I got a small video to mix turned over to me where the ambiences were all mono (this was a quickie and the FX were cut by the picture editor). It may be quicker for me to find some stereo FX to place in there, but I might as well ask:
Do you have any tricks to make these tracks into true stereo?
I tried a stereo reverb, delays, and duplicating/offsetting it.
Any other tricks you guys have up your sleeves?
EDIT: I guess it would help if I told you what type of FX were done: Wind, underwater, and a murmuring crowd (for 3 different scenes respectively)