many come with vegas. just use the fx & motion blur settings built in.

manual page 160 & search the help file. There's 3 blur FX: quick blur, linear blur & gaussian blur. There a glow FX. There's a light rays FX. should be more then enough for what you want.

I'm not talking about those kinds of blurs. Those are static. I want a blur with a glow that trails the movement of text or some other graphic with alpha channel over the main video track.

that's what motion blur does. It creates a trail. post an example of what you're looking for.

EDIT: you can do similar (perhaps what you want) with a few layers of video & blur/glow. There's no magic button in vegas to do it, you'll have to do it yourself. like you said, you could buy a program to do all the work & if you do a LOT of it then that might be a better idea.

EDIT: not sure what you mean by "static". You can keyframe the settings & use the FX multiple times on a single event.

Good grief!

Motion Blur is NOT glow, is not Gaussian Blur etc.

Motion Blur in Vegas is on the Video Buss Track. If it's not already visible turn on the Video Buss Master. Then add the Motion Blur envelope. Adjust the envelope to create the desired number of FRAMES of MB.

If you're genrating the media and motion in Vegas you can also use Supersampling to get smoother MB.

Even then it's a bit of a kludge, pretty much the same as how almost all apps do MB. It's not optically correct. I've you want the real deal like the MB the shutter in a camera creates then you need AE and expensive plugins.

Bob.