- • Complete Film Editing Guide
- 1.1 How to cut a film
- 1.2 How to rotate a film
- 1.3 How to play a film backwards
- 1.4 How to make slow/fast motion
- 1.5 How to add subtitle to film
- 1.6 How to add scrolling credits film
- 1.7 How to remove subtitle from video
- 1.8 How to remove watermark from video
- 1.9 How to remove logo from video
- 1.10 How to resize a film
- 1.11 YouTube channels to learn filmmaking tips
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 video production, which make the video clips play faster or slower than original speed. Usually, the slow-mo effect can give us a "close-up in time", and introducing a feeling of surreality, while the fast motion effect or video acceleration effect is used to make videos dramatic or funny. Also, you can speed up the video to playback all scenes and make the video shorter.
Whether you want to watch YouTube videos in a slow motion with a video slow downer, or speed up and fast forward the long scenes on your Windows or Mac computer, you will find there are many video editing software available for slow down or speed up videos on your Windows or Mac computer, such as Windows Movie Maker or iMovie video editor. While in this article, we are going to only show you how to make these effects in post-production with Wondershare Filmora video editor.
Note: If you prefer to edit your video footage on your phone, check How to Make Amazing Slow Motion Videos on Android.
- Part 1: How to Make Slow Motion & Fast Motion Video by Adjusting Speed [3 Steps]
- Part 2: How to Speed up & Slow Down Video Speed by Changing Video Duration
Part 1: How to Speed up & Slow Down Video Speed by Adjusting Speed [3 Steps]
Wondershare Filmora is such a video editor that we'd like to introduce to you whether you are using a Windows or a Mac computer, with this simple video editor, you can quickly speed up and slow down videos. Read on to see how to speed up or slow down your creativeness. Below is a video tutorial about how to add fast/slow motion video effects with Filmora. You can download Filmora now and have a try.
Apart from the slow/fast motion video tutorial, you can also follow the steps about how to speed up and slow down videos below and make a slow-motion or fast-motion videos with Filmora easily.
1. Add video files to the Filmora video editor
Click "Import" on the media library 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 Filmora 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.
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.
Note: To change the video speed and make a slow motion/fast motion video, please add your video footage to this first track.
- 0.5: half of the original speed (Slow Down, Half)
- 1: The original speed
- 2: Double the original speed (Speed Up, Double)
- Other speed available to choose: 0.1 times, 0.2 times, 0.25 times, 0.33 times, 0.5 times, 2 times, 3 times, 4 times,5 times, 10 times etc.
You can simply change the video speed by dragging the speed slider. To speed up the video to make a fast motion effect, drag the slider to the right. To slow down the video to make a slow motion effect, drag the speed slider to the left. You can always drag the slider to set to an optional video speed rate.
3. Adjust Audio Sound [Optional]
Whenever you speed up or slow down the video playback speed, the video audio speed will change accordingly. If you want to keep the original playback speed of the video audio, you can detach the audio from video first and then do some editing to make a perfect pitch to the video.
Besides, you can also add a new sound to the video to replace the original video audio, for the specific steps, check our guide about How to Replace Audio in Video.
4. Export fast/slow motion video
When you have finished adjusting the video speed, click "Export". 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 and Vimeo directly or burn video to DVD disc.
Keep in mind that when you adjust the video speed to speed up or slow down a video clip, there are some dos and don’ts that you should pay attention to. Our YouTube official channel has made a video about it, watch the video below and let’s know if it is useful for you.
Part 2: Make Slow Motion & Fast Motion Video by Changing Video Duration
Filmora also allows you to adjust the duration of the video clip to change the video speed. After importing the video clip to the timeline, double click it to open the Editing panel. Go to Duration section and you will see the original duration of the video. Adjusting the duration of the video longer will add a slow motion effect to the video. Changing the duration of the video to a shorter time will speed up the playback speed of the video.
Preview the video to check if it gets the best fast motion or slow motion effect and then save and export it.
Tips: Above are two ways of speeding up or slowing down a video playback speed, besides fast motion and slow motion video effects, you could also do some basic as well as advanced editing with Filmora, such as rotating, reversing, chroma keying, etc., what's more, there are lots of preset video effects that you can use to give your video a hollywood look. If you want to know more features that Filmora provides, check this 60s introduction video below.
In fact, except for Filmora, many other video editing software can help you do this effect, professional tools like Adobe Premiere, After Effects, Sony Vegas, Final Cut Pro, and basic tools like Windows Movie Maker, iMovie. Just choose one and get started. Let us know your opinions in the comments section below.
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