Problem opening a transport stream in Virtualdubmod using Avisynth

[fuxor123]

I'm currently trying to encode a transport stream but whenever i open it in Virtualdubmod the whole movie is covered in "blocks".
I use DVD2AVIT3 to create a dv2 file and demux the audio and then use the following script to load the movie into Virtualdubmod:

Loadplugin("...\mpeg2dec3.dll")
Loadplugin("...\decomb521.dll")
Loadplugin("...\Avisynth_2.5_Alpha\simpleresize.dll")
Loadplugin("...\undot.dll")
mpeg2source("...\asdf.d2v")
Telecide(order=1,guide=1,post=2,vthresh=30)
Decimate()
crop(8,132,-8,-140)
UnDot()
simpleresize(1280,544)

I tried several different settings in DVD2AVIT3 which led to nothing, reinstalled codecs, played around with VDM but nothing helped...
I also encoded the movie once to see if the prob would be gone then but the blocky thingies were still there...

Here some screenshots to show you what i mean. Those blocks appear throughout the whole movie btw.

http://img221.imageshack.us/img221/6227/asdf0917aj.th.jpg (http://img221.imageshack.us/my.php?image=asdf0917aj.jpg)
http://img221.imageshack.us/img221/9806/asdf1036gv.th.jpg (http://img221.imageshack.us/my.php?image=asdf1036gv.jpg)
http://img221.imageshack.us/img221/1378/asdf1383jc.th.jpg (http://img221.imageshack.us/my.php?image=asdf1383jc.jpg)

[Guest]

DVD2AVIT3 is rather old and possibly buggy. Try using DGIndex from the DGMPGDec package. If the blocks remain, your transport stream is probably corrupted. To see if that is the case, check the Info field in DGIndex's Information dialog to see if video errors are reported.

[Pookie]

In addition to Neuron2's recommendations, try running the Transport Stream file through MPEG2Repair .

[fuxor123]

It worked with DGIndex. Strangely DGIndex and DVD2AVIT3 gave me two different delays for the sound. DGIndex' was -181ms and DVD2AVIT3's something like -382ms. And the latter seemed to fit better...
Otherwise thanks for the tips...

[tomos]

i prefer dvd2avi since it gives a bigger window if you want to crop. + it doesnt make you enter PIDs etc.

although it does open things that dvd2avi doesnt without running through projectx :)