Reference > Tools > 

Stream Tools

 
 
 

Use the Streams tools to perform identical processing on multiple image streams avoiding the creation of identical sub-graphs to process a number of images in the same way. The Streams tools can also be used to support a stereo workflow in Composite —see Stereo Viewing. There are three Streams tools:

Use: To:
Merge Streams merge multiple single-stream image inputs into a single multi-stream output. It has a single multi-valued image input socket, and a single output socket. You can connect as many inputs as you like to the Merge Streams tool.
Extract Streams extract single-stream image outputs from the Merge Stream node using the Selector value editor.
Stereo Streams input left eye and right eye image streams to create a 2-stream stereo image. The Stereo Streams tool takes two single-stream inputs and combines them into a single dual-stream output, placing the left image in stream 0, and the right image in stream 1.

In the application, the default stream is stream 0. For example, if a color picker is used in the player, it will pick stream 0. If you pick a color in the Keyer, it will pick the color from stream 0. If you click Fit to Source in a warp tool, it will fit to stream 0.

Note Paint strokes will only be applied to stream 0.

Performing Multi-stream Processing

You can perform identical processing on multiple image streams. The following example workflow applies a blur to five imported layers.

To apply a blur to multiple layers:

  1. Import multiple layers into Composite. Composite creates a composition per layer.
  2. Perform a multiple selection of the imported layers, drop them into a new composition and swipe through the Link option. Composite creates a link node per layer in the new composition.
  3. Drag a Merge Streams tool from the Streams tool folder and drop it into the composition.
  4. Connect all layers to the inputs of the Merge Streams node.
  5. Drop a Blur tool into the composition and connect the Merge Streams output socket to its input then change the blur parameters.

    The blur is applied identically to all five streams.

    Note To view the individual streams, use the Player 0, (next stream) and Shift + 0 (previous stream) to cycle to the next and previous streams produced by the Player target. You can also view a stream by swiping through the Player south gate, opening the Streams tab and selecting the stream you want to view from the Stream value editor.

Topics in this section

Please send us your comment about this page

Creative Commons License Except where otherwise noted, this work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License