Handling moire?

[Selur]

(looked at this years ago and there wasn't really a good solution for it back then)
Wondering how should one deinterlace/ivtc content like the attached file nowadays in Avisynth/Vapoursynth?

Cu Selur

[Sharc]

Try with something like

DGTelecide(mode=0,pthresh=0.0,dthresh=10.0,blend=false,show=false).DGDecimate(cycle=5,show=false)

Still some moire though. Tuning the thresholds may help ....

Edit:
I did also some tests with TFM().Tdecimate() for various settings (not exhaustive) but DGTelecide seems to perform better in this case (less frames with residual moire)

[jagabo]

TFM(pp=1) or TFM(pp=2) will work better but not as good as DGTelecide() above. Note that any real interlaced frames will not be deinterlaced by the former, and will be blend deinterlaced by the latter.

A "manual" IVTC works best of all (sample attached):

Mpeg2Source("Moire Test.d2v", CPU2="ooooxx", Info=3) 
SeparateFields().SelectEvery(10, 0,1, 3,4, 6,7, 8,9).Weave()
Crop(8,0,-8,-0)

But you'll have to adjust for any breaks in the pattern.

[Selur]

Nice! Thanks! Probably will go with DGTelecide then for most cases, since having to adjust the patterns manually often is not worth the effort.

[jagabo]

Since these are from a DVD you might get lucky and find that there are no (or very few) breaks in the telecine pattern.