Skip to main content

Dynamic Rendering

Pro Feature

Pro features are only available with a Professional licence. To upgrade, visit cavalry.scenegroup.co

Intro#

Dynamic Rendering can be used to generate different values at render time and so generate many variations of the same single Composition.

  • Create variations on some abstract procedural artwork/animations.
  • Automate otherwise time consuming and error prone workflows.
  • Set up versioning for your endboards.
  • A/B testing.
  • Output personalised advertising.
  • And more...

Options for Dynamic Rendering can be found in the Render Manager.

Setting up a Dynamic Render#

Dynamic Rendering consists of two main components:

  • Dynamic Index - An attribute found in the header of the Render Manager that simply outputs a value that increases by one each time a render completes.
  • Number of Renders - An attribute found under the Dynamic tab of a Render Queue Item (RQI). The value set here determines how many times Cavalry will render the RQI (Note - Dynamic Render must be checked).

If Number of Renders is set to 3, Cavalry will render the Render Queue Item 3 times. On the first render, the Dynamic Index will output a value of 0, on the second render – a value of 1 and on the third – a value of 2. This simple concept can be put to work to create variation for each output.

In the simple example below, the Polygon's sides are being driven by a Value Array which is already connected to the Dynamic Index. By dragging a connection from the Dynamic Index to the Array Index of a Color Array both the Fill Colour and the Sides of the Polygon will change at render time.

The Dynamic Index Offset can be used to preview the results.

  • A value of 0 outputs the first index (green) on the Color Array.
  • A value of 1 outputs the second (yellow).
  • A value of 2 outputs the third (pink).

To output all three variations the Number of Renders under the Dynamic tab is set to 3. During rendering, Cavalry iterates through Dynamic Index's 0, 1 and 2 and outputs a separate file for each one.

The same technique is used in the following example but via a Spreadsheet node containing team names and hex values to drive a Text Shape and the coloured background Shapes. The logos are set up with two SVG Assets added to an Asset Array and then connected to an SVG Shape.

Imagine what a time saver this could be for all 32 NFL teams when your client wants to change the height to 40px! You only need to make that change once and then hit Render. Cavalry will do the heavy lifting for you.

Filenames#

By default, when using Dynamic Rendering, files will be written to separate directories that correspond to the Dynamic Index (0, 1, 2...). This is to prevent files from overwriting each other. Alternatively, a <Dynamic> Render Token can be added to the File Name in the Render Manager. This token will add the number of the Dynamic Index to the File Name and means that files are written directly to the specified Path.

It is also possible to create dynamic filenames by connecting a String to the File Name attribute. For example, by connecting Spreadsheet data to the String, the contents of each row of a spreadsheet can then be used to generate the filename for each output at render time. This functionality can be extended further via a Formatted String String Generator which can daisy chain strings together.