How do i work out what method to use?

[Carpo]

To de-interlace a video, i have done a lot of reading on how to tell if it is interlaced or not, I'm not sure how to go from there.

In MeGUI it tells me i need

LoadPlugin("C:\Program Files (x86)\MeGUI\tools\avisynth_plugin\TIVTC.dll")
tfm(order=1).tdecimate(mode=1,hybrid=3)

Now I managed to work out from the guides/FAQS that i have been reading how to select which method i would need to use, I am unsure how to work out the options.

I assume (mainly because i looked at megui) that order=1 one is for TFF which this content is, order=0 would be for BFF, how do I work out the tdceimate part?

At the moment the content I am working with comes up as either - Partially Interlaced in MeGUI which it tells me I would need to use yadif - how do i work out if its partially or fully interlaced? or it shows as Hybrid film/interlaced. Mostly Interlaced.

All content so far is 25fps DVD MPEG2 - the bluray isn't an issue :)

[talen9]

Have you had a look at this? http://www.doom9.org/ivtc-tut.htm

BTW, 25FPS PAL DVDs mostly are progressive; if you deal with anime DVD sources, most of them are, alas, blended, and it's very difficult to obtain a satisfying conversion out of them :(

[Carpo]

Yes i have seen that page, I do have some other discs i could look at but if I remember they all looked interlaced too :(

Suppose I will just have to keep testing for now

[patrick_]

If it looks progressive, it probably is.
Else, try TFM() - if the result doesn't look proressive, it's true interlaced (50fps) and you'll need to use a deinterlacer.

BTW, 25FPS PAL DVDs mostly are progressive;(
Most documentaries are interlaced (50fps).