Tuesday, December 1, 2015

Re: [Avid-L2] 2:3 pulldown in a Progressive project?

 

the workflow i use is a bit convoluted, but works extremely well: create a project at the native frame rate of the clip(s) needing conversions - either 23.98 or 25; import clips; lay clips out in a timeline, do a video mixdown; close this project, open 59.94 project; open bin from 23.98 (or 25) project, drag video mixdown into the source monitor, then cut clip(s) into place in the 59.94 sequence; clip will have green dot, go into effect mode and click on clip, which will open motion effect editor; click the "Promote" button, and make sure "Type" is set to "Both Fields" - render; highlight clip and do video mixdown while still in 59.94 format; switch to 1080p 29.97 and cut the mixdown in on a different layer (i usually keep them one over another for organization) - you will see a green dot, render, and see how it looks. i'm pretty sure i got all of the steps correct (doing this from memory) but you can double-check online - this is the commonly used workflow for these conversions.



On Dec 1, 2015, at 5:40 PM, John Moore bigfish@pacbell.net [Avid-L2] <Avid-L2@yahoogroups.com> wrote:


Working on a show that is to be delivered at 29.97P 1080, There is a large amount of film media that has 2:3 pulldown which of course plays nice in an interlace world but is problematic when rendered in a progressive manner baking in the split fields.  I know the show will be broadcast interlace in the end so in my mind the 2:3 pulldown is the best cadence for that but technically that could be flagged by QC as not true progressive.  I expect that might happen when the show hits the digital delivery folks.

This got me thinking that the only cadence that would be correct f or 29.97P would be 2:2:2:4 so that each frame is clean with not split fields.  I've read threads on the L2 where people have mentioned that for some European QC concerns they required 2:2:2:4 instead of the normal 2:3.  I know FCP 7 use to create the 2:2:2:4 cadence which always drew complaints.  Is there a way in Avid to force a 2:2:2:4 cadence?  I know in time warps I can choose 2:3 pulldown but don't recall anything else.

Ideally something that would detect the 2:3 pulldown and then create 2:2:2:4 so rendering in progressive would have clean frames.  Perhaps I should look into BCC 8 I know they have deinterlace so maybe there is something in that area that might fit the bill.  

Curious what others do to avoid the Plant of the Progressive QC Monkeys.
 
John Moore Barking Trout Productions Studio City, CA bigfish@pacbell.net


Bruce Tovsky
Razor & Tie
212-598-2290 (direct)
212-473-9173 (switchboard)
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