Timewarp defaults to 50 percent playback. We’ve got our clip all trimmed, so let’s apply timewarp.
I find it easier to precompose the clip, because it allows you to trim the clip in the precomp to avoid navigating through the original clip once your effect is applied. Because after effects won’t let an effect extend the length of your clip, you can either right click the clip and enable time remapping, or you can precompose the clip by right clicking and selecting precompose, or hitting control shift c. Using time effects in After Effects requires just a bit of prep before you start applying effects. Now Let’s dive into after effects and see what it can do. For video tutorials on using Twixtor, you can click on the links. But if you have After Effects or a third party plugin like Twixtor, you can get better results.
If you don’t have additional software or plugins, you’re pretty much stuck with these options. While this looks slightly better, it still appears fairly jerky. Now if we go frame by frame, you can see that premiere is creating new frames by blending them together. Let’s take a look.įor a smoother look, right click the clip and select frame blend. This is going to result in a stuttery type of slow motion. If go to the beginning of our clip and advance one frame at a time, you’ll notice that in order to slow the clip down, Premiere is simply repeating each frame twice. Now we can change the speed to 50 percent. We’ve got the clip on our timeline, and by right clicking it we can select speed/duration. Let’s dive into premiere, to see what we can do to slow it down. This footage was shot at 24 frames per second. Here’s a clip of our skateboarder moving on a path at regular speed. To achieve this, frames will either have to be repeated, causing a stuttery slow motion effect, or the software will have to create brand new frames from the preceding and following frames to fill in the blanks. Now those same 24 frames you captured have to cover 48 frames in real time. Let’s say you’ve got 24p footage, and you want to play it back at 50 percent. Any type of “digital” slow motion will require interpolation of frames. Most video editing software will allow you to slow down a video clip, but all post production slow motion abilities are not created equally. Of course, as video producers, we’re always trying to push the technological limits, and once 40 or even 20 percent slow motion was within our reach, we immediately wanted to slow our footage down even further, or maybe we just wanted to take footage shot at standard frame rates and get regular slow motion to look better.
But many of today’s cameras that shoot 60 and 120p are reasonably priced, so getting that film quality slow-mo is well within our grasp, and if you’re a plus member, you can watch a full tutorial on shooting techniques for slow motion by clicking on the link.
Getting glass smooth slow motion was once a pretty tough task for the average videographer. With the right combination of footage and properly applied effects you can achieve stunning results In this segment, we talk about faking slow motion in post production, including what type of footage works best, and the results you can get using using clip speed, frame blending, timewarp, and twixtor. But what if you want to slow down regular old 24 or 30p footage, or you want to slow down 60 or 120p footage beyond the frames you have? Using the right tools with the right footage can give you results like this…
In an ideal scenario, all your slow motion shots would be pre-planned, and you could shoot at proper frame rates to get great looking, frame accurate, slow motion.