<p>You can use <a href="https://evermeet.cx/ffmpeg/" rel="nofollow">ffmpeg</a>, a command line program, to double the video speed:</p>

<pre><code>ffmpeg -i input.mp4 -vf setpts=0.5*PTS output.mp4
</code></pre>

CC BY-SA 3.0
2016-01-21T12:23:54.320Z
2016-01-21T12:23:54.320Z
Gyan
<p>In iMovie you can change the speed of a clip by selecting it in the timeline and then clicking on the icon that looks like a speedometer:</p>

<p><a href="https://i.sstatic.net/zKEfJ.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/zKEfJ.png" alt="enter image description here"></a></p>

<p>Then click on the "Speed:" popup menu and choose "Fast" or "Custom". The "Custom" setting lets you choose how much faster to make it (like 200%, or 50%).</p>

CC BY-SA 3.0
2016-01-22T09:04:59.633Z
Thanks a lot, it worked like a charm. But to me it gives maximum to double the speed. So I tried to do that process 3 times. Now, I have a 9 second video clip (that's amazing, and exactly what I thought of). Thanks again.
Mukul Kumar Chaundhyan
CC BY-SA 3.0
2016-01-22T04:54:59.840Z
2016-01-22T04:54:59.840Z
user1118321
<p>I created a timelapse video from iMovie software and set the time to 0.1 second for every image. But the final output is not satisfying. It seems a bit slow video. I need the clouds to move faster, but they are moving slowly. It is total of 30 second video. I need it to be 15 second video, so that I can get a desired effect. But I cannot change the setting lower then 0.1 second in iMovie. Any suggestions?</p>

CC BY-SA 3.0
2016-01-21T09:27:00.500Z
I have used the below link as reference: youtube.com/watch?v=dPlEAFyGznE
Mukul Kumar Chaundhyan
CC BY-SA 3.0
2016-01-21T10:09:01.203Z
Can you remove every alternate image?
Gyan
CC BY-SA 3.0
2016-01-21T10:15:29.500Z
@Mulvya: I need that clip to be HD, with more fps.
Mukul Kumar Chaundhyan
CC BY-SA 3.0
2016-01-21T10:16:35.063Z
How does removing images change frame size (HD)? What's the fps of your current output?
Gyan
CC BY-SA 3.0
2016-01-21T10:43:25.767Z
@Mulvya: I think it's 720fps right now. Though I'm not sure of it. I tried this for the first time. and above I've posted the youtube link from where I've done it.
Mukul Kumar Chaundhyan
CC BY-SA 3.0
2016-01-21T10:58:07.600Z
It won't be 720fps. The resolution will be 720p i.e. 720 pixels tall, and usually 1280 pixels wide. That tutorial uses a project of 30 fps.
Gyan
<imovie><time-lapse><ios>
Fast forward the timelapse vedio clip
Mukul Kumar Chaundhyan
# Fast forward the timelapse vedio clip

(Asked by: username_0 on 2016-01-21)

I created a timelapse video from iMovie software and set the time to 0.1 second for every image. But the final output is not satisfying. It seems a bit slow video. I need the clouds to move faster, but they are moving slowly. It is total of 30 second video. I need it to be 15 second video, so that I can get a desired effect. But I cannot change the setting lower then 0.1 second in iMovie. Any suggestions?

**Tags:** imovie, time-lapse, ios

> **Comments:**
> **username_0**: I have used the below link as reference: youtube.com/watch?v=dPlEAFyGznE  
> **username_1**: Can you remove every alternate image?  
> **username_0**: @Mulvya: I need that clip to be HD, with more fps.  
> **username_1**: How does removing images change frame size (HD)? What's the fps of your current output?  
> **username_0**: @Mulvya: I think it's 720fps right now. Though I'm not sure of it. I tried this for the first time. and above I've posted the youtube link from where I've done it.  
> **username_1**: It won't be 720fps. The resolution will be 720p i.e. 720 pixels tall, and usually 1280 pixels wide. That tutorial uses a project of 30 fps.  

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## 2 answers

### Answer by username_2 on 2016-01-22. Score: 1 | Accepted answer

In iMovie you can change the speed of a clip by selecting it in the timeline and then clicking on the icon that looks like a speedometer:

[![enter image description here](https://i.sstatic.net/zKEfJ.png)](https://i.sstatic.net/zKEfJ.png)

Then click on the "Speed:" popup menu and choose "Fast" or "Custom". The "Custom" setting lets you choose how much faster to make it (like 200%, or 50%).

> **Comments:**
> **username_0**: Thanks a lot, it worked like a charm. But to me it gives maximum to double the speed. So I tried to do that process 3 times. Now, I have a 9 second video clip (that's amazing, and exactly what I thought of). Thanks again.  

---

### Answer by username_1 on 2016-01-21. Score: 0

You can use ffmpeg, a command line program, to double the video speed:
ffmpeg -i input.mp4 -vf setpts=0.5*PTS output.mp4


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