Why the flickering in Ambient Occlusion?

[Anonymous]

Why do I get flickering in the shadows with Ambient Occlusion?

See this video: http://youtu.be/wgPNc66C6bQ

Watch the big machine. It's an Href Scene. Does it has anything to do with that?

[grue1970 · Accepted solution]

you have max 2014?  i'd play with the render sample settings next.  2014 defaults to 1 sample per pixel min and 128 max.  you could change that to 4 min or 16 minimum to 128 max.  also you could try another sample type - such as Box (softer) or Mitchelle rather than the default Gauss.

You might be able to reduce the AO sample settings from 80 to 64 then?

oh and finally, i don't do this much anymore but you could render a larger overall frame size, say 2x and then resample the video down in size.  for examplel so if you're doing 640x480 now, you could try everything the way you have it set now except double the output size.  that increases the size of small details so you get better sampling.

i thought i heard someone say that checking the box "lock samples" helps too.  and sometimes Jitter being off helps.

[Anonymous]

Thanks for your reply!

Increasing the output size x2 did some magic to the details, but adjusting the sample quality to min 4 and max 64 did the trick!

[grue1970]

awesome!