Natron 2.2.8 Released

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Natron 2.2.8

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## Version 2.2.8

– OpenGL interact is now always affected by transforms even if there is motion blur.

### Plugins

– Radial, Rectangle and generators: when the Extent is set to Size, and Reformat is not checked, Bottom Left and Size can be animated.
– add Box filter to Transform, CornerPin, GodRays, and all Distortion nodes.
– ContactSheet, LayerContactSheet: Make a contact sheet from several inputs, frames or layers (beta)

Natron 2.2.5 Release.

Natron 2.2.5

natronnation_2-2-5_logo

@devernay devernay released this a day ago

Fix undo when manipulating 2D points in the viewer interact #1576

Fix manipulating the interact plugin on non-retiming inputs of retiming effects (e.g. the Retime Map in Slitscan) #1577

Fix exporting curves to ascii (eg ColorLookup), and values for xstart, xincr and xend can now be simple expressions.

 

Plugins

DenoiseSharpen: the output is now the noisy source when Noise Analysis is not locked. It is easier to see where there is noise that way, and it also makes the plugin usable in Resolve (which calls render even if non-significant parameters are changed)

Generators now may set the output format when Extent=Size (as they do when Extent=Format or Extent=Project).

Rework many plugins so that they work better in DaVinci Resolve (all generators including Radial and Rectangle, CopyRectangle, DenoiseSharpen, LensDistortion, HSVTool, ImageStatistics, Position)

Card3D (beta): Transform and image as if it were projected on a 3D card.

Natron Digital Compositor version 2.2.4

Changelog:

## Version 2.2.4

– Write: remove Python page, add Info page

– ReadFFmpeg: fix “Image Info…” button (which calls ffprobe) when file path is relative to a project variable

– fix high-resolution application icons

### Plugins

– Readers and writers now only get the colorspace from the filename if it is before the extension and preceded by a delimiter

– BilateralGuided: bug fix

– Natron can now use plugins compiled with the DaVinci Resolve OpenFX SDK (which assumes that the host is Resolve), such as the Paul Dore plugins (see https://github.com/baldavenger/). These plugins may require CUDA runtime library to run. It can be found in the Resolve installation. On macOS, execute cp "/Applications/DaVinci Resolve/DaVinci Resolve.app/Contents/Libraries/libcudart.dylib /Applications/Natron.app/Contents/Frameworks/libcudart.7.5.dylib

Backyard: Come Night Fall – Natron & Lightworks production journey

I am creating a 3 minute short for an iPhone Film Festival that would like to enter. I am using Filmic Pro film/video recording app.  It is one of the best if not the best filmmakers app for the iPhone. I am using Editshares Lightworks to ingest and editing my own personal short films. I own FCPx and Avid Media Composer, but Lightworks has certain effects built-in that I find conducive to my abstract film work.

The image below is an incomplete assembly edit and more footage & audio/sound-bytes will be added.  The main point of this blog is that I wanted to show how you can use free and open source software together to get a project done.

Lightworks

The image below is Natron Digital Compositor. It is a very powerful open source app that provides features that are in commercial digital vfx compositing software. I am using Natron to do all of my 2D tracking and visual effect overlays and then render them out to ingest in to Lightworks for final grading.

Natron-BackYard_Track_Composite

Lightworks can use Natron as a helper app like it was a plugin but there are other issues of roundtrip processing that is not implemented as of now.  Your work around is to create a edit or sub-clip for each shot that needs vfx and render them out. Import them into Natron, process the shot & render, then ingest back into Lightworks for finishing. It is a symbiotic relationship between the two apps.

The video below is a 2D track using two trackers. One tracker was for XY Translation and the second tracker used was for scale and rotation. The wind was blowing a tree in my backyard for the initial opening effect. I use those flower buds to match move my overlaid text.  Natron TrackPM node has gotten better since V2.0 snapshot development. I was able to just use the SAD score tracking algorithm instead of the NCC or ZNCC. Lighting variations didn’t break the 2D solves.

BackYard_Track

More footage will need to be captured and more out door sound bytes will need to be recorded. Natron can handle larger project and effects than this short I am doing. It is nice to see that the tracker is much more production ready.

The video below is a screen capture of Natron’s TrackerPM node in progress.

Natron Motion Tracker & Roto Shape/Mask: Digital Compositor Tidbit

Hello Creative Intellect,

We are seeing more and more films rather they are short or full featured incorporating the use of green screen for background and cost free location replacements. In order to replace these green screens for background photography, the green surfaces needs a marker that a motion tracker can lock on to. These markers would be known as features which color is high contrast. This make it easy for the motion analysis engine to solve a reverse engineered motion.

The image below is a screen capture of an open source digital vfx compositor called Natron (www.natron.fr). It has the ability to composite hundreds of images and effects together using a node based pipeline. On the top left portion of the image you should a woman being filmed against a green screen with a blue marker on the surface. The blue marker provides a nice contrast against the green for Natron’s motion analysis node (aka Tracker) to lock on to. Once the tracker has down all the tracking it needs to do, I can export that tracking data or link to it via right clicking on other nodes that generates transformation or movement.

I am using the Tracker for two processes. One is for matching the movement of the marker for background/environment replacement. The second, is that I am using that same tracking data to mask out the markers so that it doesn’t show or bleed on to the background footage.  I am using a roto node to draw a shape/mask to cut out that marker. All I have to do is link mask my Roto shape to the tracking data and it matches every movement of every frame that the motion analysis node generated. This is a common and an effective way to clean up your shot when roto work is required in the visual effect world. It is a great time saver.
Tracker_Roto_Full

The image below shows a close up of the tracker and on the right side it shows the roto shape acting as a mask. Also in the window is a dialog box that allows you to choose which tracking data that provides the motion analysis.

When working with green screens requires at lease one to four markers for translation on the XY axis. That is known as a 2D track. 3D tracking requires more features to track, but that is another tidbit. I could have animated the roto shape using its own auto keying features, but that would have required more time. This image photo is a video clip with one blue marker to track. Natron gives you the option to link all of the mask points to the center of the marker. This way all the manual shifting of the roto shape/mask is completely unnecessary. The tracker in Natron allows you to export the tracking analysis into a corner pin node, stabilize your shots, and/or link your motion data between nodes.

Tracker_Roto_Full_closeup

This is very basic workflow for what you can do in any digital vfx compositor. Natron tracker is simple to use. You can control a multitude of effects using the Natron’s tracker. If you have more that one tracker to paint out, use the Natron’s tracker and attach a rotopaint node shapes over the marker and link to those trackers.

Natron’s Resize & Transform Nodes: The need for pixel/bitmap based filters

A NatronNation Tidbit,

Filters are very important and needed in compositing when dealing with pixel base or bitmap media. Not all the nodes has the same filters. They are process specific. The attached images are from the Resize & Transform nodes and help note from the Resize node to guide you are recommended filters. The best way to see how they process your pixel/bitmap media is to zoom in to sub-pixel level and switch from filter to filter. There is an a lot of math going on.

The Resize node has gain a few extra filters over the Natron V2 beta development. Study and apply them when needed or necessary.

See attached images below.

Lanczos3_Blackman-harris

Resize_Filter

Transform & Cornerpin