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Motion blur and Follow track constrain
Closed, ResolvedPublic


System Information
Linux min 17.1 64-bit
i7 X980
Blender Version
Broken: 2.75a c27589e

Short description of error
Motion Blur doesn't work correct with an object linked to an empty with a Follow track-constraint

Exact steps for others to reproduce the error

  1. Load footage into movie clip editor and track a feature a couple of frames. Preferably a fast moving one.
  2. Press the "Link empty to track".
  3. In the 3d view create any geometry and parent it to the newly created empty/track
  4. Turn on the motion blur and render.
  5. save render
  6. Collapse the Follow Track-constrain to a F-curve
  7. Render again and compare the two renders. See image{F205178}

The object rendered with the Follow Track-constraint (nr 1 in the image) is incorrect

Event Timeline

arild andersson (konke) raised the priority of this task from to Needs Triage by Developer.
arild andersson (konke) updated the task description. (Show Details)
arild andersson (konke) set Type to Bug.
Bastien Montagne (mont29) lowered the priority of this task from Needs Triage by Developer to Needs Information from User.Jul 10 2015, 9:31 PM

@arild andersson (konke) are you using Cycles or internal renderer (or does the issue happen with both)? Also, please always attach a .blend file (with very short video in this case) to demonstrate the issue, really helps to quickly checks the issue…

Sergey, think this one is in your area(s).