Frame Interpolation Explained: Blend vs Motion-Compensated vs AI

Look at the middle picture. Two poles. The video has one. That frame never existed — this tool invented it, badly, because I picked the wrong method. There are four, and each one breaks differently.

Frame interpolation, every setting: the four methods and when each one fails, whole multiples versus exact frame rates, slow motion, and three real jobs. Free, and nothing is uploaded.

The whole panel. A multiplier, or an exact frame rate. How many times — two on the free plan; three and four are Pro. The method. Slow motion. Only part of the clip. And the file type. Above it all, the plan tells you what you will get before you press a thing.

25 fps × 2 = 50 fps · 852×480 on Free

These three pictures are the whole idea. An original frame, the next original — and in the middle, one that does not exist in your video. Change the method, and watch the middle one.

FPS only does not invent anything. It repeats frames, so the number goes up and the motion is exactly as choppy as before. Use it only when a platform demands a frame rate and you do not care how it looks.

Blend mixes the two neighbours together. It is cheap and nearly instant — and on anything that moves, you get this: two poles, and a rider you can see through. Keep it for slow, gentle motion.

Motion-compensated works out where things moved and builds the new frame from that. It is the default for a reason. But look at the pole where the rider crosses it — it breaks.

And AI. One pole, one rider, clean. A thin object in front of something moving is exactly what it is best at — and it is by far the slowest of the four.

Which is what only part of the clip is for. Try AI on the two seconds that matter before you commit a whole video to it.

Exact 60 fps: the "every original frame is kept" line disappears

The jobs. One: a platform wants sixty frames a second. Exact sixty, motion-compensated — the number is met, and every frame in between is built from real motion, not copied.

Two: a camera move with something thin in the foreground — a pole, a fence, a railing. Two times, AI, and only the part that matters.

Three: slow motion. Tick it, and the new frames go into making the moment last longer instead of playing it faster. Two times the frames, and two seconds becomes four.

So. FPS only to hit a number. Blend for slow, gentle motion. Motion-compensated for most footage. AI for thin things in front of moving things — tried on part of the clip first. And stay on a whole multiple unless you have to hit an exact rate.

On the free plan you get two times, up to sixty frames a second, at eight-fifty-two by four-eighty. Pro goes to four times, a hundred and twenty frames a second and up to four K — and all of it still runs on your own machine.

And the video never left it. This is the browser’s own record of everything it fetched while every one of those frames was invented — not one request carried the clip.

Free, no account, nothing uploaded. Watch the middle frame, then pick the method — and I will see you in the next video.