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Old October 4th, 2008, 10:35 AM   #1
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How To Convert 1080i to 1080p?

Hello,
We are currently posting a documentary feature that we just wrapped principle photography, and we are trying to cut in footage with from our EX1. The film was almost entirely shot on the EX1 at 1080 24p HQ (the image is stunning...love the cam!). We were given additional footage in 1080i, and tried the conversion in FCP and with an AJA IO, but even though the quality is nice the image looks jittery.

Anyone have any experience with this? Can you post some tips for us?

Thanks,
JA
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Old October 4th, 2008, 10:40 AM   #2
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Originally Posted by Jason Aumont View Post
Hello,
We are currently posting a documentary feature that we just wrapped principle photography, and we are trying to cut in footage with from our EX1. The film was almost entirely shot on the EX1 at 1080 24p HQ (the image is stunning...love the cam!). We were given additional footage in 1080i, and tried the conversion in FCP and with an AJA IO, but even though the quality is nice the image looks jittery.

Anyone have any experience with this? Can you post some tips for us?

Thanks,
JA
JES Deinterlacer isn't just for HV20 owners importing 24p footage. JES de-interlacer can deinterlace footage as well.
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Old October 4th, 2008, 01:38 PM   #3
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Compressor is pretty good at de-interlacing. You need to turn on frame controls and use the motion adaptive or motion compensated de-interlace options for the best results.
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Old October 5th, 2008, 03:32 AM   #4
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Originally Posted by Jason Aumont View Post
1080 24p HQ ... additional footage in 1080i
I strongly recommend that you give DVfilm's Maker a go.

Specifically, it converts 1080i60 to 1080p24. That is its main raison d'Ítre.

Film Look Deinterlacing for DV - DVFilm Maker, aka DVFilmmaker

The deinterlacing is one of the best I've used. It is motion sensitive, with adjustable sensitivity, so only areas of movement get deinterlaced and get softened a little.
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Old October 5th, 2008, 04:47 AM   #5
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so Dvfilm Maker has to do some softening to hide the deinterlace artifacts? Dosnt sound so good to me. Compressors motion predictive deinterlacing is very good and dosnt degrade the image.
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Old October 5th, 2008, 12:18 PM   #6
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so Dvfilm Maker has to do some softening to hide the deinterlace artifacts? Dosnt sound so good to me.
Something's got to go. It doesn't 'have' to do some softening, it just expresses that as part of the deinterlace procedure. Compressor is inventing pixels in its full-on frame controlled optical mode, Maker is doing the standard - may have got this wrong due to defective memory - deinterlace method, which for the life of me I cannot remember the name of. Anyroadup, it is not line doubling, it's the other one that does 25% resolution loss.

Compressor, in its full on frame controlled optical with motion compensated mode isn't infallible, either. We have to approach such situations with the 'test early test often' mantra. I also used it with some motion graphics recently and got some 'bobbing' on the banished fields. It didn't cope with motion graphics very well. TETO to the rescue once again.

As a fix for rushes, I'd go with DV Film Maker as the footage is B Roll. As a fix for the final film done in 60i (shudder), Compressor's full-on mode would perhaps get you 20% better results.

Both methods would be XXX% better than many bits of software out there.
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