E306 - image_sequence timing constraint violated

Cause

One of the timing constraints on image_sequence is violated: frame_distance must be > 0; hold_fraction must be in [0, 1) (so the crossfade frame_distance * (1 - hold_fraction) stays positive); fade_in and fade_out must be >= 0.

Example

{ image_sequence: ["a.png", "b.png"], frame_distance: 400, hold_fraction: 1 }
// hold_fraction = 1 leaves no room to crossfade

How to fix

Set frame_distance > 0, 0 <= hold_fraction < 1, and fade_in, fade_out >= 0. hold_fraction defaults to 0.2, so it can be omitted.