Creating Slow Motion Effect in Adobe Premiere Pro


Adobe Premiere Pro 1.5 is a software designed for video editing in real time. It counts among its features with audio tools that allow users to cut, add, link different elements, adjust the speed of the scenes or work with videos and transitions. Besides, you can modify colors, insert images in different formats, correct defects related to lighting and supports the use of filters and moving images.

The best of all is that if you are willing to try it, you can download and get a free 30 days trial period. Getting the full version allows you to take full advantage of what this program has to offer.

I am going to show you how to reinterpret overcranked 50p and 60p footage using Adobe Premiere Pro to create true slow motion.

I’ve recorded a video in 50p. Normal television is at 25p. Technically, I’m going to get 50% playback and it will get twice as long--nice slow motion speed.

So, let’s see how this is done. If we look at the details of the clip, it’s 1280 x 720 at 50 frames per second (fpm). I want to now tell this to become 25 frames per second.

There are a few tricks to doing this.

Making a Duplicate

First, you don’t want to lose the original file. You’re going to want to go to the Edit menu, then Duplicate.

Name this duplicated clip “slow.” That way, you can preserve your original clip while applying changes to this one.

To create a slow-motion clip, right-click on the clip, go to Modify, and then Interpret Footage.

This will bring up the following settings:

Under Frame Rate, select Assume This Frame Rate and change the number here to match your output. As mentioned earlier, my output for this particular clip is 25 fps.

After this has been done and OK has been clicked, we need to find a nesting sequence so the audio syncing does not mess up. Sometimes, when we’re messing with a clip’s interpretation, it becomes a bit strange.

The safe way to prevent this from is to drag and drop the clip onto the New Item button. When you release the clip, the New Item button will interpret that particular bit of footage and make a matching sequence for you. No longer do you need to go in and manually find the settings. This speeds things up dramatically.

Now, my clip has been slowed down--awesome! But my audio is kind of stalling at the very start.

What I am going to do is delete this clip from my Timeline, reselect it, and use the in-and-out points to edit the audio accordingly:

Now, I can drag this clip back into the Timeline and everything should be hunky-dory.

Next, click on the 1080p tab on Timeline and then drag your slowed-down nested clip into that Timeline.

Then, right-click on that clip and select Scale to Frame Size.

After this, a render bar will be present, but it’s not an issue for me. By dragging the ends of my clip, left clicking and selecting Ripple Delete, I am going to isolate the section that matters most to me during this edit.

Now when I press play, not only are my clip’s audio and video in sync, but also in true slow-motion.