- Posts: 228
- Joined: Sat Aug 24, 2019 8:31 am
- Real Name: Daz Harris
Trails is more or less a simulation and needs a previous frame (try scrubbing through it that's impossible without caching)
The best way would be to export motion vectors from blender and use those in combination with the vector motion blur tool.
A motion vector pass is essentially an image telling Fusion what velocity each pixel has in x and y axis.
If you can't rerender you could theoretically use the optical flow tool to guesstimate motion vectors in Fusion.