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effectcraft/docs/effects-parity.md
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vangel76andClaude Opus 5.5 4c65271c72 Timewarp: retime the layer's source without the effects above it, as After Effects
After Effects' Timewarp reads the layer's source (with its masks) at the
retimed times and ignores the effects applied before it: a red solid with a
Gradient Ramp and then Timewarp (Speed 25) renders as the red solid in AE
2026 (EXPORTER e2 read-back). EffectCraft retimed the layer with its
effects (mean difference 127.5/255 over the comp), now identical (0, CPU and
GPU). Echo, Posterize Time and the other time effects keep reading the
effects before them, as measured before.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-19 16:47:38 +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 No effect is compared with an After Effects render yet. 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 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 —
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 Timewarp retimes the layer's source and masks without the effects above it, as After Effects 2026; #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 Timewarp ignores the effects above it (source and masks only), measured against After Effects 2026
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