AE插件：透明通道抠像套装（附教程）Aescripts EFX Keying Alpha
套装一共17个抠像插件，适用于WIN版 AE 软件，
This suite of plugins consists of many tools developed over many years of compositing when off-the-shelf effects in After Effects would not provide satisfactory results. Some of them solve small problems, like softening an edge of a matte, others evolved into full blown keying solutions.
◾combine alpha mattes of different layers with one simple effect,
◾clean an alpha from small speckles left after keying noisy footage or difference matte,
◾feather a matte edge “outwards” – you don’t lose thin details,
◾remove a dark edge after keying – this happens when the camera had sharpening turned on,
◾tell the despiller which pixels he should despill and which to leave alone,
◾difficult spill case? Just select the pixels with spill on them and use any of the normal AE effects to remove it,
◾select pixels based on their color, luminosity or even transparency.
◾Color Select HSL
◾Edge Blur Keyer
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