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Time Remap

Time Remap · screenshot coming soon

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What this node does

Time Remap changes the timing of a single COMFYTV_VIDEO, not just its constant speed. In speed mode you author speed keyframes (speed multiplier over output time) so the clip can ramp between slow motion and fast motion. In hold mode it freezes on a chosen frame, optionally advancing by a small increment each output frame for a stutter/step effect. It runs on ▶ Run. Input and output are COMFYTV_VIDEO. In speed mode the node errors if no speed keyframes are set — for a plain constant speed, use Video Speed instead. To hand the result to a native ComfyUI node, insert a Bridge (ComfyTV/Bridge). See https://github.com/jtydhr88/ComfyTV/blob/main/docs/bridges.md.

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When to use it

  • Speed-ramp a shot: ease into slow motion, then whip back to full speed.
  • Hold a freeze-frame on a key moment.
  • Create a stepped / stutter look by holding with a small increment.

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Parameters

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mode

speed (variable-speed retime from keyframes) or hold (freeze on a frame). Default speed.

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speed_keys

speed mode only. JSON array [{t (output s), v (speed ×), interp}] — the speed multiplier over output time. Authored via the node’s curve UI. Required in speed mode.

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smooth_fps

speed mode only. Integer 0–120, default 0. 0 = off; a value above 0 pre-interpolates the source to that fps before retiming, for smoother slow motion (slower to render).

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hold_frame

hold mode only. Integer 0–100000, default 0. The source frame index to freeze on.

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hold_increment

hold mode only. Integer 0–1000, default 0. How many source frames to advance per output frame; 0 is a true freeze, small values give a stepped/stutter motion.

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video (input, optional)

The COMFYTV_VIDEO to retime. Required.

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Outputs

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Tips

  • For a single fixed speed (e.g. always 2×), reach for Video Speed — Time Remap is specifically for varying speed and will error without keyframes.
  • smooth_fps helps very slow ramps look fluid, but it interpolates the source first and is noticeably slower; leave it at 0 unless you see judder.
  • Sequence — assemble retimed clips into an edit.
  • Video Transition / Luma Wipe — blend between two clips over time.