Slow Motion After Effects
Learn how to speed ramp your video and how to create smooth slow motion by using Time Remapping in Adobe Premiere Pro.
Hi guys, I've just downloaded After Effects CC and wanted to learn how to use it. I've managed to create a composition and imported a few test video footage. However, when playing the footage on the timeline or just normal preview the playback is super slow. I'm sure I've done a noob thing somewher. Slow Motion in After Effects I have 24pa footage and I need to do some slo mo shots. The plug in for Premiere 1.5 sucks and i was told that After Effects Time Remappiing would do the trick, but I'm a little lost on it. Since I was filming the clip knowing I'd do for slow motion, it is 60fps and a high shutter speed. I would like to slow this clip down to 50% in AE with time warp and not lose any of the clip. So, theoretically, a 10 second clip slowed down to 50% should come out to be 20 seconds. Any help is appreciated. Video: Slow motion in After Effects. This movie is locked and only viewable to logged-in members. Embed the preview of this course instead. Skip navigation. In this tutorial I will show you how to create smooth slow motion in Adobe After Effects. Learn how to create smooth slow motion using frame blending.
Tutorial Files
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Walter Kraken.mp4 How to download youtube videos for free on mac.
There are 3 different ways that you can control the speed of your video in Adobe Premiere Pro.
- You can use the Rate Stretch tool
- You can define the playback speed of your clip using the Speed/Duration settings
- You can use Time Remapping
Let’s talk about how to use each of these options.
Using the Rate Stretch Tool
One of the easiest way to speed up or slow down your video is with the Rate Stretch tool. You can find this tool in your toolbar. It might be hidden behind one of the other editing tools so simply click and hold to access it.
With the Rate Stretch tool selected, simply click on the end of your clip and shorten or extend it to speed up or slow down your video.
Specifying the Playback Speed of your Video Clips
Slow Motion After Effects Tutorial
Another option is to right click on your clip in the Editor Timeline and go to the ‘Speed/Duration…’ settings.
This will open up the Speed and Duration settings for the clip. In her you can specify the percentage speed of your video. You can also Reverse the video, select to Maintain Audio Pitch and Ripple Edit or Shift any clips further in the timeline.
Using Time Remapping
All of the previous options affect the entire clip. If you need more control you can use Time Remapping. With Time Remapping you can create speed ramps where you ramp up or down the speed of your video smoothly.
You can enable Time Remapping by right clicking on your clip and going to Show Clip Keyframes -> Time Remapping -> Speed.
This will add a horizontal white line to the clip on your timeline that represents the playback speed. You can drag this line up or down to speed up or slow down the clip.
You can also create keyframes (with CTRL/CMD + click) and animate the speed of the clip. In order to smoothen out the transition you can drag the handles of the keyframes left and right to create interesting speed ramp effects.
The Complete Beginner Guide for Adobe Premiere Pro
Time Interpolation & Creating Smooth Slow Motion
When you slow down a video in Adobe Premiere Pro, you stretch out the content. Premiere Pro needs to figure out where to get the additional frames to extend your video duration.
If you want smooth slow motion you need to film your video at a high frame rate. If your clip is filmed at 60 FPS, your sequence is set to 30 FPS and you are playing your clip back at 50% speed, Premiere Pro has enough additional frames in the video to give you perfectly smooth motion.
However, if your video was shot at 30 FPS, Premiere Pro needs to figure out where to get those additional frames from to play back at 50% speed.
This is where Time Interpolation Monitor for mac os. becomes important. Time Interpolation allows you to control how Premiere Pro generates the frames required to let you slow down your video.
You can access this option by right clicking the clip and going into the Speed/Duration settings.
Time Interpolation gives you 3 options.
After Effects Slow Down Video
Frame Sampling
Premiere Pro will source the frame from the video. If there are not enough frames in the video (e.g. not shot at a high enough frame rate), the nearest frame will be used. This can lead to duplicated frames and stuttering video if you slow down your video.
Frame Blending
Premiere Pro will generate a blended frame to fill the extra space. This frame is a mix between consecutive frames in the source video. You will likely see duplicated edges and a motion trail where there is movement.
This can be an interesting effect if you want to convey the feeling of someone being a bit disoriented, drunk or zoned out.
Optical Flow
Optical Flow looks ahead and back to guess the movement of the objects in your scene based on their pixels. Premiere Pro will try to generate frames that fill in the missing movement. Video to mp4 converter for mac.
This option will look closest to true slow motion. However you may see little artefacts or glitches and it will likely not be quite as perfect as shooting your video at a high frame rate.
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