On Windows 10 or 11, try running VirtualDub in for Windows 7 or XP. Codec Problems with trying to edit videos with VirtualDub
: Installing multiple codec packs can lead to registry conflicts that prevent VirtualDub from correctly identifying drivers. Troubleshooting Steps Install VFW-Compatible Codecs : Unable To Initialize The Output Video Codec Virtualdub
: If you are using a 64-bit version of VirtualDub, you must have the 64-bit version of the codec installed. A 32-bit codec will not be visible to a 64-bit instance of the software. On Windows 10 or 11, try running VirtualDub
The newer VirtualDub2 includes built-in support for more modern containers and codecs, which often bypasses the initialization issues found in older variants. : A 32-bit codec will not be visible to
If using specific codecs like PICVideo MJPEG, try unchecking as this can sometimes block initialization. Use VirtualDub2 :