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Confused by Telecine/Reverse Pulldown Issues
I have a project I’m trying to salvage, and would appreciate help from minds much smarter than my own.
I live captured 10 minutes of footage from my Canon HV20 into a MacBook Pro using a Matrox card and HDMI cable, with ProRes compression. The frame size in FCP 6 shows up as 29.97. I removed pulldown in Compressor and changed the frame rate to 23.976 and then edited and output again to compressor for h.264 compression for my final file, but I see it has significant interlacing artifacts.
Looking at the file that first came out of Compressor, I see that it started out fine, but after a few minutes there are still telecined frames (sorry if I’m not describing this right — I’m an amateur). I thought maybe Compressor was sloppy so I tried JES Deinterlacer on the original clip, but Inverse Telecine was greyed out. It seems the original mov file was mysteriously captured at 28.62 fps, and JES requires 29 as a minimum.
So I converted the original 28.62 to 29.97 in Compressor leaving it untouched otherwise and then passed it through JES, but that also left telecined frames.
I already edited this piece, and even though it’s only 10 minutes, it would be nice not to have to reshoot and reedit. I thought I could somehow get the original clip reverse telecined and then connect the edited footage in FCP to that clip instead of to the one that has issues, but I could use some help. If I’m not explaining things correctly or you have questions, please let me know.
Thanks in advance.
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5 Replies
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Thanks for the response. I was afraid of this. I thought that because I did do pulldown removal first and then edited, and then found out that the pulldown removal wasn’t exactly successful, I could do it successfully and then reconnect media to the properly de-telecined clip. But I guess that if the first pulldown removal didn’t work, I edited footage with pulldown in it, and so I have to start over. Lesson learned, and I’ll make sure I check the JES or Compressor output more closely next time to make sure there are no artifacts of telecining.
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Dave, a quick follow-up question: When I re-edit, is there a way to still use this footage? How can I correctly remove the pulldown this time? JES isn’t an option because the clip has a 28.62 frame rate, and Compressor seems to mess up the removal. Do I have to reshoot, or is there something I can do to get the pulldown out of this clip? I tried changing the frame rate and then running it through JES, but that didn’t get rid of it. Any ideas?
Thanks again.
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Yes, I did try removing the pulldown using Compressor. I basically follow this sequence:
https://blog.abelcine.com/2011/08/19/simple-workflow-for-removing-23-pull-down/
(Though I use ProRes 422 instead of ProRes 422 HQ)
It usually works fine. But in this case, something about this particular clip and aberrations in the capture have flummoxed things. I still have the original clip with 2:3 interlacing, but no matter what I do, I can’t get the pulldown out cleanly. Compressor and JES Deinterlacer both produce clips with interlacing. I think I’m going to have to re-record on Monday to fix this, unless anyone has a better idea.
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I’ve always reverse telecine using Cinema Tools. Never had any issues.
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DK Davis / Editor/ Post Super
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Hello,
Daryl, i see you are using Cinematools, so i hope you can help me.
From 2007 until 2011 we were shooting one documentary movie with Panasonic AG-DVX100, it was used 24p, so now i am trying to reverse telecine, but some of the clips Cinematools looks to process, but at the end my .rev file doesen’t existNow, i don’t understand why, and how can it be?
I was mostly working with PAL materials so far, so in this case i am a bit confused.i have an iMac, Intel Core i5, 2.7 GHz, 8GB memory, AMD Radeon HD 6770M
Thank you
Ana Toader
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