• Adobe After Effects

  Change Frame Rate

  Posted by Jennifer Adams on January 13, 2013 at 1:08 pm

  Hi everyone!

  I’m trying to create a slow-motion sequence and am having a bit of trouble.
  I shot the sequence at 50FPS, in order to render it at 25FPS, and thereby create a smooth slow-motion. But what happens is that I import the footage, put it into a composition set at 25FPS, and then instead of the video being played twice as slow (i.e. lasting 20 seconds instead of 10), After Effects just renders it at the same speed but moving at 25FPS.

  Can anyone tell me what I’m supposed to do to achieve this?
  Thanks a lot!
  Jen

  Vishesh Arora replied 13 years, 4 months ago 3 Members · 2 Replies
• 2 Replies

• 

  Barend Onneweer

  January 13, 2013 at 1:16 pm

  Hi, this is the expected behaviour. Your footage plays back at the original framerate, regardless of the composition framerate.

  The most straightforward way to play back frame-for-frame is to re-interpret your material as 25fps.

  Rightclick the source footage in the project window and click ‘Interpret Footage’, then set framerate to 25fps.

  The same result can be achieved by selecting the layer in the comp and go to the menu Layer > Time Stretch and set to 200%.

  Barend

  Raamw3rk – independent colourist and visual effects artist
• 

  Vishesh Arora

  January 13, 2013 at 3:26 pm

  Jennifer

  For more info about slowmo have a look at tutorial :

  https://www.mattrunks.com/en/tutorials/after-effects/slow-motion

  Vishesh Arora
  3D and Motion Graphics Artist
  Films Rajendra

  Blog:
  https://digieffects.wordpress.com

  Demo Reel(3D):
  https://www.youtube.com/watch?v=lHPgIJU_BR8

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