even if fusion has a great caching system i like to have my previews opened in DJV. for this i wrote this script.
it works similar to the "create preview on ..." feature in fusion. if you use it on a loader/saver it will just open the image sequence directly, on every other tool it will create a temporary saver and renders, after that the temporary renders are opend in DJV.
i also tried to mimic a kind of proxy render, so you can render lower resolutions as preview.
to use it place the script into the ../scripts/tools folder and edit lines 37&38 to your prefered preview format and alter the path to your DJV folder
comments and feedback are always welcome
p.s.: you can easily alter the script to use it with any other framebuffer application you have (e.g. framecycler)