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mistermickster

12-05-2003 09:11 AM

Field order for interlaced source

Is there an easy way to determine the correct field order for an interlaced DVD source :?:

Dialhot

12-05-2003 09:13 AM

I fear not. May be I'm wrong.

kwag	12-05-2003 09:34 AM

Read here: http://www.inmatrix.com/articles/ivtc1.shtml
Where it says "Selecting the correct field order:"

-kwag

mistermickster

12-05-2003 09:42 AM

Quote:

Originally Posted by kwag

Read here: http://www.inmatrix.com/articles/ivtc1.shtml
Where it says "Selecting the correct field order:"

-kwag

Cheers kwag,

I knew you'd know :bowdown:

Boulder

12-05-2003 02:08 PM

You can determine the field order with a simple Avisynth script.

Code:

MPEG2Source("path\clip.d2v")

AssumeTFF()

SeparateFields()

Open the script in VirtualDub and find a spot in the clip where there's some motion. If the motion is smooth, the field order is top field first. If it's jerky, the field order is bottom field first. You can verify this by using AssumeBFF() instead of AssumeTFF().

IIRC, most DVD sources are top field first.

mistermickster

12-12-2003 10:01 AM

Is it recommended that choosing the correct field order for interlaced sources is better than deinterlacing ? :?

incredible

12-12-2003 11:49 AM

The one bases on the other!

Interlacing on an incorrect field order will result in a bad looking picture (as Boulder explained) cause when deinterlacing both fields become one frame ... an there do exist different ways and therefore diff. AVS filters.

DV standard is Bottomfield first for example.