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Pixelating PAL DV video

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Pixelating PAL DV video
by Lars Therkildsen on Sep 8, 2008 at 6:10:49 pm

Truly hope you can help me here.

I just recorded some DV Pal 16:9 footage on a greenscreen. The thing is that AE Cs3 (Mac) seems to pixelate the video. And that's before I even start to play around with it. A straight export from AE, again no playing around with the data, makes the quality lower or more pixelated.

The original clip in quicktime says 720x576 (768x576). The one out of AE says 720x576 (1024x576). I'm aware that the 1024 part is due to the video being anamorphic. But it seems like AE might be transforming the video to 720 pixels?

Anyway, I get no loss in data/quality if I throw the footage into Final Cut, and I can't recall having experienced this before. And yes i am displaying full quality and rendering in dv pal 16:9 25fps, best qual.

I've taken some screenshots of an area from the footage that shows the problem.

First, quicktime and great qual:
http://www.gostil.dk/quicktime.png

Second, export from AE
http://www.gostil.dk/ae-export.png

Thrid, preview in AE
http://www.gostil.dk/ae-preview.png

What do you think the problem is?

And thanks in advance!

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Very wierd solution
by Lars Therkildsen on Sep 8, 2008 at 7:30:25 pm

Okay I have now managed to fix this situation. I threw my dv footage into FCP and exported it as Animation, and that makes AE display it in full quality. But still what is happening?



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Re: Very wierd solution
by Chris Wright on Sep 8, 2008 at 8:15:54 pm

Check your interpret fields and best edges, resolution, and export settings. Here's the rundown...


D-1 PAL -Discreet edit* PAL
Frame size: 720 x 576
Frame aspect ratio: 4:3
Pixel aspect ratio: 1.067
Frame rate: 25 fps
Field order: upper field first

PAL Video Frame size: 768 x 576
Frame aspect ratio: 4:3
Pixel aspect ratio: 1
Frame rate: 25 fps
Field order: lower field first

PAL-DV Frame size: 720 x 576
Frame aspect ratio: 5:4
Pixel aspect ratio: 1.067
Frame rate: 25 fps
Field order: lower field first

PAL-DV Widescreen
Frame size: 720 x 576
Frame aspect ratio: 16:9
Pixel aspect ratio: 1.422
Frame rate: 25 fps
Field order: upper field first



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Re: Very wierd solution
by Lars Therkildsen on Sep 8, 2008 at 8:34:18 pm

Ah thank you very much. AE interpreted the footage as lower field first, I set it to off and everything is fine. Again Thanks!



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