Judging AVI Field Order

[MI6]

Is any tool available for judging AVI field order.For example I use TMPGEnc 2.5 for encoding video and on it's wizard I can read field order but in some cases I have problem. I use Vegas 6 for editing video then frameservering with debug frameserver to TMPGEnc for encoding to MPEG.For instance I put DV AVI ( Even field A) on timeline, I start with PAL project 720x576 (Even field A) too, then frameserving to TMPGEnc but here, TMPGEnc judging expert says that field are Odd B, what is not corect.Where is the problem????
Regards.

[daamon]

Hi MI6,

As far as I know, there is no tool for identifying what the field order of an AVI is. DV AVI is, I believe, nearly always bottom field first. Have you tried that in your video editing project?

Have you tried encoding anyway? You may find that it turns out OK. If not, just reverse the order in the encoder.

[manono]

To determine the field order, the most guaranteed way is to use AviSynth:

AviSource("C:\Path\To\Video.avi")
AssumeTFF()
SeparateFields()

Open it in VDub(Mod). Advance a frame at a time in a place where there's movement. If the motion is steadily in one direction, it's top field first. If the motion is in a jerky backwards and forwards manner, it's bottom field first.

And as daamon says, DV AVIs are almost always bottom field first.