Trying to solve interlace artifacts

chromeboy007

chromeboy007

Well-known member
Hello,

I have a project that I have to update once every year on FCP 5, otherwise I no longer use FCP (moved to PPro a few years ago). It is simply a slideshow of one real estate image after another, with some basic animation.

The problem I have every time I work on this is that for some images, I get this ugly teething interlace artifacts when I export the file. It is a lot more noticeable on images that were a bit small and had to be up sized to fit standard definition. In the past I have always had to use "De-interlace - blur" in Compressor to reduce the ugliness of these images, but at the expense of reducing the quality of all other images and supers that are otherwise quite nice.

Other De-interlace options such as Odd or Even simply make everything worse. The Field Dominance of my timeline is Progressive, but I have tried changing it to Upper or Lower, etc. None of these things seem to matter.

At this time I'm going to try Blur as well as Sharpen Edges in Compressor. But if any of you have better ideas, please let me know.

Thanks
 
It might not be interlace if you're scaling things up...could just be plain old aliasing. Try scaling those images in Photoshop or another higher quality program...in fact you should really move the whole thing to After Effects anyway.
 
Maybe, but they look fine on the timeline after upscaling though.

I'll try a small sample via the photoshop route. Will report.

Thanks
 
You are right. Up sizing it in PS does the trick.

Now the problem is I have like 30 of these to upsize, then re-import and re-animate.....

Dang!
 
why re-animate? duplicate the pics you want to scale, scale them in photoshop and then replace the pics in the PR project window right click --> replace, you wont have to do everything again, except from scaling if you haven't set "scale to frame size"... Don't know what your project and workflow looks like though...
 
Thanks guys.

I also noticed that my timeline was for whatever reason 720x486. So I changed the settings to 720x480 and now everything is much improved without de-interlace.

However, there are still some images that flicker, either because there are some lines that are very close to horizontal or vertical, or because they just flicker... is there anything else I can do?
 
BTW, I should also mention that this only happens when I export via M2v as I need to author a DVD out of it. With H264 everything is perfect.
 
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