-
Working on a movie: Fields Dominance big problem!
I’m working on digital effects in movie shot in HD 25p. I work in motion, but I start from a Final Cut sequence with the clips I have to edit. The sequence and clips Field Dominance is set to Upper (odd). Even if the images are progressive (of course) the edges with these settings are sharp and the image in perfect (setting None in Fields Dominance produces a jagged pixelated image, like the edges of a deinterlaced clip). That wouldn’t be a problem for me, when I send a clip to Motion the Field Rendering is active, and the image is still perfect.
NOW THE BIG PROBLEM: if I, for exemple, put moving elements in the clip, horrible interlacing effects appear (only on the moving elements) while the images keeps being sharp and clean 🙁
When I go back to Final Cut the embedded motion clip is visibly a “deinterlaced” one (the edges are not sharp), but the source material is progressive!!
Please help me, I have to keep working but I can’t do it if the exported clips from motion with my edits are low quality (there’s a visibly lower vertical resolution…), in a Cinema it would be horrible O.O
Thanks a lot!
PS: the clips compression is Uncompressed 10-bit 4:2:2, resolution 1920×1080
Fabrizio Rinaldi
http://www.linuz90.com -
6 Replies
-
Hi Fabrizio,
Is the rendering in Motion is Interlaced, the clip will look wrong; the picture will keep with a p25 cadence and look, but the moving elements will be rendered at i50. Will look strange even if there are no interlacing artifacts. The video will look unnaturally choppy in contract with the graphics.
If you intend to de-interlace that to go back to Progressive, everything will get very degraded.
What you haven’t said is where are you monitoring all this.
What you should do is to try to find out why you can not edit full Progressive.
Best,
Raf Lover -
I’m monitoring this on a MacBook Pro, anyway I think I’m going to render multiple clips with multiple setting and wait for the editor to say me what’s wrong or what works…
I think that Final Cut Studio sometime (very often) interprets Full HD progressive footage as Interlaced footage. Recently I’ve bought a Full HD Camera and after a Log and Transfer I always have to set in the sequence setting the Field Dominance to Nome, because it’s always wrong…
Maybe I’m doing something wrong, I don’t know…
Anyway I think that while I’m working with progressive footage, words like “interlacing” should’n even exist.
I hope I’ll find the way 🙂
Thanks anyway!Fabrizio Rinaldi
http://www.linuz90.com -
Hi Fabrizio,
By default, don’t trust FC; check always field order and pixels aspect.
Make sure the footage shows in the Browser as NONE.
Any way the Progressive footage should work OK in any sequence, whatever the field order.
But avoid interlaced graphics over progressive footage and the other way round.
Rafael -
Ok thanks a lot I’ll remember that!
BTW I think that Apple should fix this..
Just one last question, is there a way to quickly (maybe with a keyboard shortcut) to delete all render cache of the current open sequence? Because sometimes I change some settings and frames don’t change unless i reopen the clips or sometimes re-render it… It’s a bit annoying.. 🙂
Thank you very much! 🙂Fabrizio Rinaldi
http://www.linuz90.com -
Fabrizio,
Is not a problem of FC, but the codecs.
FC have no problems with Prores or MPG-2.
With other codecs only can guess.To clean the renders, you have the Render manager in Tools.
Rafael -
Ok ok thanks for the clarification and everything!
Greetings,
FabFabrizio Rinaldi
http://www.linuz90.com
Reply to this Discussion! Login or Sign Up