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Artifacting in compressor

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Danica Barnes
Artifacting in compressor
on Feb 17, 2011 at 8:08:02 pm

I'm having a situation where I have an FCP sequence in which there is a jpg that I have applied a slow zoom to. This portion of the sequence plays back nicely in FCP and also when the sequence is exported to a quicktime movie. Yet, when I send this sequence to compressor, this portion of the sequence comes back filled with digital artifacts. Any idea what is causing this?

I'm working in FCP 7, and the codec for the sequence is ProRes LT. My compressor settings were 90min Best Quality 2 pass VBR. I have also tried exporting the problematic clip as a Quicktime movie to embed the effects and then dropped it back into my sequence. This doesn't help the problem after everything goes to compressor, though. Interestingly, I have also used the one pass compressor setting, and the artifacting goes away, but the rest of my sequence looks terrible.


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Rafael Amador
Re: Artifacting in compressor
on Feb 18, 2011 at 2:53:54 am

[Danica Barnes] "m working in FCP 7, and the codec for the sequence is ProRes LT."
Hi Danica,
Try setting "Render in High Precision" and "Render Motion Effects: BEST" (FC sequence settings).
rafael

http://www.nagavideo.com


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Rafael Amador
Re: Artifacting in compressor
on Feb 18, 2011 at 2:56:24 am

BTW, unless you are constrained by storage space, ProresHQ is always a better option than the others.
Avoiding re-compression as much as you can, is the way.
rafael

http://www.nagavideo.com


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