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Motion blur and Follow track constrain
Closed, ResolvedPublic

Description

System Information
Linux min 17.1 64-bit
i7 X980
12gb
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) set Type to Bug.
arild andersson (konke) created this task.
arild andersson (konke) raised the priority of this task from to Needs Triage by Developer.
Bastien Montagne (mont29) triaged this task as Needs Information from User priority.

@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).