GStreamer Dynamic Parameter Control

GstARGBControlBinding — attachment for control sources to argb properties
GstDirectControlBinding — direct attachment for control sources
GstProxyControlBinding — attachment for forwarding control sources
GstTimedValueControlSource — timed value control source base class
GstInterpolationControlSource — interpolation control source
GstLFOControlSource — LFO control source
GstTriggerControlSource — trigger control source

libgstcontroller-1.0.so provides functionality to animate element properties over time.