The Pre-render option means that After Effects will automatically add an Import & Replace post-render action to your render. This will replace your original, heavy composition with the newly rendered video. This should dramatically speed up your originally slow preview in After Effects. Motion graphics are animations and footage used to create the illusion of motion in any video. Creatives use them to incorporate stunning transitions, moving backgrounds, and smooth animations of all sorts into their video projects. Motion graphics make your videos more exciting. Move over boring presets! Jan 19, 2015 After Effects is an incredibly intense program for your graphics card (no surprise, right?) And while there may be hundreds of graphics cards available for your computer, only a few are recommended by Adobe to run After Effects. Adobe specifically recommends certain GeForce, Quadro, and Tesla cards. After Effects is no more than 60 fps on average, I will consider this value a limit because not at 99 fps could arrive. I will use your instructions. In this clip, you'll learn how to overcrank footage from a Canon DSLR camera like the 7D or T2i to a lower frame rate for a high-quality slow-motion effect. Whether you're new to Adobe's popular motion graphics and compositing software or a seasoned video professional just looking to better acquaint yourself with the program and its various features and filters, you're sure to be well served.
Learn how to speed ramp your video and how to create smooth slow motion by using Time Remapping in Adobe Premiere Pro.
Tutorial Files
Drone Flight.mp4
Walter Kraken.mp4
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.
Adobe After Effects Software
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
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 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.
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.
Slow Motion In Adobe After Effects
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.
Adobe After Effects Slow Motion Speed Motion
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