Treat curves/schedules and keyframes as objects that can be passed around, plugged and unplugged, interchanged, and manipulated atomically.
Leverage nodes to facilitate modularity and flexibility.
Facilitate fast iteration
Provide convenience functions for most common use cases, and also low-leverl operators capable of reproducing the behavior of those convenience functions to permit user customization in "node space".

Starter Workflows

Prompt Scheduling

This one is probably why you are here. This workflow demonstrates how to use the keyframed/schedule nodes to achieve similar behavior as FizzNodes' PromptSchedule node, but implemented differently.

This schedule is essentailly a normal AnimateDiff workflow where several nodes have replaced the normal conditioning setup. Rather than a single CLIP Text Encode node, we can have multiple prompts which transition sequentially over time. For documentation detailing how this workflow works, see the Nodes > Scheduling section below.

Prompt Interleaving (aka Prompt Entanglement, aka Prompt Superposition)

Which is the node equivalent for achieving this type of thing

Simple Curved Parameter

Multi-Prompt Transition With Manually Specified Curves

Nodes

Curve Constructors

Curve From String

Curve From YAML

Constant-Valued Curve

Entangled Curves

Each output curve of the node is a sine wave that oscillates from 0 to 1 at the given frequency or wavelength. The outputs of a given node are phase-offset such that at any given time, the sum of the generated curves is 1.

Reference the Prompt Interleaving Workflow for a demonstrative example.

Curve Operators

Evaluate Curve At T

Apply Curve To Conditioning

Add Conditions

Curve Arithmetic Operators

NB: the division operator is unreliable at the time of this writing (2023-12-09).

Scheduling

These nodes work together to facilitate transitioning through a sequence of conditionings (i.e. prompts). We'll call this sequence the "schedule" of the conditionings. The primary use case here is for manipulating the positive prompt, i.e. for building a "prompt schedule". Given a particular time (e.g. frame id) in an animation seuquence, we can query the prompt schedule at that time to get the appropriate conditioning to pass to the KSampler.

Reference the Prompt Scheduling Workflow for a demonstrative example

Keyframed Condition

This node attaches a conditioning to a keyframe. This let's us assign a time to the conditioning and set what interpolation method to use when we're between keyframes.

Interpolation Methods

Consider three time points a,b,c such that a<b<c, and two keyframes X,Y such that X.time = a and Y.time = c. To interpolate a value at time b, we would use X.interpolation_method to "tween" the value between X.value and Y.value.

null - If the interpolation value is not set, the default interpolation is "previous".
previous - X.time
next - Y.time
linear - normal linear lerp. Matches the behavior of Deforum and FizzNodes.
sine_wave - sine function easing. slower close to terminal values, fastest at the middle of the transition.
`eased_lerp - sin2 easing. similar to sine but starts and ends slower and the fastest part is faster.
exp_decay - starts fast ends slow.

README.md

ComfyUI-Keyframed

Overview