att. img is one way using interlaced 3d display (active visor), in case they decide that red/blue or red/green (passive visor) is not gonna provide them with a good profit margin. I've never actually seen a 3d tv, but red/blue or red/green is 1950s tech.  psd file from cs4e.  there was a workflow tutorial on this, but it disappeared from their help site.  if editing vid clips in csxe, limit it to 500 frames at a time to avoid going gaga.