GStreamer 0.11 Library Reference Manual
GStreamer Dynamic Parameter Control
GstTimedValueControlSource
— timed value control source base class
GstInterpolationControlSource
— interpolation control source
GstLFOControlSource
— LFO control source
GstTriggerControlSource
— interpolation control source
libgstcontroller-0.11.so provides functionality to animate element properties over time.