FJ, There is no comparison
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FJ,
There is no comparison between the two programs. Vegas Pro is a non-linear editing program that allows you to combine and manipulate video clips, photographs and audio into a completed product. AFX is not an NLE, but a compositing and motion graphics editing program with advanced capacity to create visual effects and complex motion graphic designs using video, photos, graphics and so on. It doesn’t have much capability to work with audio, and you really wouldn’t want it to. The stuff you’d make with AFX would go into your Vegas timeline to complete your project. When the day comes when you want to do advanced compositing or motion graphics beyond what Vegas is capable, then you’d utilize AFX to that work then bring it all back into Vegas to finish your film. The two programs do similar but vastly different things.