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Interpreted Fields as Progressive, Getting De-interlacing Artifacts

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Michael ZaharaInterpreted Fields as Progressive, Getting De-interlacing Artifacts
by on Mar 23, 2016 at 5:14:01 pm
Last Edited By Michael Zahara on Mar 23, 2016 at 6:54:45 pm

Hello, my footage is from a HF200 camcorder. I recorded using Progressive Based which is actually Progressive Segmented Frames a 60i.

I look around the internet and I had to Interpret the fields as Progressive because Adobe Premiere is confused since the container is 60i.

Howver, on closer inspection, I notice there is interlacing going on, on moving objects. Please look at this image as it is driving me nuts!

I am using Adobe Premiere Pro 6. This screen grab was taken from exported Cineform codec.





Please zoom in, and look at the face. Seems like I see interlacing.


** UPDATE ** I noticed this using Cineform Codec. When I sued Avid dnxhD, this I didn't see it.

Are there any Cineform decoder settings to follow? I Have Cineform Decoder that Pops up with a red icon, and I use Windows Media Play Classic.



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Chris WrightRe: Interpreted Fields as Progressive, Getting De-interlacing Artifacts
by on Mar 23, 2016 at 7:13:42 pm

I believe its a certain cadence pulldown from 24 to get 60i.
is the advanced dv pulldown greyed out in premiere?

do you have a mac or pc?

Apple compressor:
reverse telecine pulldown Most likely 2:3:3:2 or 2:3:2:3


After Effects:
advanced pulldown WSSWW


avisynth:

DirectShowSource("hanger.mts", fps=29.970, audio=false, convertfps=true)
AssumeTFF()
Telecide(guide=0, post=2, vthresh=30)
Decimate()


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Michael ZaharaRe: Interpreted Fields as Progressive, Getting De-interlacing Artifacts
by on Mar 23, 2016 at 7:36:06 pm

Hello, I am using a PC.

Also, I am not working in 24p. I Choose the 30p on my camcorder HF200.

As stated, Cineform gave me this problem, not DnxhD, haven't tried h.264 yet.


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Chris WrightRe: Interpreted Fields as Progressive, Getting De-interlacing Artifacts
by on Mar 23, 2016 at 9:49:14 pm

that sounds like a bug if you didn't change the field settings.
are you rendering fields off?


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Michael ZaharaRe: Interpreted Fields as Progressive, Getting De-interlacing Artifacts
by on Mar 23, 2016 at 9:52:43 pm

All is set to progressive. Even in Export.

I rendered in Cineform > Then to H.264. Nothing showed in H.264. Must be in the decoder... But what......


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Chris WrightRe: Interpreted Fields as Progressive, Getting De-interlacing Artifacts
by on Mar 23, 2016 at 10:32:28 pm

ok, try rendering a few frames to DnxHD -> then to Cineform-> then finally to h.264.

DnxHD should delete interlacing rendered as progressive bugs.

This should isolate where the error occurs.

There's a very small chance that cineform may be ignoring field settings.

Are you re-importing back into the same project sequence? Try a
whole new project file for reimporting as well. purge cache too just to be safe.


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Michael ZaharaRe: Interpreted Fields as Progressive, Getting De-interlacing Artifacts
by on Mar 23, 2016 at 10:44:57 pm

I imported the new Cineform file as a new Project ofcourse.

I will clean the cache or purge as you might say.


Now the problem going from dnxHD to Cineform is it will degrade the picture more. Cineform is actually a better codec in my opinion than dnxHD.

So what you saw were interlaced frames? Not so visible but something didn't look right.


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Chris WrightRe: Interpreted Fields as Progressive, Getting De-interlacing Artifacts
by on Mar 23, 2016 at 11:03:19 pm

yes, you are absolutely right about losing quality. This is a test for a bug.

Obviously if it works, render out a lossless 10 bit non-cineform, then cineform. I wouldn't even call this a workaround at this juncture because in reality, no one has time to render out twice.

That's why a new project and clearing cache might reveal more possible solutions.

If my concerns are founded, please file a bug report to adobe so that no one else gets frustrated.
http://www.adobe.com/products/wishform.html


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Michael ZaharaRe: Interpreted Fields as Progressive, Getting De-interlacing Artifacts
by on Mar 23, 2016 at 11:30:16 pm

Hello, I uninstalled Cineform Decoder in Controler Panel by searching for "Cine", and now the problem is gone.

Can anyone explain?

I have Go Pro Studio installed. I don't know which codecs from this are there


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Michael ZaharaRe: Interpreted Fields as Progressive, Getting De-interlacing Artifacts
by on Mar 23, 2016 at 11:33:32 pm

Now that I unstalled it. In Windows Media Player, it wont play Cineform now. Just audio.

Windows Media Player Classic does. I heard somewhere that Cineform doesn't play in Windows Media Player. Can someone else chime in here?


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