To create a smooth and natural slow motion effect in Premiere Pro, the key is to use interpolation reasonably, control resolution and grasp the rhythm. First, turn on the "Time Interpolation" function, right-click the video clip → Explain the material → check Assume this frame rate and enter a higher frame rate (such as 240fps) in the project panel, so that the software can generate intermediate frames through the optical flow method to improve the picture quality; secondly, select the appropriate playback speed adjustment method according to the scene, including right-clicking the speed, shortcut keys to drag the speed line or using "Time Remapping" to hit keyframes to achieve gradient slow playback; finally, pay attention to avoiding blurring and loss of picture, try to use high-frame rate materials, match sequence resolution, and appropriately adjust "motion amplification" when interpolation is performed to maintain clarity.
It is actually not difficult to create a smooth and beautiful slow motion effect on Premiere Pro, but there are several key points to pay attention to. Not all materials can be slowed down, nor is it just to lower the playback speed. Truly natural slow motion requires interpolation, resolution control and a sense of rhythm.

Use "time interpolation" to improve slow motion picture quality
Many people directly right-click the clip to select "speed/duration" and then lower the percentage to achieve slow motion. Although this method is simple, if the frame rate of the original material is not high enough, the picture will stutter or jump.

To make slow motion smoother, it is recommended to turn on the " Time Interpolation " function:
- Select video clips in the project panel
- Right-click → select " Interpret Footage "
- Check " Assume this frame rate " and enter a higher frame rate (such as you plan to do slow playback of 240fps material)
- Then go back to the timeline to adjust the speed
In this way, Premiere will try to generate intermediate frames through the "optical flow method" to make the picture transition more natural.

Several ways to adjust playback speed
You can choose different ways to set slow motion according to the usage scenario:
- Right-click to edit → Speed/Duration → Enter a speed value below 100% (suitable for fast operation)
- Shortcut key Ctrl/Cmd R Drag speed line (suitable for fine adjustment)
- Add "Time Remap" to the effect control (suitable for complex speed changes)
If you want a certain segment to play normally first and then suddenly slow down, you can use "time remapping" to keyframe. For example, slowly slow down from the third second, rather than one-size-fits-all.
Pay attention to the loss of image quality and details
Many novices find that the picture is blurry or noisy after doing slow motion, because:
- The frame rate of the original material is too low (for example, 1080p 30fps videos are forced to slow down to 10%)
- The contents of the software "guessing" during interpolation processing are not accurate enough
- Inappropriate scaling, causing pixel stretching
Solution:
- Try to use high frame rate shooting materials (such as 1080p 120fps or higher)
- Ensure resolution matches material in "Sequence Settings"
- If interpolation is used, adjust the "motion amplification" appropriately in the "effect control" to avoid blurring
Basically that's it. By mastering these key steps, you can achieve a professional slow-motion effect that can be done without additional plug-ins.
The above is the detailed content of how to do slow motion in Premiere Pro. For more information, please follow other related articles on the PHP Chinese website!

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