Doom9's Forum - View Single Post - How to handle a fade applied to hard telecine?

Didée · 28th July 2012, 20:32

I don't see anything "blended" in this sample. The problem is that the fades were done after the telecine. I.e. those same-(24p)frame fields that are spread between two 30i frames have different brightness because of that, and don't fit together anymore.

Words too complicated. Diagram!

Code:

a b b c d     < fields
a b c d d     < fields

8 6 4 2 0     < brightness (due to fading)

Frame c cannot be IVTC'ed without artifacts, since the present fields of c have different brightness.

Also, an IVTC filter will have a hard time to do "correct" matching in the first place.

Not to speak of the multiple fieldorder transitions in the sample. "Broken", that is.

28th July 2012, 20:32	#16 \| Link
Didée Registered User Join Date: Apr 2002 Location: Germany Posts: 5,391	I don't see anything "blended" in this sample. The problem is that the fades were done after the telecine. I.e. those same-(24p)frame fields that are spread between two 30i frames have different brightness because of that, and don't fit together anymore. Words too complicated. Diagram! Code: a b b c d < fields a b c d d < fields 8 6 4 2 0 < brightness (due to fading) Frame c cannot be IVTC'ed without artifacts, since the present fields of c have different brightness. Also, an IVTC filter will have a hard time to do "correct" matching in the first place. Not to speak of the multiple fieldorder transitions in the sample. "Broken", that is. __________________ - We´re at the beginning of the end of mankind´s childhood - My little flickr gallery. (Yes indeed, I do have hobbies other than digital video!)