With Time Stretch Curves you can specify play-rate adjustments using an Animation Curve during animation playback. A Time Stretch Curves will only be referenced during playback when the montage has a non-default play rate. In this property you can define the following properties. Sampling Rate: Desired Sampling rate of the above curve. This will be rounded off so we sample the whole curve with a fixed time step. Curve Value Min Precision: Minimum delta allowed between consecutive sampled segments. Below this value, segments will be combined to optimize the number of markers. Markers: Lists an optimized array of markers.