how 2 detect the field order of an mpeg2

[Vdubby]

Dear all,
in a few cases I had to change the order per projectX. The DVD showed bad sequence.
I tried to test with TMPGEnc > advanced > deinterlace > even-odd field, but this does not seem an appropriate way to test mpeg2 sources.
Can you recommend something? Maybe an avs script?

tkx, Klaus

[neuron2]

Open the MPEG2 in DGIndex and hit F5. The field order is given in the Info dialog.

[Vdubby]

thanks Neuron2 - DGIndex helps perfect !

[PhillipWyllie]

If that doesn't work, use neuron2's DGIndex to index the MPeg-2 and open up in Avisynth using this script:

mpeg2source(".d2v")
assumetff()
seperatefields()

Go to a bit where there's motion, if the motion is jerky then you have bottom-field-first video. If not try assumebff() where it says assumetff(), if there's no jerkiness in motion after that you have progressive video(even if it happens to be interlaced). It's amazing how often I come across so-called professionally produced video that has the wrong field order flag, and even encoded with the wrong block-scan order!