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removing pulldown in a mystery video

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Paul Dougherty
removing pulldown in a mystery video
on Nov 5, 2012 at 2:02:03 am

I'm trying to work with a YouTube clip for an in-house rip-o-matic that is 23.98. It has the ghosted "combination" frames that I associate with pull-down in a film transfer. (my edit is 29.9) I know little about it provenance except it was a splash or tease video for a PS3 game, grabbed off the display in Europe. It's really great so I'd like to go the extra yard to help it.

I tried to bring it into After Effects and Interpret it- just poke and hope, guessing field dominance and trying both "guess" buttons - but just get a beep an nothing happens. Is there anything else I could try or look into? Thanks in advance.

Paul


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Chris Wright
Re: removing pulldown in a mystery video
on Nov 5, 2012 at 7:09:03 am

Can you post the link?

I'm thinking that it was originally a PAL 25fps upperfield interlaced, then recorded with a 23.976 progressive. I don't think there was a pulldown. I think when it got decimated to 23.976, it blew away the framerate, fields, and resolution.

I don't think there's enough data to recover the fields. Your best bet is to use reelsmart motion blur and set to -2.00 which will remove the blur.




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Darby Edelen
Re: removing pulldown in a mystery video
on Nov 5, 2012 at 7:37:21 am

I'm confused about some of the details. Is the source 29.97? If you're seeing ghosted frames that aren't made up of two distinct fields then it's pretty much hosed.

Darby Edelen


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Paul Dougherty
Re: removing pulldown in a mystery video
on Nov 5, 2012 at 1:31:32 pm

Source is 23.98, (sources are a mixed bag) edit is 29.9

Is it possible to step through footage one field at a time in AE? I've tried to Google for an answer to no avail

Thanks,

Paul


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Walter Soyka
Re: removing pulldown in a mystery video
on Nov 5, 2012 at 2:10:52 pm

[Paul Dougherty] "Is it possible to step through footage one field at a time in AE? I've tried to Google for an answer to no avail"

Yes. Interpret the footage to separate fields, then double-click the footage to open it in a footage viewer. PageUp/PageDown will move a field at a time.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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Darby Edelen
Re: removing pulldown in a mystery video
on Nov 5, 2012 at 3:56:06 pm

With a 23.98 source if it ever had a pulldown someone has already tried to remove it. Maybe the pulldown was handled incorrectly early on (not uncommon) but removing a pulldown from a 23.98 source wouldn't make sense.

The ghosted frames could also be frame blending caused by a mismatch in the source and timeline frame rates. Do you see the ghosting in a media player (QuickTime)?

Darby Edelen


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Paul Dougherty
Re: removing pulldown in a mystery video
on Nov 5, 2012 at 6:59:04 pm

I see the ghosted frames in the raw YouTube video. Maybe a dumb question but does YouTube even allow interlace in the YT processed videos that appear on their site?

-P


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Dave LaRonde
Re: removing pulldown in a mystery video
on Nov 5, 2012 at 7:09:21 pm

I'm pretty sure everything on YouTube is progressive, but you're dealing with footage that is EXTREMELY iffy in terms of a consistent frame rate.

If Walter Soyka's suggestion in this thread doesn't work, I'd be tempted to track down the game in question and just replicate the shot. There's a good chance it would take less time to get the frame rate right than it would to repair it.

Dave LaRonde
Former Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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