Idiot mixed 24P with 24Pa

_joe

_joe

Member
and for clarification idiot = me

so I went out with the intention of shooting in 24Pa, but somewhere along the running and gunning, the scene selector wheel clicked over to a setting I had for 24P.

Captured into avid via firewire into an Avid MC 23.97 timeline and everything looked just fine and dandy mixing between the P and Pa. Even encoded in a small .mov encoded with H.264 with no problems.

HOWEVER, when I now want to export to DV/DVPRO - NTSC with the current frame rate, progressive, the P footage now shows significant banding/field problems/whatever you want to call it. I've included a pic for kicks.

I'm a bit miffled as to what I can do to solve this problem since I'm a bit of a newbie when it comes to creating video for things other than the web. I thought re-exporting and deinterlacing from QT would work out the problems, but that only reduces the image quality overall.

Any help would be greatly appreciated/deserving of a cookie and metal. Thanks :-D
 

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That's just interlacing. That's the difference in 24pA and 24p. 24pA tags interlaced frames to throw them away like they never existed. 24p keeps them so that the video can conform to NTSC tape standards of 29.97 or 59.98 fps. On a tube screen, you will never see these lines. On a progressive monitor you will.

Anyway you just need to deinterlace it.

Easy and probably best:
Use Graeme Nattress's film effects on those clips. ($99) The Nattress film effects deinterlacers / rate converters let you deinterlace only the moving parts of the image which is where the interlace lines show up, so that you can maintain highest resolution in the non interlaced parts.

Easiest and free:
Use the deinterlace filter in FCP.

Another way.
Put the 29.97 clips in Compressor. Use the frame rate coversion window to go from 29.97 to 23.98, and use the interlace filter. Then bring the clip back into FCP


If you try the Compressor method let me know what your results are like.
 
Thanks Jack; I was worried that I might have to spend addition money to fix >.<

for additional clarification, I'm on a PC running avid, so I'm not sure if that changes/adds any solutions.

I assume that I'm going to have to decompose the footage, take the shots that are interlaced, run them through the de-interlacer, put them back into the timeline, and then rexport for the best best?
 
lol. sorry all of my solutions are not applicable.

Nattris and the Deinterlaceer in FCP are filters. Dunnow about avid, but if it has filters you can apply just look for the deinterlace and flicker filters and then you can do it in your timeline. If there are options to use light and heavy settings try the light ones first.
 
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