Was going to use Avisynth to convert a homerecorded dvd to xvid. Using DGindex to index and demux, got an error about some field order changes with a prompt to "Fix now" or "Later" (my words). I clicked the former. There's a short notepad list of 4 changes. Do I need to worry about this when I continue in Avisynth? I would deinterlace it (if it's interlaced), etc.