Fields handling

[Rafael Amador]

Hi DopeElf,
BM handel properly the field domminance. However, FC try to do the same and when you lie Lower-first footage in a Upper-first time-line, or viceversa, FC sets the “Shift-fields” effect to the footage. Just uncheck the effect and the rendered film will look perfect.
salud,
rafael

[Luke Maslen]

Hi,

Yes, DeckLink will handle the field issues with your PAL DV video and we have a support note that covers this named “DV clips in PAL format look weird“. I’ve copied the text below as it covers this issue and more.

Why does DV material look bad when exported to uncompressed?

The reason DV files look weird, is because the field order is wrong. The DV spec was designed with the wrong field order for PAL. On every other system, PAL is rendered upper field first, and this is how all video media and hardware works. However with DV, it

[Pasi Koivisto]

That’s what I usually do. Now, what I would like is to adjust the field dominance setting on the clip and have my card change the dominance on the fly, in realtime and mixed in a timeline.

[Rafael Amador]

Hi Luke,
I do as you say. I oppen a BM10B Uncompress, Upper-First sequence in FC. I drag a DV clip. Automaticly FC sets the”Shift-fields” effect. If I just render like that, the film is rendered in the wrong order and watch it is a headache.
if I simply uncheck the filter, the result is optimum. This is contradictory with what the article about DV says. I have a JVC monnitor, and work with FC 5.0.4.
Thanks,
rafael

[Kristian Lam]

Hi,

Yes, Final Cut Pro automatically applies a shift field filter if it detects a different in field dominance between the clip and the configured timeline. The video then gets passed on to out output component. Unfortunately, this doesn’t quite happen correctly in Final Cut Pro 5.1.1 but should be addressed in the upcoming 5.1.2 release.

regards

Kristian Lam
Blackmagic Design