How to speed up a video.

Changing your video speed can add compelling effects to your clips. With playback options like slow-motion or speed ramping, you can bring new dimensions to your editing work. Read on to find out how to speed up a video across different devices.

computer screen with speed controls

What you’ll learn.


Why change video speed?
 

Slowing or increasing the speed of your clips can change the look, style, and even the narrative of your video. Speed up the playback of your shots to add comedic elements to your story, or use slow-motion to enhance the action on-screen. Changing your video speed is a useful tool for directing and moulding any artistic video.

You can also use speed techniques to alter the technical elements of your shoot – for example, by modifying the pace of transitions or smoothness.

Slowed down video
is often used to draw the audience’s focus to particular details that may otherwise be missed when watching regular speed playback. Sports broadcasting is a good example of slow-motion usage. Slowed-down highlights of contentious football tackles or narrowly missed shots can enhance the action and generate debate among fans viewing at home. 

Sped-up clips, meanwhile, use shorter frame duration to play back the clip at a quicker pace. This technique speeds up long, slow-paced clips, such as time lapses. It can also alter the mood of the clip – which is why this technique is often used for comedic effect.

It’s quite simple to alter the speed of your video clips. Many leading smartphone cameras or DSLR cameras have built-in options to modify the speed of your clips, whether when shooting directly or in playback mode.

Even if your camera doesn’t have any built-in speed editing features, you can change the speed of your clips on a desktop device or laptop with the right software.


How to speed up video on a PC.
 

On a PC, you can speed up your video clips once you’ve imported them onto your hard drive. You’ll need specific editing software to alter them – such as Windows Movie Maker. 

To change the speed of your video using Windows Movie Maker, follow these instructions:

step

On the Timeline screen, select the video clip you want to speed up. 

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Click the Settings button to enter settings mode.

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Under the Settings tab, choose the option for Speed

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Adjust the slider left to right to slow or speed up your chosen clip. 

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Hit the Return option to go back to Timeline and save your settings. 

You can also change the speed of a section of your clip by using the Scissors option to cut the clip in two. Then follow the directions above to modify the speed of your chosen section.
 

How to speed up video on a Mac.
 

You’ll need an app like iMovie to alter the speed of your clips on macOS. You can do so using these steps:

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In the Timeline view, highlight the clip you want to edit.

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Select the Speed button at the bottom of the editing window.

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Choose Slow or Fast from the Speed dropdown menu.

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Adjust the percentage options to set your desired speed. 

You can edit sections of larger clips by using the Clipping tool to cut longer clips into smaller, editable blocks.


How to speed up video on Android.
 

Android devices have options to change your filming speed when shooting raw footage. If you’ve already got your footage, you can change the playback speed on your Camera app.

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Select the video you want to alter. 

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Hit the three-dot menu button.

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Tap Playback Speed. 

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Choose the speed you wish to playback at. 

How to speed up video on iPhone.
 

You can alter video speed on most recent iPhone models. Simply choose to film in slow-motion or time lapse when shooting raw footage. If you’ve already shot your footage at regular speed, you’ll need the iMovie app to modify playback. Follow these steps to do so:

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Select the clip you want to alter in iMovie’s Timeline view.

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Press the Speed button on the bottom menu screen.

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Choose whether to speed up or slow down the clip from the dropdown menu. 

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Adjust the slider to alter the speed faster or slower. 

As with iMovie on a Mac, you can separate longer clips using the Scissors tool to change the speed of certain sections of footage.

How to speed up video on Adobe Premiere Pro.

It’s possible to speed up video using Adobe Premiere Pro. To alter playback speed in Adobe Premiere Pro, follow these steps:  

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Right-click on the clip you want to edit and select Speed/Duration from the dropdown menu.

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In the Speed/Duration box, choose the new percentage for your playback speed.

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Choose a Time Interpolation option, which sets how Premiere Pro renders your playback view. Your choices will include:

  • Frame Sampling. The best playback performance but not the smoothest for frame rates and transitions.
     
  • Frame Blending. This ensures reliably smooth playback performance but it requires more power from your CPU or laptop’s RAM.
     
  • Optical Flow. The best quality for both smoothness of frame rate and playback performance. You’ll need to render the footage as it plays to preview your clip. 
step

Hit Sequence > Render Effects In or Out. Ensure your clip is still selected in Timeline view. 

You can also use the Rate Stretch tool to change the speed on specific sections of your clips. To do this, follow these steps:

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Use the Tools menu, click and hold your mouse on the Ripple Effect option.

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Select Rate Stretch from the dropdown menu.

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Drag the Rate Stretch tool over the sections of clips you want to change.

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Choose the Selection tool to modify playback speed. 

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