Simple enough. The tester will run a variety of things in media player to see if your install can do what it needs to do. Close the media player window when you've seen all you need to see in order to progress to the next stage of the test.

If you can see these two tests (and it's the correct Avisynth Version) then Avisynth has installed correctly. If not, you can check the troubleshooter below.

Mpeg-2 Tests

The Mpeg2 tests are designed to see if the installed versions of Avisynth, Avisynth Plugins and DGIndex can correctly index an mpeg2 vob file and play it back in Avisynth. The first thing this test will do is create a .d2v (DGIndex) project file that indexes a small vob that is supplied with the AMVapp.


This will probably happen faster than you can tell but you will see something like this flash up for a split-second:


Once the d2v file is created, avisynth will attempt to decode this in YUY2 colorspace...

The next two tests will look exactly the same as the YUY2 test except they will test decoding in YV12 and then RGB32 colorspaces. They should appear just like this YUY2 image except they will say "YV12 Test" and "RGB32 Test" respectively. If any of the outputs don't look the way they should then read the troubleshooting section below.

If, however, everything is working fine you can move on to learning about some of these programs.

Troubleshooting the Tests

The way the installer is written should mean that there should be no problem whatsoever in the tests, but it is possible that problems could occur. Read through the descriptions and see if there is anything that solves your particular problem. If not, please report the error in the Video Software Forum (a screenshot may be useful if it's a visible problem) and hopefully someone will be able to help you.

1) A different version of Avisynth is being reported than the one I tried to install! This should be particularly noticeable if the Version test reports 1.x or 2.0x version of Avisynth. You should look in both your Windows (or WINNT) "System" and "System 32" folders for avisynth.dll and delete them - you may even want to search your C directory for this file too. After you have cleaned this up, go to the AMVapp/Installed Files folder and re-run the Avisynth installer. Try the test again and see if the version has changed.

2) I get an Avisynth error saying "There is no such command: MPEG2Source" This means that there has been a problem during the avisynth filters installation. Go to the AMVapp/Installed Files directory and try installing the Avisynth filters again. Look in the installation folder to see if the filters are actually installing. The one you want installed is "DGDecode.dll"

3) I get an "Unrecognized Exception" error. Oh dear - I thought we'd seen the last of these. This error appears when either the avisynth or DGDecode.dll finds a problem with processing the source but it's a problem that hasn't had an error code written for it. This can mean anything and if it is happening on the AppTests then it's not good. Make sure the Version test is correct and the Avisynth Filters have been installed correctly. Also double-check to see if your Avisynth 'Plugins' directory - there should be a file called DGDecode.dll and NO files called mpeg2dec.dll or mpeg2dec3.dll.

4) I get a "Cannot playback file - format is not supported" error. This means that Avisynth has not been installed or has been installed incorrectly. Try installing again, see if the avisynth installer gives you any errors. You will probably need administrator access to install avisynth, so check that you do.