# Reverse Video: Online Video Reverser & Boomerang Maker

Play a video backwards or turn any moment into a forward-and-back boomerang.

## How it works

1. Add an MP4, MOV, or WebM clip and optionally set start and end seconds.
2. Pick Reverse (to play video backwards) or Boomerang (forward then backward), and choose how to handle the sound.
3. Run Reverse video, preview the clip, and download your MP4.

## Frame-by-frame video reversal and boomerang loops

Audo’s online video reverser and boomerang video maker flips MP4, MOV, MKV, WebM, and AVI clips up to 2 GB without an account, with the first 5 minutes free, 5 times a day, and no sign-up. Standard video codecs store frames using forward predictions from earlier keyframes, which means playing a video backwards requires decoding every frame in the segment and encoding a fresh timeline in reverse order.

By keeping intermediate segments lossless before writing the final H.264 MP4, Audo avoids multi-generation compression artifacts whether you are reversing a full clip or building a forward-then-backward boomerang for social media.

Tool: Reverse video (`reverse_video`). Price: 1 credit a minute — $0.01/min ($0.60/hr), with no subscription — of input for whole files, charged only when a job succeeds.

## Free API

```bash
curl -F file=@clip.mp4 https://audo.ai/api/try/reverse-video -D response.headers -o response.body
```

Read response.headers and response.body before naming media. Handle 202, 200 JSON and errors with the complete response client at https://audo.ai/docs/api?utm_source=markdown&utm_medium=agent#responses.

Free for the first 10 minutes of each file, 10 times a day per person, with no key or account. Uploads up to 10 GB, 2 at once from one address. The response is the result itself; a job that runs longer than about 30 seconds returns 202 with a link to check on it. With an API key (`-H "Authorization: Bearer $AUDO_API_KEY"`), omitting free runs the whole file with credits if the balance covers it, otherwise the free portion if quota remains. Set free=true to prohibit spending; for paid whole files use free=false with an approved positive max_credits. A free result cut short comes with finishUrl (and the Audo-Finish-Url header when the response is the file itself): give it to the person, who pays there (from $5, no sign-up), and the whole file runs; keep checking the status link, whose finishedBy names the whole-file job and its own status link. Details: https://audo.ai/docs/api.md

## Options

Form fields with the same names as the MCP tool's inputs:

- `range`: Only this range, [start,end] in seconds, with decimals for exact frames. Default the whole video.
- `boomerang`: Play the range forward then backward. Default false.
- `audio`: Sound on the backward leg: reversed, muted, or kept playing forward. Default reversed.

## Languages

Any language: it works on the sound, not the words.

## From an assistant (MCP)

Add https://audo.ai/mcp and sign in (setup for each assistant: https://audo.ai/setup.md). The tool is `reverse_video`:

> Plays a video or a selected time range backwards. Can make a boomerang (forward then backward), with reversed, muted, or unchanged sound. Long videos reverse in bounded segments. It costs 1 credit a minute of the selected range, or the whole input without a range, charged only if the job succeeds. Returns the result with download links, or job_id for get_job if it takes longer.

Example: "Use Audo to reverse video from clip.mp4."

## Questions

**How do I reverse a video online?** Upload your clip at the top of the page, leave the mode on Reverse, and press Reverse video. Audo reorders every frame from end to beginning so falling objects rise, splashes gather back into a glass, and motion plays backwards in a new MP4 download.

**Can I reverse only a short section of an MP4 or MOV?** Yes. Enter optional start and end times in seconds (including decimals like 1.5 to 4.2) before running the tool. Audo extracts and reverses just that moment so you do not have to trim the video separately first.

**How does the boomerang video maker option work?** Boomerang plays your chosen clip range forward once and immediately plays the same frames backwards, doubling the range length into a smooth back-and-forth motion. To make that boomerang repeat several times in a row, send the downloaded MP4 to Loop video.

**Can I reverse the audio, keep the original sound, or mute it?** You have all three choices. Reversed flips the soundtrack backwards along with the picture; Kept plays the original forward audio over the reversed video; and Muted exports a silent reversed MP4.

**Does Audo's video reverser work with longer recordings?** Yes. Rather than loading an entire recording into memory at once, Audo reverses frames in lossless disk segments and stitches them together in reverse order, allowing clips up to the 5-minute tool limit to complete reliably.

**What if I only want to play audio backwards without a picture?** Use Reverse audio, which flips songs, voice memos, or a video’s soundtrack and exports an MP3, WAV, or FLAC audio file.

**Is it free?** Yes. Audo processes the first 10 minutes free, 10 times a day, without an account. The whole file costs $0.01 a minute ($0.60 an hour), charged only on success. No subscription. See pricing.

## More

- Every tool: https://audo.ai/llms.txt
- OpenAPI: https://audo.ai/api/openapi.json
- This page for people: https://audo.ai/reverse-video?utm_source=markdown&utm_medium=agent