Reverse an MP4 video
Drop an MP4 and get back the same clip playing in reverse — video and audio both reversed. The reversal runs entirely in your browser, so the video never leaves your device.
About reversing a video
Reversing a video decodes every frame into memory, flips the order, and re-encodes the result. Both the video frames and the audio samples are reversed so the clip plays fully backwards. This is the same approach used by the reverse and areverse filters in FFmpeg.
Because the entire video must be buffered in memory at once, reversing is memory-intensive. It works best for short clips — a few seconds to a minute. Very long or high-resolution videos may exhaust the available browser memory and cause the conversion to fail.
Is it private?
Yes. The converter is WebAssembly and browser APIs running on your own machine. Nothing is uploaded, stored, or seen by us — there is no server to send files to.
Frequently asked questions
- Does it reverse the audio as well as the video?
- Yes. Both the video frames and the audio samples are reversed, so the clip plays fully backwards. This matches the reverse and areverse filters in FFmpeg.
- Are my videos uploaded to a server?
- No. The reversal runs on your device using WebAssembly and browser APIs. Your video is never sent anywhere, and the tool keeps working even if you go offline after the page loads.
- Is it free, and do I need an account?
- It is free with no watermarks, no daily caps, and no sign-up. Drop a file, reverse it, and download the result.
- Is there a limit on video length or size?
- There is no fixed limit, but the entire video must be buffered in memory at once, so reversing works best for short clips of a few seconds to a minute. Very long or high-resolution videos may exhaust the available browser memory and cause the conversion to fail.