![]() ![]() Optical Flow interpolation is ideal for modifying the speed of clips that contain objects with no motion blur, which are moving in front of a mostly static background that highly contrasts with the object in motion. Choose Render In to Out or hit Enter to do that To see the optical flow effect, render your sequence. For low quality or draft rendering, the faster Frame Sample interpolation is used even while the Optical Flow is enabled. Since the optical flow library cannot sustain real-time playback, as it happens with the existing Frame Blend function, Premiere Pro uses the time-consuming Optical Flow only for Time Remapping for high quality renders. The Optical Flow option in the Time Interpolation menu ( Clip > Video Options > Time Interpolation > Optical Flow) allows you to interpolate missing frames for time remapping and produce better looking and smoother slow motion from conventionally shot footage. The Optical Flow feature in Premiere Pro uses frame analyses and pixel motion estimation to create brand new video frames, resulting in smoother speed changes, time-remapping, and frame-rate conversion.
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