Intro to Compositing in Natron

OpenVFX_NatronMural_header_flat_01

Finally, I’ve finished this up and I’m getting it out there! The first Natron tutorial for OpenVisualFX. If you haven’t heard of Natron, it’s an open source compositing program very similar to Nuke. In fact, it’s similar enough that if you know one, you know the other. I wanted to come up with a fun scene with some relatively standard compositing work, the kind of thing an artist at a professional studio is going to be doing all the time, and the TNT television show The Last Ship gave me the perfect opportunity.

Occasionally I do some work on The Last Ship, and for season 3, episode 1 (see it at 1:55-2:08), I was tasked with putting a mural of one of the characters on a brick wall. In the world of visual effects, it was a pretty easy shot, and while working on it, I thought it would be a perfect introduction to compositing. While not being a complex shot, it does involve many techniques that are very commonplace and useful in visual effects.

Check out the scene we’ll be working on. Download it HERE.

 

I called up some actors, found a location, and went out to shoot a scene that replicates the shots from The Last Ship. It’s just a quick scene, where our main villain stumbles across a defaced mural of herself. And we won’t be concentrating on sound in this tutorial, so for the audio, I’m simply providing the finished clips as individual WAV tracks. That way, if you want to change things from what I did and put in your own music or sound fx, you can.

 

Check out the intro video above, download Natron and the assets below, and let’s get compositing! Keep a notepad nearby, there’s lots of hotkeys to remember. And if there’s anything specific you’d like me to cover in the future with Natron, please message me!

Oh, one last thing. I’m posting the script for the shoot, as well. It’s nothing amazing, and in fact, it’s not even a full page long. But this way you can see what went into getting the shots. Both the Trelby file and the PDF are in the zip file, and you can see how much it differs from the final scene.

Credits:
Leader – Joanna Triantafyllidou
Henchman – Stephan Singh
ADR – Kristen Kennedy
PA – Paul Herskovitz
Sound design – Vince Tennant (here’s a short video about my friend Vince!)

Assets required:

Right click the names of the tutorials to download the videos directly.

Intro Tutorial – The Natron UI.

 

Tutorial 1 – Tracking & removing the window.

 

Tutorial 2 – Integrating the mural & creating a luma matte.

 

Tutorial 3 – Adding the graffiti.

 

Tutorial 4 – Adding some finishing touches – color correction, bloom, flare, and grain.

 

Tutorial 5 – Moving on to the next shot, which has different challenges, beginning with tracking.

 

Tutorial 6 – Removing the window, bringing in the mural and aligning it to match the previous shot.

 

Tutorial 7 – Copying over the luma matte, graffiti, and all the style nodes, then getting started on the rotoscoping.

 

Tutorial 8 – Timelapse of the rotoscoping.

 

Tutorial 9 – Finishing up the shots.

 

Tutorial 10 – BONUS! Hopefully, if you’ve watched to this point, you should have a pretty good guess at what it is.

20 comments

  1. Finally! I have been waiting so long for this 🙂

    As always a really fantastic tutorial, and on top of that I finally understood clean-plates and rotopainting, rotopainting has always given me a headache in natron.

    Liked by 1 person

    1. I haven’t yet, but I haven’t tested v2.3.1 yet, so maybe they fixed it? It was just released a few days ago. Slammed with a project right now, but as soon as it’s done, I’ll test it out, and if it’s still broken, will show it to the developers.

      And your welcome! 🙂

      Like

  2. Thanks for this Sean. I’m wondering if Gaffer (gafferhq.org) is on your radar at all? Seems to be another node based, OSS, VFX thing. Not sure how it compares with Natron.

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    1. I have seen the website for Gaffer before, but I’m not 100% clear on what it is. It seems like something perhaps built more for lighting and shading 3D, but that can also do some compositing as well? Looks interesting. I think something like Fusion, which isn’t open source but is free, will compare more directly with Natron. But Gaffer is definitely worth keeping an eye on. Maybe I’ll look up some tutorials on it next week.

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      1. Yeah, same, the description makes it sound like a general purpose compository thing but the examples seem to focus on 3d modeled stuff. Would be awesome to have an assessment from somebody who actually knows about this stuff.

        Liked by 1 person

  3. Thanks so much for creating these tutorials. I am new to Natron but coming from a Nuke background it’s pretty easy in terms of understanding the software. Not that stable but looks great, and hopefully will continue to be supported. Haven’t finished your videos yet but where did you get the Ignite Plugins from, cant seem to find them? Would be great to get them installed. Thanks

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    1. Glad you like them! Have you found Natron to unstable? Is it crashing, locking up? I’m very curious to hear what you’re experiencing with it. And thanks for asking about the Ignite plugins! I totally forgot to post links. I’ll update the post, but for now, here’s the link to grab them. https://hitfilm.com/ignite-express

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      1. Great thanks for the link. I’ve just had a few crashes in Natron, one most recently being just trying to open the Glow node. And it does seems a bit slow/laggy (on Mac – not tried any other platform). But I haven’t used it extensively yet and been using MP4s rather than DPXs. So probably a few areas I need to explore too. However, it really seems like a great piece of software considering it’s free, and seems like the team involved have done a good job, would be very happy to see it develop further!

        Liked by 1 person

      2. If you do find bugs or things that crash it, please get involved with development! At the very least, head over to the forum on their website and post the problem there. I really want them to keep making it better so it gets adopted more and more!

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      3. Personally my biggest issues have been viewer errors and what could possibly be a memory leak. With the viewer when you start to get a complex node tree certain levels of ‘zoom’ will cause glitches in the viewer. Just zooming in or out usually fixes it.

        With memory the app starts off reasonably but the longer I use it the more and more memory gets eaten up. Clearing all the caches doesn’t free any RAM. I open a file and it takes 2.5gB but after a few run throughs and some new nodes it maxes out the full 16gB of RAM on my desktop.

        Liked by 1 person

      4. Yeah, you should definitely head over to their forum and post these comments over there! Maybe even with some screenshots of your memory usage. I’m sure they’d be anxious to jump on it and figure it out!

        Like

  4. Awesome tutorial !!! Very good explanation from start to finish. Natron is a very good Nuke alternative for video composer. One thing I would have liked to see was the development of the weapon section in Blender and then the integration in the Natron. Still 100% recommendable. Great job, waiting for other tutorials of such quality.

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    1. I could show that in the future if more folks want to see it. I wanted to leave a little bit for people who follow along to try and figure out themselves. 🙂

      Like

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