AVI to VCD / DVD will not encode the video from my mjpeg capture card?
Some mjpeg capture cards use a hardware based codec which is not compatible with the DirectShow component of DirectX. Some software mjpeg codecs are also not compatible with DirectX. You should first make sure you have the latest version of the codec. If that still does not work, then the only other thing I can suggest is to contact the manufacturer and request a DirectShow compatible version of your codec.