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Downconversion woes

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Downconversion woes
on Sep 30, 2007 at 9:11:25 pm

Finishing a 90min. doc. All the footage is 1080i 29.97 ProRes HQ. Downconverting to SD to make a dvd for a festival submission. (I'd like to master to HD first-- but we're in a time crunch).

It's complicated-- but mastering to tape-- recapturing downconverted, making a dvd-- in a time crunch.

So I have been trying to export downconverted reels out of my FCP timeline 'QUICKTIME with SD 10bit uncompressed settings -- and the exported files look stepped with bad aliasing problems around the edges.

Meanwhile, if I just set my KONA's secondary output to downconvert and playback-- it looks clean.

Why is this? I'd rather not have to output to Tape-- recapture, Add my lower thirds and make a DVD. Since we're not ready to master yet.

Is there something I'm missing?


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walter biscardi
Re: Downconversion woes
on Sep 30, 2007 at 9:59:28 pm

Hardware downconversion is much cleaner than FCP's software conversion.

Keep in mind that HD is Upper Field First, SD is Lower Field first so you're also making a field conversion. Again, hardware does a cleaner job of this than FCP.

Walter Biscardi, Jr.
HD Editorial & Animation for Broadcast and independent productions.

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