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At the present time, iScreensaver Designer 5.2 provides support for macOS 10.13 High Sierra, but there are some functional limitations.

Please read the 10.13 High Sierra Tech Note as well as the Release Notes.

Due to changes made by Apple, iScreensaver Designer version 5.2 does not currently support macOS 10.14 Mojave.

Please read our forum post for the latest updates.

[Solved] Cross Dissolve for Media Loop

I am trying to add a dissolve effect to the media portion of the screensaver (that is forever in a loop) so that it is a smooth transition back to the beginning of the media, however, the only effect available is "cut"... Do i need to purchase iScreensaver for the Dissolve effect?


  • iScreensaver 4.5 supports cross-dissolves only for still images (JPEG, PNG, etc.) using it's OpenGL hardware accelerated engine.

    For other media types (QuickTime Movies, MPEG4 or Flash/SWF), "Cut" is the only option to transition between files.

    However, it is possible to use a third-party movie editor to build the dissolve effect into the movie itself, which is what we recommend.

    The next version of iScreensaver, under development, will have more options in this regard.
  • Thank you, that information is helpful
  • Please note that iScreensaver Designer 5 has been released and has a specific improvement allowing dissolves across Movies or Flash items.

    Please see for a list of new features in version 5.0.
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