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Long Winter Studios · Premium Maya Tool

KEYPRO Timeline

Maya's timeline, rebuilt from the ground up. Four data layers, production-grade key management, and an animator toolbox that actually understands how rigs work. One price. Yours forever.

Buy KeyPro — $49 Explore Features
4
Data Layers
8
Animator Tools
2020+
Maya Support
$49
One-Time
Live timeline preview
KP TIMELINE RANGE SYNC ●
10 20 30 40 50 60 70 80 90 100 110 120 43 – 51 1 130

Four Layers. One Strip.

See More.
Know More.

KeyPro stacks four independently-rendered data layers onto a single compact strip beneath Maya's native timeline. Every layer updates live as you work — no dialogs, no flipping panels.

〜
Audio Waveform
Cached RMS waveform rendered per-pixel at any zoom level. Reads Maya's audio node automatically on scene load. Frame your sync work without leaving the timeline.
▌
Key Density
Every keyframe on every selected node rendered as a tick, color-coded by density across a three-stop ramp: blue → orange → hot pink. Spot heavy frames at a glance.
━
Heat Bar
A 2px chromatic bar at the top of the strip encodes your current view span relative to the master range. Red means you're zoomed deep in. Blue means you're at full master scale.
⊡
Master Range
A persistent master range lives alongside your scene file as JSON. Cyan markers show start and end. Handles can extend the range for ease-in/out frames. Double-click to snap back anytime.

Built-in Animator Toolbox

Rigs Know
What You Mean.

KeyPro ships a full animator toolbox above the strip — tween presets, stepped keys, and eight specialized tools that understand constraint chains, space switching, and rig conventions.

↔
Align
Match position, rotation, or scale between nodes in one click.
⊕
Fake Constrain
Bake a temporary parent constraint relationship without modifying the rig graph.
⟳
Space Switch
Switch rig spaces with compensated key baking across the active range.
✥
Micro Transform
Fine-tune transforms with keyboard nudge across multiple selected controls.
⧖
Mirror
Bilateral key mirroring with configurable axis and offset compensation.
⊞
Select Sets
Named selection sets as a compact bar above the strip. One click to reselect any group.
⤢
Transform All
Apply the same transform delta to every selected control simultaneously.
⊙
Temp Custom Pivot
Define a temporary pivot anywhere in world space for a group of controls.
≈
Inbetweener
Ctrl+right-click any frame to get a floating slider blending between adjacent keys.

Interaction Model

Muscle Memory
Included.

Every interaction is designed to feel like it was always there. Left-drag scrubs. Scroll zooms. Middle-drag moves keys. You'll forget it wasn't Maya's native timeline.

Left Drag
Scrub timeline to any frame
Scroll
Zoom view range centered on cursor
Alt+Drag
Pan view range left / right
Shift+Drag
Draw a frame selection range
Mid Drag
Move keys at hovered frame (or in selection)
Dbl Click
Reset zoom, apply master range
Ctrl+Dbl Click
Zoom to clicked frame ± 10
Ctrl+Right
Open floating inbetweener at frame
Del
Delete keys in selected range
Space
Play / Stop (optional spacebar override)

Technical Specs

Production Grade.
Zero Compromise.

Spec Detail
Maya Compatibility Maya 2020 – 2025+ (PySide2 & PySide6 — auto-detected)
Integration Method workspaceControl — docks natively below Maya's timeline
API Layer Maya OpenMaya / OpenMayaAnim (MFnAnimCurve for live key drag)
Audio Analysis Fully cached RMS waveform — per-pixel resolution at any zoom
Undo Safety All key operations wrapped in named undo chunks ✓
Master Range JSON persisted alongside .ma / .mb scene file
Auto Frame Graph Editor zoom tracks strip view on SelectionChanged + view pan
Jump to Key Timeline follows Graph Editor selection (aTools-style behavior)
Installation Drag-and-drop installer · token license tied to your purchase
Design System Consistent with full AXE Suite (Bebas Neue · DM Mono · orange/cyan/green)

One-Time Purchase · No Subscription

Buy it once.
Keep it forever.

KeyPro is Long Winter's flagship standalone tool. $49 gets you a permanent license, drag-and-drop install, and every update to v1. Works on Maya 2020 through 2025+ — PySide2 and PySide6 both supported, auto-detected at launch.

✓ Permanent license — not a subscription
✓ Maya 2020 – 2025+ · PySide2 & PySide6
✓ Drag-and-drop installer · token licensing
✓ All v1 updates included
KeyPro Timeline
$49
One-time · no renewal
Buy KeyPro →
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