<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>

CC BY-SA 4.0
2022-09-15T13:46:32.260Z
2022-09-15T13:46:32.260Z
user406482
<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>

<framerate><frame-interpolation>
How can I convert a 30FPS video to 50FPS video without affecting the length of the video?
The KNVB
# 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


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## 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.


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