Press F5 for a preview, let it run for a while, then press "ESC". If "Framerate" is 29.970 (NTSC) and "Video Type" is FILM at a
percentage higher or equal to 95% check "ForceFilm" in "Field
Operation", otherwise make sure it is NOT checked.

FORCE FILM. Most advice says to Force Film when the percentage in DVD2AVI shows as greater than 95%. Have you ever done an encode using Force Film at 99% and still found interlaced frames when done? I have -- many times. Force Film is not guaranteed to work perfectly unless it shows as Film (=100% Film). There may be a few interlaced frames, or the video may play jerky at a few spots. These interlaced frames may be in the pre-movie stuff such as the studio logos, they may be at chapter breaks, or they may be at other places where edits were done after the telecine process. Most of the time Force Film will work fine at those high percentages, but not always. When in doubt, create the .d2v with No Field Operation (29.97fps), and then use:

Telecide(Guide=1,Post=False)
Decimate(Cycle=5)

Using Post=False will disable the deinterlacer and speed up the encoding considerably (and don't forget to load the Decomb Plugin into your .avs). But, to be on the safe side, you may wish to leave in the Deinterlacer. Another alternative would be to Force Film and then turn on FieldDeinterlace(Full=False) in the .avs. In any case, material showing lower than 95% Film (or higher than 5% NTSC) should be IVTC'd and not Force Filmed.

TO IVTC OR TO DEINTERLACE. As hakko504 and jggimi both said, just because DVD2AVI shows it to be Interlaced or as 100% NTSC doesn't mean it's pure interlaced material (refer to Point 3 of the Technical Guide to DVD2AVI). In fact, in most cases it can be IVTC'd. So, how can you tell which to use? Look at the frames. How can you do that? Make your .d2v with No Field Operation (29.97fps), open it in GKnot, and scroll to a place with continual movement over 10 frames or more. Then start advancing a frame at a time. If, in every 5 frames, you see 2 interlaced frames and 3 non-interlaced (progressive) frames, then it has been telecined and can be IVTC'd (Inverse Telecined). If you see that every frame is interlaced, then it was created at 29.97fps (actually 30fps). These can't be IVTC'd. If you try, you'll be dropping non-duplicate material, and it will play very jerky (most obvious during a scrolling or panning scene). They can only be deinterlaced. Another way to check the frames is to make your .avs at 29.97fps (before IVTC) and open it in VDub or Nandub and make the same examination of the frames. Or use hakko504's script above and open it in VDub. Using his script, you're hoping to see very few interlaced frames (which a deinterlacer can take care of), and one duplicate in every 5 frames. There are other combinations of video and progressive frames which may show up and these are covered briefly in the "PAL To NTSC" and ?Bad Telecines? paragraphs further down.

#
LPCM Coding
# Lossless/uncompressed PCM audio
# Sampling frequency: either 48 kHz or 96 kHz
# bits/sample: 16, 20, or 24 bits
# up to 8 PCM channels.

Due to the user rate bandwidth limitation of 6.144 mbit/sec for any LPCM audio stream, not all combinations of channel count, sample precision and sample rates are permitted. However, up to 8 separate streams are permitted, as long as the combined stream rate is less than or equal to 9.8 mbit/sec. DVD nomenclature states that a single LPCM stream consists of one to 8 channels.