9.9 KiB
Keyframed Nodes For ComfyUI
ComfyUI nodes to facilitate parameter/prompt keyframing using comfyui nodes for defining and manipulating parameter curves. Essentially provides a ComfyUI interface to the keyframed library.
Related project: https://github.com/FizzleDorf/ComfyUI_FizzNodes
Overview
Philosophy
- 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.
Interleaving Multiple Prompts Simultaneously (aka Prompt Entanglement, aka Prompt Superposition)
Which is the node equivalent for achieving this type of thing
For documentation detailing how this workflow works, see the Nodes > Entangled Curves section below.
AnimateDiff Prompt Superposition - Complex Workflow
Workflow output: https://twitter.com/DigThatData/status/1733416414864957484
- 8x Prompt superposition
- Second pass of AnimateDiff with denoise reduced to serve as a "refinement pass"
- FiLM Video Frame Interpolation (VFI) modified to interpolate looping videos correctly
- ESRGAN 2x Upscaling
Simple Curved Parameter
Multi-Prompt Transition With Manually Specified Curves
If you're feeling adventurous, this workflow demonstrates how you would use the curve objects directly to acheive the same thing as a schedule. Each prompt gets its own seaparate curve indicating the weight of the prompt at that time (you probably want the various conditionings weights to sum to 1 when combined. If you need to "fill" missing conditioning weight, try using an empty prompt).
Parameter Groups and Curve Drawing Utilities
Parameter Groups can be used to carry around multiple curves around. If you want to attach a curve to a parameter group, it will need a label.
We provide utilities for drawing curves. You can draw multiple curves simultaneously by collecting them in a parameter group. The labels you give the curves will also be used as labels for plotting. You can also plot labels you haven't curves (a label was randomly generated when the curve was initialized).
Nodes
Curve Constructors
Curve From String
Supports commonly used notation for curved parameter. See also Deforum, FizzNodes, https://www.chigozie.co.uk/keyframe-string-generator/
Curve From YAML
Supports curved parameter notation used by https://github.com/dmarx/keyframed
Constant-Valued Curve
Returns a curve which evaluates to the same value for all values of t (time). Especially useful for curve arithmetic.
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
Generates a batch of n conditionings multiplying each conditioning by th value of the curve at that conditioning's index within the batch. If a batch of latents is provided, n is ignored and the size of the latent batch is used. If the provided conditioning object has batch size > 1, the conditioning's batch size takes priority over the latent batch size and n.
Add Conditions
If you're using the x10 node, at least curve_0 must be non-empty. The other cond positions are all optionally populated.
Curve Arithmetic Operators
Arithmetic is performed at the union of keyframes of the provided curves.
NB: the division operator is unreliable at the time of this writing (2023-12-09).
If you have lots of curve objects to multiply together or add together, here are some convenience nodes.
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.timenext-Y.timelinear- 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.
Set Keyframe
Attaches a keyframe to a schedule. If you haven't created a schedule yet, pass your keyframe into this node to create one, then pass the output schedule to subsequent Set Keyframe nodes to attach additional keyframes to the schedule. The first keyframe in the schedule should always be at time=0.
Evaluate Schedule
Evaluate the schedule at a time or time slice to extract a single conditioning or conditioning batch (respectively) to provide to e.g. a KSampler. The non-batch version gives the same kind of conditioning you'd get from a CLIPTextConditioning node. The intention of the batch version is to use with AnimateDiff to apply different conditionings per frame.