2 Replies Latest reply on Feb 27, 2010 10:59 AM by JoeDinosaur

    23.976 fps


      Hi Everyone,


      I have an "Interpret Footage" question that I hope someone can answer.


      In my 3d application (Electric Image), I rendered a clip with a frame rate of 23.976 fps.  When I imported this clip into After Effects and performed an "Interpret Footage" on it, 23.98 appeared in the "assume this frame rate" box.  After I changed "23.98" to "23.976" in the "assume this frame rate" box, I performed another "Interpret Footage" and it showed the "assume this frame rate" as 23.976 fps.


      When I apply "Interpret Footage" to this clip, should I change the "assume this frame rate" value of 23.98 to 23.976 and proceed with my compositing?


      Thank you in advance for your advice,


      Joe T

        • 1. Re: 23.976 fps
          Rick Gerard Adobe Community Professional & MVP

          The short answer is yes.


          The long answer is that many apps round off the frame rate when they tag the file. Frame rate only matters when you're mixing footage with other footage. You always get all the frames when the composition frame rate and the footage frame rate match, but if they don't match exactly, some interpolation of the pixel values between frames will take place somewhere in the timeline.

          • 2. Re: 23.976 fps
            JoeDinosaur Level 1

            Hi Rick,


            Thank you for your explanation - it is very helpful.




            Joe T