Answers.Body: <p><a href="https://en.wikipedia.org/wiki/Frame_rate#Instruments" rel="nofollow noreferrer">Several commercial solutions</a> seem only to support full integers as multipliers for frame rate conversion. Assuming VSDC works a similar way, thus you might try to go via the LCM of 30 and 50 frames per second and first do a upconversion to 150 frames/sec and afterwards reduce it to 50 frames/sec.
  Sadly <a href="https://www.videosoftdev.com/how-to-achieve-perfect-slow-motion-effect-with-reframing" rel="nofollow noreferrer">the official docs</a> do not say anything about that.</p>
  
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Body: <p>How can I interplote a 30FPS video to a 50 FPS video without affecting the length of the video?</p>
  <p>I have used the VSDC video editor to do so. I have set the reframing mode to optical flow.
  However, I found that it just inserted a previous frame between the adjacent frames.</p>
  <p>I have tried the mkvtoolnix, unfortunately, it just shortened the video duration.</p>
  <p>Is there any better solution?</p>
  
Tags: <framerate><frame-interpolation>
Title: How can I convert a 30FPS video to 50FPS video without affecting the length of the video?
UserDisplayName: The KNVB
ThreadText: # How can I convert a 30FPS video to 50FPS video without affecting the length of the video?
  
  (Asked by: username_0 on 2022-09-15)
  
  How can I interplote a 30FPS video to a 50 FPS video without affecting the length of the video?
  
  I have used the VSDC video editor to do so. I have set the reframing mode to optical flow.
  However, I found that it just inserted a previous frame between the adjacent frames.
  
  I have tried the mkvtoolnix, unfortunately, it just shortened the video duration.
  
  Is there any better solution?
  
  **Tags:** framerate, frame-interpolation
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2022-09-15. Score: 1
  
  [Several commercial solutions](https://en.wikipedia.org/wiki/Frame_rate#Instruments) seem only to support full integers as multipliers for frame rate conversion. Assuming VSDC works a similar way, thus you might try to go via the LCM of 30 and 50 frames per second and first do a upconversion to 150 frames/sec and afterwards reduce it to 50 frames/sec.
  Sadly [the official docs](https://www.videosoftdev.com/how-to-achieve-perfect-slow-motion-effect-with-reframing) do not say anything about that.
  
  
  ---
  
  