Loop Audio

Looping stitches multiple copies of your clip together into one longer file. This tool uses FFmpeg's stream_loop option, which repeats the decoded input the requested number of times before encoding, so the copies are joined sample-accurately with no silent gap inserted between them.

The result is a single continuous MP3 that plays your clip back-to-back. Because the join happens on the raw decoded audio, there is no re-buffering pause or click added at the loop point beyond whatever exists at the very start and end of your original clip — which is where seamlessness really comes from.

Whether a loop sounds truly seamless depends on your source clip, not the repeat operation. If the clip starts and ends at the same point in the sound — for instance the waveform crosses zero and the musical phrase lines up — the joins will be inaudible and the loop feels endless.

If the clip ends mid-note or has a moment of silence at one end but not the other, you will hear the seam on every repeat. For the cleanest result, trim your clip so the end flows naturally back into the start before looping it (an audio cutter is handy for this). Loops designed as loops — many royalty-free music and ambience loops are — repeat perfectly out of the box.

You can repeat a clip up to 50 times in one pass. The practical limit is the output length and your device's memory: a 10-second clip looped 50 times is about 8 minutes, which any modern browser handles comfortably, while looping a several-minute track dozens of times produces a very large file that takes longer to process.

If you need an extremely long result, it is more efficient to start from a longer base clip and loop it a handful of times than to repeat a tiny clip hundreds of times. The output is a standard MP3, so it drops straight into any player, editor, or video timeline.

This looper runs FFmpeg compiled to WebAssembly entirely in your browser, on your own device. Your clip is read into the browser's memory, looped there, and offered back as a download — it is never uploaded to a server and never leaves your machine.

After the page loads you can even go offline and the tool keeps working, which proves there is no upload in the loop. That makes it safe for unreleased music, private recordings, and client work.