How to correct mismatched Fields in progressive video ?

[Fudoh]

Hi fellows,

I've got a weird DVD here. It's source is progressive PAL (filmbased, incl. 4% speedup) but the fields in the stream on the DVD are completey mismatched.

While the fields should look like this:

A1 B1 C1 D1 E1 F1 G1 H1
A2 B2 C2 D2 E2 F2 G2 H2

The actual videostream looks like this:

A1 B1 C1 D1 E1 F1 G1 H1
B2 C2 D2 E2 F2 G2 H2 G2

Any ideas how I can correct this ??

Thanks,
Tobias

[actionman133]

Try this:

AssumeBFF ().DoubleWeave ().SelectOdd ()

If that looks the same, use TFF.

[scharfis_brain]

assum?ff() is NOT needed.
MPEG2Source() sets the fieldorder depending how it is flagged within the D2V

[Nikos]

But if the flag is wrong then we must use assumeTFF()
or assumeBFF().

[Hurricane Neddy]

Isn't that just field-shifted material? If so all you need is a frame matcher like tfm or telecide.