Four Corners

Complex Tracking

As the final node graph in Figure 5 shows, tracking and projecting is not all that complex in Natron – it can be sorted in six nodes, including the Viewer. Admittedly, there are quite a few parameters to fiddle with to get it right, and creating the trackers can be a pain, especially with low-quality footage. All that said, it is not crazy hard, just a little tedious.

Then again, the example I have chosen is pretty straightforward: The markers the trackers follow are on screen all the time, and there is nothing in the way covering the projected clip at any moment. If you want to go the extra mile and learn how to have objects occlude your projected video for extra realism, look into rotoscoping, which is the technique where you "cut out" an object and then follow it in a similar way to trackers, but using a silhouette instead.

Be warned that rotoscoping is very laborious, but it can produce some really impressive results.

Conclusion

Natron is an amazing piece of software, that could help transform GNU/Linux from a system for amateur film-makers into a viable platform for professional video processing.

However Natron is in danger. Nobody has been in charge of developing Natron since August, and the funding from Inria has dried up. This could mean the end of Natron; a demise made ever more tragic by the fact there are no other free and open source software applications like Natron. The closed proprietary alternatives can cost thousands of dollars and tie you into opaque formats, proprietary online services, and predatory agreements.

If you can help Natron or know someone who can, please take action before it is too late.

Infos

  1. "Tutorials – Natron" by Paul Brown, Linux Magazine, issue 220, March 2019, pp. 90-94: http://www.linux-magazine.com/Issues/2019/220/Tutorials-Natron
  2. Natron: https://natrongithub.github.io/
  3. Tears of Steel: https://mango.blender.org/
  4. Notebook clip: https://cloud.quickfix.es/index.php/s/AbWNW6Rpamy77n9

Buy this article as PDF

Express-Checkout as PDF
Price $2.95
(incl. VAT)

Buy Linux Magazine

SINGLE ISSUES
 
SUBSCRIPTIONS
 
TABLET & SMARTPHONE APPS
Get it on Google Play

US / Canada

Get it on Google Play

UK / Australia

Related content

  • Tutorials – Natron

    Natron allows you to create eye-catching effects and combine different video clips in surprising ways, letting you build up your clips like a pro.

  • Tutorials – Natron

    Natron gives you the power to apply sophisticated effects to your videos, but its node-based interface can be a bit confusing. This tutorial will help you get a grasp on the basics.

  • Gobbling Up

    Most video editors supply you with a generic catalog of transitions, usually in the shape of tired wipes and fades. But what if you wanted something a little more special? FFmpeg to the rescue.

  • Tutorials – Kdenlive and ImageMagick

    By using two very different tools, Kdenlive and ImageMagick, you can make animation less tedious and create some pretty cool video effects and transitions.

  • Command Line – Melt

    Whether you are an expert or a beginner, you can learn to edit audio and video clips at the command line with Melt.

comments powered by Disqus

Direct Download

Read full article as PDF:

Price $2.95

News