When rendering my scene as an animation, on particular frames (in this instance, 17), I often get a delay in the outlining, like it's trying to outline the next/previous frame.

This doesn't happen when rendering the frame normally - as in not an animation.

It looks like this:
When animated

enter image description here

When rendered normally

enter image description here

It's like the actual render is delayed by a frame, but only when animated.
Is this a known bug?

  • 1
    $\begingroup$ Sounds like a bug, probably should be reported in the tracker if the issue still happens with the most recent builds $\endgroup$ Jun 19, 2016 at 18:41
  • $\begingroup$ So........ bug? $\endgroup$
    – Matt
    Jun 21, 2016 at 21:50
  • $\begingroup$ I have had this freestyle "delay" happen when rendering with Motion Blur settings turned on. Is this the case for your project? $\endgroup$
    – user2511
    Oct 3, 2016 at 19:23
  • 1
    $\begingroup$ Motion blur was part of the issue, I think $\endgroup$ Oct 5, 2016 at 22:07
  • $\begingroup$ Similar question: blender.stackexchange.com/q/29266/28015 $\endgroup$
    – JakeD
    Jun 10, 2017 at 18:58

1 Answer 1


I found using cycles and freestyle so slow (like minutes) that its easier to clone the project file, then replace all the cycle materials for a simple diffuse transparent BI material and run it with BI. Then composite the frames with the other rendered frames. Of course, I have thousands of polys so it may not help if the model is low poly.

  • $\begingroup$ Can you please elaborate on your solution? You render only the freestyle part in BI (on a separate render layer?) then composite these frames with the one coming from cycles (without freestyle)? $\endgroup$ Jan 4, 2017 at 22:59
  • 1
    $\begingroup$ Sort of. I render the blender freestyle with transparent background as .png, then the cycles render completely independent and composite them in After Effects. I'm sure you can use Blender to composite them post (I wouldn't know how to tell you where to begin, and I don't think you can render BI, and Cycles simultaneously) $\endgroup$
    – kraken
    Jan 7, 2017 at 20:13
  • 1
    $\begingroup$ You can immedeatly combine Internal and Cycles (with compositing). urchn.org/post/… $\endgroup$
    – Leander
    Jan 11, 2017 at 10:01

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