Having identifical start and end keyframed settings doesn't do the trick? If not, I imagine you could render the clip to a new track, then make a reversed copy (velocity envelope) butted up against it. If you like, you could then render those two down to a single event that ought to loop perfectly ... can't say if it will have the look you're after, though.
Well, that does work, but if I do that, there's always a very visible point where the texture "changes direction". I tried blending it with its "reverse texture", but there's always a noticeable shift that looks bad. I guess it's in the nature of the algorithms used to generate the textures... too bad though, it would be nice to be able to create smooth loops....
Have you tried using two noise textures and fading one into the other. May help the look, depends on what you want. (I don't have Vegas 4 yet but have played with the demo).
1. Make your clip the way you desire.
2. Render the clip
3. Split the clip in half
4. Put the second half first dissolving into the first half
5. Render again.
Yes, that does kind of work... the cross-fade part "looks different" than the rest of the moving texture, so it's a bit distracting, but if it's gradual enough, it looks pretty decent.
thanks!
of course you can do that with any video footage, not just noise textures... I've made some pretty sick things that way, but after staring at them for a while I started to feel literally sick... so make sure you test it out on people before making it a DVD menu background or something ;)