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thanks for the replys guys! ronnypandit13, I tried those exact settings by rendering out about 6 frames but got the same exact flickering. I rendered out those 6 frames to a quicktime animation just like I rendered out my other video with the flickeringhttp://www.youtube.com/watch?v=Z7hvg6Yjydc but for some reason you tube displays no video with this message Failed (unable to convert video file) I'm thinking because its only 6 frames. I was reading Francesco Legrenzi - VRay The Complete Guide and found this: Check sample visibility - this is a parameter used during rendering. When it is active, only samples which are directly mutually visible to each other are used by V Ray for interpolation. It is a very useful parameter to avoidproblems caused by the interpolation of samples which are near each other but divided by a small surface such as a thin structure. I do have exactly that: samples which are near each other but divided by a small surface such as a thin structure...so Im gonna try this next. I am precalcing the light cache right now for fly through and I might as well precalc the irradiance map right now too! Alyosha, you're right about precalcing IM and LC but from what I've read about animation prepass and animation render I thought I was guaranteed to not get any flickering.I'll just precalc them both now. I also learned my lesson precalcing light cache with world scale in outside environments. I think they actually advise against it on a tutorial on spot 3d. However cant you just uncheck Render to memory buffer under V-Ray Frame Buffer to remedy this problem of running out of memory with world scale since it will render directly to hard drive with no window displaying the samples being built?

thanks, i'll try it right now

Could someone tell me why the fine lines in this video flickers. I think its the AA but I've tried everything...well almost. I recently tried Detail Enhancement and that didnt work. Here are my settings Adaptive DMC AREA 1.5 Reinhard Subpixel Mapping checked Affect Background checked Adaptive Image Sampler: Min 1 Max100 Clr thresh .005 Use DMC sampler thresh unchecked Animation prepass then Animation render with Irradiance Map and Light cache following the directions here http://www.spot3d.com/vray/help/150SP1/tutorials_anim2.htm Irradiance map: min -3 max 0 Hsph subdivs 50 Interp samples 20 Clr thresh .2 Nrm thresh .2 Dist Thresh .9 Use camera path checked Light cache: subdivs: 2000 Sample size .02 Scale: screen (I tried world but I kept running out of ram) Filter: Nearest use camera path checked Interp Samples: 5 DMC Sampler: Adaptive amount .85 Noise Threshold: .001 Min Samples 20 Global subdivs multiplier 1.0 video here: