AviSynth can't open my AVI file: "AVISource: Couldn't locate a decompressor for fourcc dvds" I simply want to open an AVI file with AviSynth and feed it into VirtualDub. However, when I open my .avs script (consisting of just one AviSource() call), I get the following error:

Avisynth open failure:
AVISource: Couldn't locate a decompressor for fourcc dvds
(H:\Videos\QTGMC\test.avs, line 1)


The required dvsd codec seems to be installed, according to software called GSpot (which identifies a video file's required codec's). Does anyone know why I can't open this file and how to fix it?
In case anyone has the same issue in the future, I solved it by installing Cedocida codec: http://www.cithraidt.de/cedocida/index.html#download.

Using DirectShowSource() instead of AviSource() also works.