Compositing
From PiTiViWiKi
The compositing interface hasn't been designed yet. Feel free to put your thoughts in the section below:
Basic compositing will be provided directly in the timeline. Sources will provide a controllable alpha property you can manipulate with an interpolation curve. More advanced forms of compositing, such as chroma key, will be implemented with effect objects which can be placed within the time-line. These parameters will be adjustable through through the property editor.
Things to consider in the design:
- type of blending to use, how to set thresholds, choose colors. Do we allow these properties to vary over time? Perhaps a bad lighting situation will require some tweaking of the threshold or key color at different time stamps.
- matting: using another source to supply an alpha channel.
- motion transforms: provided here? or as a separate effect?
