Understanding Frame Interpolation and 60FPS Delivery

One of the easiest ways to make a video look "premium" on a mobile feed is by delivering it in buttery-smooth 60 frames per second (FPS). But what happens if your source footage was shot at 24 or 30 FPS? This is where frame interpolation comes in.

What is Frame Interpolation?

Frame interpolation (often using optical flow algorithms) analyzes the movement between two existing frames and artificially generates a completely new frame to place between them. It essentially guesses what the motion would have looked like.

When to Use It

• Gaming Content: If you recorded gameplay at 30fps but want it to look like a native 60fps console output, interpolation tools can do wonders.
• Slow Motion: The most common and effective use of interpolation. Stretching 30fps footage to 50% speed normally results in a choppy 15fps output. Interpolation generates the missing frames, creating smooth pseudo-slow-motion.

The Pitfalls of "Soap Opera Effect"

You should absolutely avoid applying 60fps interpolation to cinematic footage shot at 24fps. Movies and high-end videos rely on natural motion blur generated by shutter speed. Interpolating 24fps to 60fps removes that cinematic feel, resulting in hyper-smooth, artificial motion often called the "soap opera effect."

Platform Delivery

When delivering 60fps content to platforms like TikTok or Instagram, ensure that your video editor's project timeline is strictly set to exactly 60.00 fps (or 59.94). If you upload a 60fps video but the platform detects an irregular edit list box, it may forcefully drop frames, rendering your interpolation efforts useless and creating a stuttering mess.