I just started encountering this problem recently with my Lagarith-encoded AVI clips when I work in MEP-10US. At first, I thought that it was due to some sort of incompatability with my new Athlon X2 (4200X2) , but now I see it happening on my work machine too (a P4 3.2ghz). Here are the images:
Good frame

then comes the bad frame

Okay, here's the details: I start out with DVD footage that I index using DGIndex and then take that into VirtualDubMod/AVISynth to save my clips as Lagarith-encoded AVI files. I then import them into MEP to work with and make my videos - and this is where the probem starts.
I can see it when I preview it in the editor preview window, but if I look at the source AVI file, it isn't there. The errors always appear in the same place so I thought that it was in the original file.
If I export my final video from MEP as a Lagarith encoded AVI or as an MPEG2 file, it shows up in the final. If I export it as a Huffyuv encoded AVI, it doesn't appear. Mind you, this doesn't happen with all the AVI files, either - only some of them display this artifacting.
I could just work in Huffyuv AVI files, but they take up so much more room than the Lagarith files (both are lossless codecs). I at first thought that it was the Lagarith codec, but now I think it might be an incompatability with MEP as if I use another MPEG encoder and directly encode the orignial source Lagarith AVI, the error doesn't appear.
So, anyone have any ideas?
