ffmpeg-speed-time

To speed up or slow down video using FFmpeg, you adjust the presentation timestamp (setpts) for the video stream and scale audio tempo accordingly. This generates FFmpeg commands that apply constant speed changes while preserving audio-video synchronization and pitch.

Smooth slow-motion in FFmpeg requires time remapping with setpts combined with motion interpolation using the minterpolate filter. This generates command sequences that synthesize intermediate frames, preventing choppy playback during slow-motion segments.

Yes, you can freeze frames at the start, end, or mid-clip in FFmpeg using the tpad and loop filters. This allows frame-accurate freezing and frame looping for creative effects by holding a specific presentation timestamp.

FFmpeg supports reverse playback by applying the reverse filter to the video stream. This Skill automates the generation of reverse playback commands, ensuring deterministic timing adjustments across clips of varying lengths.

Applying different speeds to specific segments in FFmpeg involves ramp-based segment shaping with setpts and minterpolate. This automates time remapping across clip segments, enabling variable speed adjustments within a single command sequence.

Choppy slow-motion in FFmpeg occurs when frames are simply duplicated without motion blending. Applying the minterpolate filter generates interpolated frames, creating smooth slow-motion playback during time remapping.