Pulldown and Jerky Footage

NorBro

NorBro

Major Contributor
Hi,

I'm new to the whole 24p in 60i wrapper and pulldown removal concept, but I get it a little more after reading all the wonderful threads.

Quick Question:

Some people say that the footage is supposed to look jerky and jumpy before the pulldown, but I don't see it.

I logged and transferred my footage into FCP. I dropped and conformed the timeline and it looks fine. I checked the settings and it was 29.97fps that looked normal.

Thoughts?

Thank you.
 
FCP doesn't remove it correctly after a lot of testing. Well I think that also depends on the version you have. The latest version released might handle it but I haven't gotten any confirmation from anybody. JES removes it correctly. You should do a side by side comparison and you will see the difference. I didn't notice it at first using FCP until I did some nice and slow pans. The info on how to do the JES workflow is in the workflow section of the GH1 forums. It is a stickie at the top.
 
I've been using JES too and have tried Compressor as well.

Is one method better than the other? I can't notice the difference.

What are the steps for Cinema Tools?
 
I also looked very hard in FCP and I really don't see the jittery or jerkiness in it. I know exactly how it looks as I remember seeing it a few times before, but it's really not there now...

I'm not sure.
 
Any more info about the cinema tool version of the telecine? Mine always get wierd with ghosting and such.
 
I've had no problems using Compressor to sucessfully remove pulldown. Attached are my compressor settings.

Please note that AVChD is 8bit so this setting also converts to 8bit (no need for 10bit)
 

Attachments

Cinema Tools is pretty easy... You can either do a batch reverse telecine or do a clip individually. I usually just open up cinema tools, go up to file and hit batch reverse telecine and lead it to the folder where all of my scratch files are... Depending on how many and how long your clips are it can take a bit, but it is relatively fast considering. It then spits out files named the exact same with a .mov.rev extension in the same folder with the original interlaced clips. I then delete the interlaced clips, reopen fcp and import the new progressive clips. That's pretty much about it. Sorry it took me a bit to answer the above question, but was out of town shooting. Hope this helps.
 
After some testing, FCP7 seem to get rid of the pulldown if you drag the clip in a 23.978 sequence. Anyone wanna confirm?
 
Oh, by the way....do you change any settings when you open up Batch Reverse Telecine?

It asks about Fields and stuff....
 
NorBro, I just leave it as is. If you want you can analyze the clip in cinema tools first to make sure that those settings match the original clip, but you should be good. It's not a destructive process like conforming, so if it doesn't look right the original interlaced file is still intact...
 
Rabot,

It looks like it does do it, but I did a side by side test of an interview and to me it seemed to playback a lot cleaner in the clip that was reverse telecine transferred in cinema tools. I noticed some slight jerkiness in the footage that was just dropped in the timeline. I'm shooting more this week and will do another test with some better footage, but for now, I'm going to stick with cinema tools..
 
811productions
when you open cinema tools for the first time, you probably need to set new database.
There are four settings (Film standard, Video TC Rate, Sound TC rate, Telecine Speed)
What's your setting? Thx
 
Abolit,

Sorry out of town on a shoot and this is the first time I was able to get back... When you open Cinema tools it doesn't matter about the database, because you won't be using it for reverse telecine. Put in whatever you want, it doesn't matter. Just open the clip using cinema tools, hit reverse telecine in the lower right corner. Make sure field1-field 2 is checked, AA is checked, it's at 23.98 and standard upper lower is unchecked. Once you do that once, Cinema Tools will remember that and from here on out you can do a batch reverse telecine without having to adjust your settings....Hope this helps.
 
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So it can be confirmed that the newest FCP handles the GH1 clips okay? It removes pulldown properly? That is good news if it does.

I did some extensive testing using the FCP/Compressor method to remove pulldown and the JES method and FCP/Compressor did not remove properly. There was jerky footage in slow pans but in JES it was smooth as silk. I was hoping the latest version of FCP/Compressor would do it. Just the additions to Color makes me want to go for it but I might just hold off until I know it is removing pulldown properly. Something about Log and Transfer not removing standard 3:2 pull down and the GH1 isn't exactly standard. I never went any further into that just did comparison tests and it seems there is truth to it because I can surely see it. Now that I have seen it I see it on all kinds of GH1 footage.
 
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