Loop Video

Repeat a short clip — a background loop for a stream or a shop display, a meme, a product spin, a music practice section — a set number of times or until it fills a target length. The picture is copied without re-encoding, so the loop is quick even for long or large videos and loses no quality. The sound is re-encoded along the same timeline, which keeps it in step with the picture at every repeat (within a few milliseconds, with no drift). Everything happens in your browser with the ffmpeg engine (about 30 MB, downloaded once); nothing is uploaded.

How to use this tool

1. Choose "a number of times" or "until it reaches a total length".
2. Enter the number of plays, or the total length such as 1:00 or 10:00.
3. Choose one or more videos; looping starts right away.
4. Play the result and download it; it keeps the original format.

Formula

Plays = ⌈total length ÷ clip length⌉; final length = plays × clip length (or exactly the total)

The clip length is taken from the picture itself: the time of the last frame plus its duration, so every repeat starts exactly one clip length after the previous one. When a total length is set, the last repeat is cut at that time; because the picture is copied rather than re-encoded, the cut lands on a whole frame and can run a few frames (under about 0.1 s) past it. Because the sound track of a video is usually a few milliseconds longer or shorter than its picture, simply copying it would drift further out of sync with every repeat; re-encoding it on the picture's timeline keeps it within a few milliseconds.

Example

A 7.5-second clip looped to 1:00 needs ⌈60 ÷ 7.5⌉ = 8 plays, and the result is 60 seconds long. Looping it 3 times gives 3 × 7.5 = 22.5 seconds. A 40 MB clip played 10 times is about 400 MB, because the copied picture data repeats.