aleleba/effectcraft
1
0
Fork 0
mirror of https://github.com/storytold/effectcraft.git synced 2026-10-24 10:09:32 -06:00
Code Issues Packages Projects Releases Wiki Activity

Luma Key: Key Out Brighter and Darker cut hard at Threshold, as After Effects

Browse Source 
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>
This commit is contained in:
vangel76
2026-10-19 16:15:02 +02:00
co-authored by Claude Opus 5.5
parent dc9f15ada1
commit 39bd0efac2
3 changed files with 65 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files
docs/effects-parity.md
+2 -1
View File
@@ -38,7 +38,7 @@ corpus compares renders, each effect is assumed to differ somewhere, and users k
| 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 | — |
| 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](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) |
@@ -68,6 +68,7 @@ the GPU is performance, not parity.
| 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 |