'field operation' in DVD2AVI

[kisav]

@neuron2:

Can you take a look at:

http://forum.doom9.org/showthread.php?s=&threadid=93057

I really need your expertise on this.

My question(s) is: "Why the video will play back in older ver of DVD2AVI with field operation set to swap - properly (None, film or raw will produce the same artifacts as described in the link). And, is there a difference between setting it DVD2AVI or in avs script by using SwapFields()?

(The problem is only seeing in this source)

Thank you.

[neuron2]

First, instead of SwapFields try this:

AssumeFieldBased.SwapFields

Second, try this instead of SwapFields:

AssumeFieldBased.SeparateFields().Trim(1,0).Weave()

If that does not work, then upload the unprocessed VOB fragment to my FTP server and notify me by PM what its file name is.

[kisav]

Originally posted by neuron2
First, instead of SwapFields try this:

AssumeFieldBased.SwapFields

Second, try this instead of SwapFields:

AssumeFieldBased.SeparateFields().Trim(1,0).Weave()

If that does not work, then upload the unprocessed VOB fragment to my FTP server and notify me by PM what its file name is.

neuron2,

I've sent you PM

Tia.

[neuron2]

You've got a typical PAL one-field phase shift on progressive frames.

I would use this (instead of SwapFields) because it can adapt to phase changes:

Telecide(order=1,post=0)

But you could also use this *if the phase is constant* throughout the movie (unlikely):

AssumeTFF.separatefields.trim(1,0).weave

Phase changes at edit cuts are very common, so it's a REALLY REALLY good idea to use Telecide in cases like this.

Now to answer the point about the older DVD2AVI versions. In them, "Swap Field Order" is a misnomer. In fact, it simply is equivalent to the second method above (operating in TFF or BFF as appropriate)! So again, it isn't the ideal solution because the phase can change at edit cuts.