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vangel76andClaude Opus 5.5 39bd0efac2 Luma Key: Key Out Brighter and Darker cut hard at Threshold, as After Effects

After Effects' Luma Key removes everything darker (or brighter) than Threshold
and ignores Tolerance for those two key types; Tolerance only sets the band of
Key Out Similar / Dissimilar. EffectCraft ramped the matte over Tolerance, so
case 719 (a 50 % grey, Key Out Darker, Threshold 140, Tolerance 20) kept about
80 % of the layer where AE keys it out completely.

Measured in AE 2026 on a vertical grey ramp (cases 812-814): Darker keys up to
level 139.9 and keeps 140.1 (EffectCraft now the same row); Similar keys levels
120.3-160.0; with Edge Thin 1 / Edge Feather 2.5 the matte rises over rows
591-596 (EffectCraft within 0.2 of AE's alpha there). CPU and GPU.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-19 16:15:02 +02:00

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Effects parity

Last reviewed: 2026-10-12 · Last updated: 2026-10-12 · Change: minor (effect colour labels; earlier change: parameter count and closed issue references re-audited against upstream/main 470ea7a3 and the generated effects.md) · Target: Adobe After Effects 2026

Effects are the deepest single area of After Effects. This page separates the four questions that a single "306 of 306" hides: does each effect exist, does it run fast, does it look like After Effects', and does the preset library exist. The per-effect catalogue is the generated effects.md; the overall numbers are in target-app-parity.md.

Summary

Question	Value	Kind
Effects present	306 registered, 3,017 parameters; all of After Effects' effects by name (298 at the M9.11 count) plus Obsolete and our own	Measured: registry, effects.md. After Effects 26.5's `Plug-ins/Effects` holds 306 `.plugin` bundles in 231 entries (one bundle can hold several effects, so this is a cross-check, not a match)
Parameter names, order, popups, units, defaults	aligned in M9.12	Agent-checked against After Effects' documentation, not against a live dump
On the GPU	280 (92%)	Measured: registry flags; GPU vs CPU agreement tested per effect
32-bit float, no clamping	306	Measured: registry flags
Rendered output matches After Effects	unmeasured	Only Tint is checked against After Effects renders (four solids, within 1/255). `effectcraft_effects::fidelity::compare_frames` exists for the corpus (fidelity/README.md); simulation effects are pinned by golden hashes of our own output (M13.27)
Animation presets	54 original presets (8 text-animator, 23 Transitions, 23 Backgrounds) against After Effects' 621 `.ffx` presets	Measured: `crates/engine/presets/text_animators.json`, `crates/engine/presets/transitions.json`, `crates/engine/presets/backgrounds.json`; the After Effects `Presets` folder
26.x additions	Curl Noise (26.3) present (#463 open); effect colour labels (26.5) present in Effect Controls only, not in the Timeline; the rebuilt Effect Controls (26.5) missing	Release notes

Breadth ≈ 85% (presets weigh in; the effects themselves are ≈ 100%). Ready ≈ 40%: until a corpus compares renders, each effect is assumed to differ somewhere, and users keep confirming it.

By category (from effects.md)

Category	Effects	On the GPU	Known differences or bugs
3D Channel	8	8	Cryptomatte selection can't be set in the UI and the GPU path is slow (#473; quoted names with commas fixed); multi-layer EXR decode shared (#474 open: f16 storage and cache sizing remain)
Audio	13	0	CPU by design (applied in the mixdown)
Blur & Sharpen	16	15	Gaussian Blur interaction and output to be measured first (fidelity/ae-2026-acceptance.md)
Channel	13	13	—
Color Correction	40	40	Tint, Tritone and Black & White (sliders and Tint) match After Effects 2026 renders (Rec. 601 luminance); Levels (Individual Controls) matches After Effects 2026 in 32 bpc (channel controls before RGB, "Off for 32 bpc Color" unclipped; plain Levels' channel order not measured); Brightness & Contrast (non-legacy) within about 6/255 of After Effects 2026 ramps (negative settings invert the positive curves); Tint has Swap Colors (#963); ACES 2.0 / OCIO 2.5 (26.5); Apply Color LUT (#514) and 32-bpc blending (#494) are closed
Distort	39	35	Liquify has no viewer brush; #303 (Mesh Warp drag) and #534 (CC Power Pin Unstretch) are closed
Expression Controls	9	9	—
Generate	26	25	Fractal on the CPU (needs f64); #526 (Reset) and #536 (Write-on marks) are closed
Immersive Video	12	12	—
Keying	12	12	Key Cleaner approximated; #533 (wire-removal Frame Offset) is closed
Matte	6	4	Mocha shape reads our documented JSON, not Mocha's format
Noise & Grain	13	12	Curl Noise (#463); Match Grain on the CPU
Obsolete	9	9	Luma Key matches After Effects 2026 on a grey ramp (hard cut, Tolerance only for Similar / Dissimilar)
Paint	1	0	Tablet pressure not read (hardware-parity.md)
Perspective	10	9	Chromatic Aberrations pan/tilt crash (#580)
Simulation	18	18	Particle Playground lacks Particle Exploder, text particles, ephemeral mapper; CC Particle World camera fixed (#397)
Stylize	25	25	Motion Tile output size (#369)
Text	2	2	—
Time	8	8	#535 (Pixel Motion Blur, Vector Detail) is closed
Transition	17	17	—
Utility	9	7	—

Third-party bundles in After Effects (Cineware, Mocha AE) are out of scope; Keylight is implemented under a generic name ("Key Light").

Estimate

≈ 70–130 h: a fidelity corpus case per effect at default and one non-default setting, compared with After Effects renders, and the fixes they turn up (40–80 h, most of it parallel, but every reference render needs After Effects on the owner's Mac); an original preset library covering After Effects' preset categories (Behaviors, Shapes, Synthetics, Text, Image effects remain; Backgrounds and Transitions exist) 15–35 h; the open effect bugs 10–20 h. Moving Fractal and the analysis effects to the GPU is performance, not parity.

Revision history

Date	Change	Summary
2026-10-19	minor	Tritone uses Rec. 601 luminance, measured against After Effects 2026 renders of a red solid and a grey ramp (CPU and GPU)
2026-10-19	minor	Black & White's Tint keeps the gray's luminosity (Color blend), measured against After Effects 2026 renders (CPU and GPU)
2026-10-19	minor	Levels: "Off for 32 bpc Color" no longer clips in 32 bpc projects, unclipped values extrapolate below Output Black; Levels (Individual Controls) applies the channel controls before the RGB ones, measured against After Effects 2026 (CPU and GPU)
2026-10-19	minor	Brightness & Contrast: negative Brightness / Contrast are the inverse curves of the positive ones (Brightness −40: 20/255 → 6/255 off After Effects 2026), CPU and GPU
2026-10-19	minor	Luma Key: Key Out Brighter / Darker cut hard at Threshold, measured against After Effects 2026 renders of a ramp (CPU and GPU)
2026-10-18	minor	Tint uses Rec. 601 luminance weights, measured against After Effects 2026 renders of red, green, blue and grey solids (CPU and GPU)
2026-10-18	minor	Exposure converts to linear light with a pure 2.2 power curve, as measured in After Effects (Offset 0.0005 / 0.002 / 0.02 / 0.1 on black: 8 / 15 / 43 / 90), not the piecewise sRGB curve; its sliders take After Effects' ranges (Exposure −100..100, slider −4..4; Offset −2..2, slider −0.5..0.5; Gamma Correction 0.1..10)
2026-10-12	minor	Parameters 3,014 to 3,017 (effects.md); #303, #514, #526, #533–#536 marked closed instead of pending
2026-10-12	minor	Effect colour labels (26.5) added in Effect Controls
2026-10-12	minor	Tint's Swap Colors button and agent-drivable command (#963); undo/redo, instance targeting, animated layer-time edits and invalid-input tests
2026-10-10	major	First effects parity checklist

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