tab and select "Codecs" on the left hand side.
Again, make sure the "libavcodec" option is selected for both "VP6F" and "FLV1", press "Apply" and then "OK" to close this window. This should now allow you open the extracted AVI file in VirtualDubMod.