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Scene Detection workflow suggestions?

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Eric Mueller
Scene Detection workflow suggestions?
on Feb 23, 2015 at 6:24:11 pm

I need to recycle b-roll from a bunch of finished programs (some h.264 masters, but mostly Prores masters) for a new project.

Is there an effective workflow for doing this in CC via a plug-in or Speedgrade's scene detection? Ideally I'd like to identify and move subclips from each existing master into its own bin in PP to use as source material in the new project. I also have Resolve Lite - is there an option via XML that would get those results?

Thanks!


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Trevor Asquerthian
Re: Scene Detection workflow suggestions?
on Feb 23, 2015 at 10:46:54 pm
Last Edited By Trevor Asquerthian on Feb 23, 2015 at 11:13:09 pm

I've done this successfully with Resolve as the Scene Detector and Avid as the destination via AAF.

I take only the 'Cut' info (i.e. Edit Decisions) via AAF, not the media, and use an effect in Avid that will subdivide one Video clip based on a different layer to notch the flattened master.

I've tried this with Resolve to Premiere - and found that I could only rely on the 'Cut' info with this route and had to manually slice up in a similar way to notching in Avid (in fact using a macro to do the manual work)

Here's the potted workflow & where the problems were:

In Resolve:

Create new project (or new folder in Media Pool so your clips don't get confused with any others)
Find clip in Media Tab | Library
Right Click and select ‘Scene Cut Detection’
Click ‘Start’
Save SceneCut (in case of crashes) via the top right 3 dot menu
Refine the edits as necessary (use - to remove them, or adjust the purple 'threshold' for where it detects cuts)
Save SceneCut again (just in case - it'll save you doing that work again)
‘Add Clips to Media Pool’
Switch to Edit Tab
Select All Clips in Media Pool (or folder)
Right click and ‘create sequence with selected clips’ (they should be sorted correctly and now be a timeline of your full clip, but notched)
Right click resulting sequence and export as:

AAF - doesn’t work well into Pr - cuts in right place but sequence clip always starts at beginning of source clip. Also audio is ‘nested’ for some reason.

XML - again cuts in right place but source clip always at start

EDL - not linked, no audio, no cuts as presumably optimised - not much use

FCP1.3 or 1.4 XML - will not import

SOLUTION:

Export from Resolve as AAF

Import that AAF to Pr and delete audio tracks
Import full clip to Pr and ‘create sequence from clip’
Put AAF timeline on V2 of this sequence
With V1 & V2 selected:
step to next edit
add-edit
repeat


I've not used this in anger in Pr though. Oh and the Speedgrade scene detection was a lot slower



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Eric Mueller
Re: Scene Detection workflow suggestions?
on Feb 24, 2015 at 1:14:12 am

Thanks for the detailed info, Trevor. I figured an XML route would be better for Premiere/Resolve, but I may just move this to MC based on what you're saying. As an added benefit, I'll have something billable to show for the $295 I sent to Avid on December 31st...

Thanks again!


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Ju Dor
Re: Scene Detection workflow suggestions?
on Nov 24, 2015 at 8:44:15 pm

Hi Trevor
What do you mean with this? and have these issues been resolved (no pun intended) with the latest versions of Resolve 12 and Premiere CC 2015.2

sequence clip always starts at beginning of source clip.

XML - again cuts in right place but source clip always at start

I like the idea of scene detection. Could save a lot of time.

Also, has anyone had any luck with this script for premiere?
http://aescripts.com/magnum/


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Trevor Asquerthian
Re: Scene Detection workflow suggestions?
on Feb 23, 2015 at 11:15:37 pm

CatDV also has scene detection - and is much more able to log and provide subclips to various NLEs



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