I have wanted a way to know the interval I should use depending on how many hours the images are taken and the length of movie I want. I think I have a formula that works.

Hours divided by minutes times 2 equals the interval.

For instance I want a time lapse taken over 3 hours that will last 1.5 minutes when I watch it.

3 hours/1.5 minutes = 2, 2*2 = 4. The interval is 4.

I have created a little excel formula that calculates recording times for any desired video length and any interval. You choose the output video length, and the interval settings, and it tells you how long to record. Any way to share it?

Raising my hand I have a question … what if you dont care how long the resulting time lapse video is… So for example, using the case discussed here, what if i did not care if the video is 1.5 minutes or 3 minutes long when i watch it. I just need a way to know what interval is best for the situation. Is there a way to know what interval to use that is best for the actual situation?

Here is a general guide from the Wyze time lapse support article. Hope this helps.

Creative Tip: If your Time Lapse is of a slow-moving motion, like a flower blooming, you will want the interval to be a minute or longer. If your Time Lapse is of a short-lived event, like clouds moving in the sky on a windy day, the interval should be around three seconds.

Edit: There are several Time Laspe calculators in the app store you can check out as well.