DaVinci Resolve 12 First Look: Automatic Shot Matching

DaVinci Resolve 12 First Look: Automatic Shot Matching

August 6, 2015

A most welcomed new feature in Resolve 12 is Automatic Shot Matching. In this Insight, learn how it works and if it's right for your workflow

Getting Shots To Match Is Just (Sort of) A Click Away!

I get it…

The concept of automatic anything is to a colorist, anathema.

It’s our eyes, scopes and technical knowledge that get shots to match, not some fancy algorithms made by someone who’s never seen the footage that you’re working with!

Pride in shot matching has to be one of the core character traits of any serious colorist.

But you know what?

Not everyone has super developed shot matching skills. And with Resolve in the hands of more editors, and those new to color grading this ‘problem’ is on the rise.

Sometimes there isn’t time for nuanced shot matching – sometimes getting a shot in the ballpark with others is all that matters

Furthermore, I know a lot of colorists would love to have a helping hand to get a match started.

So, in this DaVinci Resolve 12 First Look Insight I want to take a look at the essentials of the new automatic shot matching workflow.  Along the way, I want to make the case that ‘automatically’ doesn’t always have to be a dirty word.

Realistic Expectations

As with other automatic tools, miracles are really not part of the story.

If you use automatic shot matching with the realistic expectation that this functionality is to get two shots more closely aligned, and only in the absolute best circumstances very closely aligned, then you won’t be disappointed with the results.

With that said, here are some things to consider with the automatic shot matching functionality in Resolve 12:

  • Shot matching has nothing to do with other automatic correction features in Resolve including Auto Color and Color Match, which aim to get a single clip to a neutral starting point for your grading.
  • For best results, limit corrections on your ‘source’ clip to common lift, gamma, gain corrections.  I’ve had pretty poor results with curve, log, and other corrections including any secondary corrections. Remember, shot matching is a starting point for getting two or more clips to match.
  • Normalize clips first with a primary correction or by using Resolve Color Management (upcoming Insight on that!).  I’ve found the auto color match to not work well with a graded clip and a LOG clip for example.
  • Make sure the ‘receiving’ clip(s) of the match are ungraded – weird things happen if you try to use automatic shot matching to complete a match – start from scratch with automatic shot matching and then tweak after for a more precise match.

I’d like to preempt the posts on DaVinci Resolve forums about the accuracy of this functionality – it’s not perfect!

I don’t believe it can ever be perfect – there are just too many variables that go into a perfect shot match and for that, you need a human to intervene.

Real-World Workflow

If you go into any automatic tool knowing it’s not perfect and you understand the situations that can screw an automatic tool up then is it worth using and how do you use it?

Let me address both of those questions:

Yes, I believe as a professional colorist that automatic shot matching does have its place.

I’ve been using this tool for general tone and contrast matching in linkage shots between segments of a film or show. It’s helped to speed up this ‘flow’ matching quite a bit.

I’ve also been using automatic shot matching as a starting point between poorly balanced A & B (C) cameras  – not as a magic bullet, but as a quick way to get to a good starting point with a poorly matched shot.

But, because automatic shot matching is never ‘perfect’, I’m always doing more.

As I’ll show you in the movie for this Insight, automatic shot matching is not a ‘correction’ per se but works rather like a LUT in that it’s not directly adjustable on a node.

Just keep in mind that unlike a LUT, which is one of the last things processed in a node, Automatic Shot Matching is one of the first.

So when it comes to tweaking the shot match, practically speaking, it doesn’t matter if you tweak on the same node or for organizational reasons tweak on nodes further downstream.

Now that Resolve 12 Public Beta 2 is out I’m curious to hear how you have been using automatic shot matching or if this functionality is new to you what you think?

As always, please use the comments below.


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Homepage Forums DaVinci Resolve 12 First Look: Automatic Shot Matching

  • Ive had some fairly good results for an “auto” function, especially when used first. Nothing game changing but another tool to try as a starting point. I just wished they made the outline of which node you have selected more obvious, as I keep adding the match to my last node in my “empty” powergrade node setup. I noticed it did match best using”native” Rec709 material like GoPro and DSLR, better that normalized Log. Not sure why tho.

  • Josh Petok

    I would love to see shot matching to a still in future versions!

  • Toby Tomkins

    I wish it worked better with log material, or had a log option. I imagine they could integrate log (just based off of cineon or maybe something softer) to video conversion, do the match science, and then transform the match for log.

    It would really be great as sometimes I still like to work in log and have my ‘normalisation’ at the end of the chain (and sometimes some other corrections after that but that’s beside the point). With the match function only really working with ‘normalised’ footage with only a primary grade, this makes it unusable for me without changing the way I grade, because the match node would be after the normalisation and I would need to grade down the chain from that to take best advantage of the match and the time at which to use the match function (at the start of the grade!). Do I make sense?

    Until then I’ll stick to my scopes and manual matching (-; Scopbox’s HML scopes are a godsend for that!

  • RobbieCarman

    agreed – that would be a fantastic feature – SpeedGrade allows you to do this but kinda silly the file has to be Targa file to do so. But it seems like this would something for Resolve team to implement in th efuture.

  • RobbieCarman

    yeah totally makes sense. And aI agree the log normalization part of it and the way many work can be challenging. To be honest I don’t think this feature is totally intended for people like you and the work you do ! I see editors, crappy cable tv colorists like me! And others looking for a quick speed boost a 900 shot timeline with 1 day to work a helping hand

  • Toby Tomkins

    I honestly think it would be fairly easy for them to implement, but maybe I’m missing something!

    If it worked with log I would certainly try it from time to time! Always good to have more tools available!

    On this feature I’m just finishing off now, the DoP chose a set of vintage lenses that were totally unmatched, one without coating for example, and 20 years between two of the lenses manufacture. It took a long time to match and that time could have been better spent doing the creative stuff. If there was an automatic way to get it 90% there (I’d even take 50%) tI would have certainly used it! Then we would have had more time for the final polishing touches! (-;

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