Problem
Time-remapped footage develops uneven motion because keyframes were created at inconsistent interpolation modes.
Solution
Root Cause / Diagnostic:
Applying speed ramps or time-remapping using mixed keyframe interpolation modes (e.g., linear keyframes combined with bezier curves) produces jerky, unnatural speed fluctuations. When the acceleration curve lacks continuous tangent smoothing, playback stutters at keyframe inflection points, causing dropped or repeated frame artifacts. This uneven velocity curve distracts viewers and diminishes perceived production quality.
Actionable Fix:
1. Open the speed/time-remapping graph in the effect controls panel and convert all speed keyframes to Continuous Bezier or Auto-Ease curves.
2. Smooth out the acceleration handles to ensure a gradual, parabolic velocity transition between standard 100% speed and slow-motion segments.
3. Enable 'Optical Flow' or AI frame interpolation in the clip time-remapping properties to synthesize intermediate frames and eliminate stutter.
Pro Tip:
Capture high-frame-rate footage at integer multiples of your project frame rate (e.g., 60 fps or 120 fps for a 24 fps project) to ensure mathematically perfect frame sampling during retiming.
Applying speed ramps or time-remapping using mixed keyframe interpolation modes (e.g., linear keyframes combined with bezier curves) produces jerky, unnatural speed fluctuations. When the acceleration curve lacks continuous tangent smoothing, playback stutters at keyframe inflection points, causing dropped or repeated frame artifacts. This uneven velocity curve distracts viewers and diminishes perceived production quality.
Actionable Fix:
1. Open the speed/time-remapping graph in the effect controls panel and convert all speed keyframes to Continuous Bezier or Auto-Ease curves.
2. Smooth out the acceleration handles to ensure a gradual, parabolic velocity transition between standard 100% speed and slow-motion segments.
3. Enable 'Optical Flow' or AI frame interpolation in the clip time-remapping properties to synthesize intermediate frames and eliminate stutter.
Pro Tip:
Capture high-frame-rate footage at integer multiples of your project frame rate (e.g., 60 fps or 120 fps for a 24 fps project) to ensure mathematically perfect frame sampling during retiming.