Evolution of a scene represented in a video sequence of input frames is analyzed. Output pixels of an output frame having a time position intermediate between time positions of the input frames are computed by combining respective input pixels of the input frames. At least three interpolation modes are provided for computing the output pixels, including (i) a first mode in which the combined input pixels for an output pixel are selected based on a position of the output pixel in the output frame and a default interpolation vector, (ii) a second mode in which the combined input pixels are selected based on the output pixel position and at least one first interpolation vector determined for the output pixel when analyzing scene evolution, and (iii) a third mode in which the combined input pixels are selected based on the output pixel position and at least one second interpolation vector that is intermediate between the default interpolation vector and a respective first interpolation vector determined for the output pixel when analyzing scene evolution.