What's the best way to do this particle effect?

[EDV]

I've looked at other particle animation FX and this is exactly what I'm looking for:

what plug-In is recommended (if any) ?

(don't you love it when people post some nice effect on youtube without saying how it's done)

 

[Hawk Teflon]

Particle world or Particle playground could both do it.

Keyframe the emitter to go from left to right.

Change particles to lens bubble (convex or concave ... depending on preference), or sphere

Change gravity to a negative number.

Birth / death rate constant number, with 25% variation or so.

That should do it.

 

[robster180]

If you can afford it Trapcode Particular is an incredibly powerful particle generator

 

[handsome pete]

Particular is awesome, though for the simple effect in his example it's not worth the money when you can just use the included part