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flicker on old footage

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dan crouch
flicker on old footage
on Mar 26, 2013 at 9:45:25 am

I have a flickering on some old footage that I can't get rid of.
It was Pathe footage, cut in fcp. I have slowed it down to 75 percent.

Anoyingly the dvd authoring has started so I can only re export the video layer as sound has been done.

https://vimeo.com/62685657

Please can anyone help with this.


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Rafael Amador
Re: flicker on old footage
on Mar 26, 2013 at 11:11:10 am

What I see is some frame blending that looks very ugly.
I guess introduced on the slow down and may be by a wrong managing of data bases.
Try keeping the speed at 75%, but uncheck "Frame Blending" on the speed window.
Which is the time-base of the archive footage, and which is the sequence time base?
rafael


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Neil Patience
Re: flicker on old footage
on Mar 26, 2013 at 11:14:26 am

In some ways the age of the footage and its very interesting content forgives a certain amount of flickering and artefacts. Having said that It looks like a field issue or maybe some frame blending thats not helping. Does de-interlacing help at all?

best wishes
Neil
http://www.patience.tv

8 Core MacPro, Kona 3, Tangent Wave, Mackie Universal Symphony 6.5 FCP7
i7 2.7 Gig MBP (non retina) 16Gigs Ram Blackmagic Monitor Mini Symphony 6.5 FCP7


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Chris Tompkins
Re: flicker on old footage
on Mar 26, 2013 at 12:04:28 pm

It looks like the shutter flicker from the old film footage. By slowing it down you are magnifying it.

Chris


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Dave LaRonde
Re: flicker on old footage
on Mar 26, 2013 at 1:52:00 pm

[dan crouch] "...Annoyingly the dvd authoring has started..."

Oops. Big oops. You're way too late to fix the frame rate mismatches.

And since we don't know the actual provenance of this clip, nor most importantly, we don't know the various frame rates used throughout the project nor how you mixed frame rates nor how you slowed down the footage in question, we can't even offer constructive advice on how to avoid the problem for future projects.

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


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dan crouch
Re: flicker on old footage
on Mar 26, 2013 at 2:11:30 pm

Thanks v much all for the post's.
I am busy until tonight so will check out the suggestions.

Re the authoring, the sound is mixed and ready, but the video layer can be re done so need to get this sorted before we commence.

It was slom-mo'd at 75 percent and de-interlaced.

I did pull the original clip into Avid but the same thing happened. I can only think it was filmed at a really strange speed and the conversion is confusing it. I have a feeling it may need to be re tele-cinied (which would be a pain).

Thanks again for post's
Dan.


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Joe Barta IV
Re: flicker on old footage
on Mar 26, 2013 at 2:36:35 pm

Most of these early film cameras ran at 18fps, so you'd have to start there with the telecine and adjust accordingly as you move it into digital editing, yes, a pain.


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jerry wise
Re: flicker on old footage
on Mar 26, 2013 at 3:17:16 pm

it sort of looks like "lower field" footage that was dropped into an "upper field" timeline.


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Dave LaRonde
Re: flicker on old footage
on Mar 26, 2013 at 3:44:19 pm

Oh, the field order mixup ain't all it could be! Get a load of this litany of pitfalls:
  • The original footage was in a silent movie. Was it shot at 18 or 24fps? Who knows?
  • How was the footage telecined? To what frame rate?
  • What was the frame rate used in the FCP edit time line? Was any applicable pulldown removed?
  • The footage was slowed down to 70% of normal: how was it slowed down, and what software application(s) were used to make the new frame rate work well in the edit timeline's frame rate? Who knows
It could be one problem, it could be a combination of problems. This is a potential frame rate train wreck, being addressed near the end of the project instead of at the beginning, which would have minimized problems.

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


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Shane Ross
Re: flicker on old footage
on Mar 26, 2013 at 4:49:16 pm

As said, old footage was shot at 18fps. And the flicker is due to early cameras not having rock steady shutters, so exposure varied.

The flicker is normal...it's on pretty much all footage from that era. Let it go. We are used to seeing that by now...it's not distracting. Well, unless you are in your 20's and might have an issue with old footage...many young people don't want to even watch black and white.

I say live with it. Trying to fix it will be a frame by frame job that'll last quite some time.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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