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How to Make Slow/Fast Motion Videos (Speed Up/Slow Down Effect)

Fast Motion/Slow Motion effects, also known as Speed Up/Slow Down effects in Windows Movie Maker and Windows Live Movie Maker, which make the video clips play faster or slower than original speed. Usually, the effect is used to make videos dramatic or funny.

Now Wondershare Video Editor also allows you to quickly make fast motion and slow motion videos. Read on to see how to speed up or slow down your creativeness. Below is the free trial verion of Wondershare Video Editor (Windows/Mac).

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Step 1: Add video files to the program

Click "Import" on the primary window and select the video files from your computer to add them into this program. Alternatively, you can simply drag and drop files to the User's Album. Wondershare Video Editor supports almost all regular video formats, such as MP4, AVI, WMV, MOV, FLV, M4V, MPG, VOB, ASF, 3GP, 3G2, F4V, MPEG, TS, TRP, M2TS, MTS, TP, DAT, MKV, DV, MOD, NSV, TOD, EVO, etc.

slow motion and fast motion

Step 2: One click to speed up or slow down

Next, drag videos from the User's Album to the video track on the Timeline, and then double-click the added video to open video editing panel. Locate the Speed option, and the speed numbers will indicate how fast or slow the motion effects will be. Adjust to the speed you want.

  • 0.5: half of the original speed (Slow Down, Half)
  • 1: The original speed
  • 1.5: 1.5 times the original speed (Speed Up, 1.5 x Speed)
  • 2: Double the original speed (Speed Up, Double)

fast slow motion video

Note that you can also click the "Audio" tab at the bottom to adjust its volume, pitch, set fade in/fade out effect, etc.

Step 3: Export fast/slow motion video

When you have finished adjusting the video speed, click "Create". You can save video in any popular formats by clicking "Format". If you want to play your new video creation on your iPod, iPhone, iPad, click "Device" and select the icon for your devices. You can also share your videos on YouTube directly or burn video to DVD disc.

save speed up, slow down effect

Tips: Besides Fast motion and slow motion video effects, you could also change the speed and pitch of the audio to change the voice. Give it a try.

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Product-related questions? Speak directly to our Support Team >>

You can use the flip button next to rotate to reverse a video in Wondershare Video Editor.
what about reversing a video clip?
Currently we only have the option of .5,1,1.5 and 2.0. Will add the custom speed in the further update.
Can you speed up or slow down by a custom speed or do you only have option of .5, 1, 1.5, or 2.0X ? I want to speed up to match video timing to a certain audio clip
Thank you!
Thanks for the info that it can be done. Just started this morning with the software, I used the scissors symbol to delete a section of the video. Are you saying to use the scissors to split it? Then slow that section & re-insert?
Yes, you can. You first need to split that portion of the video (cut it). Then apply the slow /effect that you want.
Is it possible to slow the speed down of just a small segment of a video? Maybe I need to cut that section out, slow it down & save it, then re-insert it into the the rest of the video?
Home > Resource > Video Effects > How to Make Slow/Fast Motion Videos (Speed Up/Slow Down Effect)


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