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**Effect** | **Author** | **Filename** | **Transition type** | **Created** | **This version** |

S dissolve | jwrl | Sdissolve_Dx.fx | Standard dissolve | Mar. 25 2017 | Sept. 29 2020 |

| | Sdissolve_Ax.fx | Alpha dissolve | June 12 2018 | July 23 2020 |

| | Sdissolve_Adx.fx | Delta dissolve | Nov. 10 2018 | July 23 2020 |

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This is an "S" dissolve, and is essentially the same as the Lightworks dissolve, with either a trigonometric or a quadratic S curve applied to the "Amount" parameter. If you need to you can vary the linearity of the curve from -100% (inverse curvature) through 0% (linear) to 100% (full curvature). The midpoint curve setting will give you a linear transition just like a standard dissolve.

If you manually enter values for the curve outside the 0-100% range you can get even more extreme curves than those shown. You can even get midpoint inversion by typing in values greater than -100%, i.e., the effect will fade in then start to fade out, then fade in to completion.

Click on

Sdissolve_Dx or

Sdissolve_Ax, Sdissolve_Adx will show you what it does. You will find an explanation of how to use alpha transitions

in this post and delta transitions

in this one.

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