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?

  • The error message would indicate your codec doesn't have the correct functionality. Maybe it is faulty. You could try reinstalling.
    – Dr Mayhem
    Aug 21, 2018 at 17:28
  • @DrMayhem I must have come pre-installed, since I never installed it. And I can't find it anywhere.
    – user22994
    Aug 22, 2018 at 1:03

1 Answer 1


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.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.