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Photos edges not smooth when exporting video

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Paolo Drusi
Photos edges not smooth when exporting video
on Apr 5, 2014 at 8:05:07 pm

Hi,

I'm producing a video slideshow with some photos, music and some video footages. I'm working in FinalCutPro 7.0.3 and the sequence settings are

25fps
1280x720
AppleProRes 422 HQ

The photos are around 2596 × 1886 300dpi. I've exported them from photoshop in TIFF square pixel and they look great when I import them into FC. Some photos are slightly rotated and when exporting the video in QT the overall quality is very good, but the edges of the photos are not linear but rather look like stairs.

I've tried different degrees of export settings, included AppleProRes 422 HQ, 25fps, 1280x720 but still no luck with the edges.

Can somebody give me an advise?

Thank you
Paolo


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Mark Suszko
Re: Photos edges not smooth when exporting video
on Apr 6, 2014 at 8:22:59 pm

Aliasing is what that artifact is called. I'm guessing your video is interlaced and not progressive?


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Paolo Drusi
Re: Photos edges not smooth when exporting video
on Apr 6, 2014 at 10:52:40 pm

I think so, not sure where to check this.


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Mark Suszko
Re: Photos edges not smooth when exporting video
on Apr 6, 2014 at 11:11:02 pm

Right-click on a clip in your timeline, find the "reveal properties" there. Report what it says. Next, click on your sequence icon, then go to "sequence" up at the top of your screen, get the info on ALL the sequence settings. Post that info here. Pay particular note to the words: "field dominance", (if any).


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Paolo Drusi
Re: Photos edges not smooth when exporting video
on Apr 7, 2014 at 7:08:34 am

On sequence properties field dominance is NONE, and also field dominance NONE on sequence settings from top menu.
p


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Mark Suszko
Re: Photos edges not smooth when exporting video
on Apr 7, 2014 at 4:03:31 pm

So all your footage is already progressive, not interlaced. Hmmm. Is Final Cut scaling your still images on import, or leaving them at native resolution? Are you then re-scaling them to fit? This is a choice set in User Preferences>Auto-Conform Sequence, checkbox "Always scale clips to sequence size" should be unchecked.

Beyond that, I got nothin'.


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Paolo Drusi
Re: Photos edges not smooth when exporting video
on Apr 7, 2014 at 4:32:38 pm

I've unchecked that option but I'm still experiencing the problem. Any ideas?
Thank you
p


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Mark Suszko
Re: Photos edges not smooth when exporting video
on Apr 7, 2014 at 5:29:32 pm

Saying a Novena to Saint Clare?


Can you post a still grab here? Use the tools just above this comment box.


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Paolo Drusi
Re: Photos edges not smooth when exporting video
on Apr 7, 2014 at 5:49:00 pm
Last Edited By Paolo Drusi on Apr 7, 2014 at 5:50:22 pm

See attached, thank you.
P







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Mark Suszko
Re: Photos edges not smooth when exporting video
on Apr 7, 2014 at 7:28:31 pm

I meant stills of the video.


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Paolo Drusi
Re: Photos edges not smooth when exporting video
on Apr 7, 2014 at 8:40:36 pm



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Mark Suszko
Re: Photos edges not smooth when exporting video
on Apr 7, 2014 at 9:25:23 pm

Did you try slightly cropping these and adding some drop shadow?

I definitely see aliasing happening. What was the workflow, step-by-step, from original photos to final timeline?


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Paolo Drusi
Re: Photos edges not smooth when exporting video
on Apr 7, 2014 at 9:33:11 pm

The only way to smooth the edges is to to add some crop and fade the edge a little. I was wondering if there's a way to correct the workflow to eliminate the aliasing.

I've simply dragged the original photos into FC browser window. They look perfectly fine in the previewer.

p


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