Reverse Video Online
Processing entirely on your device — large files may take a moment.
Every frame is decoded, reversed and re-encoded (H.264), and the audio runs backwards through an areverse filter — boomerang-style loops, rewind effects and "played it backwards" gags in one click.
Because every frame must sit in memory, keep clips short — up to a couple of minutes is comfortable in a browser tab. The output keeps your input container.
How to reverse video
- 1
Select your files
Drag & drop your MP4 files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to MP4". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted MP4 file individually, or grab everything at once as a ZIP archive.
About the MP4 format
MP4 (MPEG-4 Part 14) is the universal delivery container of digital video. It wraps H.264, HEVC or AV1 video with AAC audio, and its structure — separate metadata (moov) and media atoms — is what makes streaming, seeking and fast-start playback possible. Phones, cameras, TVs, browsers and every social platform assume MP4 first.
Quality is entirely a function of the codec and bitrate chosen at encode time, so an MP4 can be a 10 Mbps HEVC master or a postage stamp. That flexibility plus total playback coverage is why nothing has displaced it in twenty years — conversion between formats almost always ends in MP4.
+Strengths
- ✓Plays on every device and platform in existence
- ✓Streaming-ready structure (fast start, seeking)
- ✓Choice of modern codecs: H.264, HEVC, AV1
!Limitations
- −Quality depends entirely on encode settings
- −HEVC variants hit licensing gaps on some platforms
Frequently asked questions
Does the audio reverse too?
Yes. Audio runs through an areverse filter so speech and music play backwards in sync with the picture.
How long can the video be?
The whole clip is held in memory for the reversal. A couple of minutes at typical resolutions works well; very long or 4K videos may exhaust the browser tab.
Why is reversing slower than trimming?
Trimming stream-copies packets; reversing decodes every frame and re-encodes — that is where the extra time goes.