I'm trying to get the Curve Flow particles to look like "Particles on Motion Path" video, but I'm having problems.

Lifespan is not being directly applied to the particle. The lifespan of the particle's color is being controlled by the length of the curve. What gives!?


Hand keyed is not ideal.
I'm trying to replace this, particles on a motion path, hand keyed timing
Particles on Motion Path - YouTube

I'm trying to get the Curve Flow particles to look like "Particles on Motion Path" video, but I'm having problems.
Curve Flow with Volume Particle - YouTube