<p>If you want a new image at every beat, start with the frame rate of your video. 30 frames per second gives 1800 frames per minute. Divide that by 90 to get the number of frames per beat, in this case 20. So if you change the image every 20 frames the pace will be the same. You do have to align the cuts with the beat; just matching the pace is only part of the battle.</p>

<p>In the general case:</p>

<p>(FPS x 60) / BPM = number of frames per beat</p>

CC BY-SA 4.0
2018-05-20T21:33:27.710Z
2018-05-20T21:33:27.710Z
Jim Mack
<p>I am making a home vacation video set to music. The song I selected has a BPM of 90.</p>

<p>I want the video clips to match the beat, so for example, every time you hear the beat a new video clip begins. <strong>How would I determine how long the video clips should be?</strong> If there is an equation I can use for other BPMs as well that would be great.</p>

<sync><music>
How long should video clips be to be in sync with a 90 BPM song?
tycrek
# How long should video clips be to be in sync with a 90 BPM song?

(Asked by: username_0 on 2018-05-20)

I am making a home vacation video set to music. The song I selected has a BPM of 90.

I want the video clips to match the beat, so for example, every time you hear the beat a new video clip begins. **How would I determine how long the video clips should be?** If there is an equation I can use for other BPMs as well that would be great.

**Tags:** sync, music


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## 1 answers

### Answer by username_1 on 2018-05-20. Score: 1 | Accepted answer

If you want a new image at every beat, start with the frame rate of your video. 30 frames per second gives 1800 frames per minute. Divide that by 90 to get the number of frames per beat, in this case 20. So if you change the image every 20 frames the pace will be the same. You do have to align the cuts with the beat; just matching the pace is only part of the battle.

In the general case:

(FPS x 60) / BPM = number of frames per beat


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