Why does reversing take so long?

Reversing requires ffmpeg to first read every frame into memory, then write them out in reverse order. Long or high-resolution videos may temporarily exceed browser memory — trim first if you only need a short segment.

Is my video uploaded during reversal?

No. ffmpeg.wasm processes everything inside your browser — the file never leaves your device.

Does it work on mobile?

Yes. Works on iPhone Safari and Android Chrome without installing any app.

Will the reversed video have the same quality?

The video is re-encoded with the H.264 ultrafast preset, which is visually near-lossless for most use cases.

Reverse Video

Play a clip backwards — reverse video and audio together or video only.

100% client-side · no upload

Video file (MP4, WebM, MOV…)

Settings Reverse mode

Load a file to begin.

How to use

Choose your video file. Keep clips short (under 30 seconds) for best results — reversing loads every frame into memory.
Select the reverse mode: reverse both video and audio, or just one of them.
Click Reverse video. Download the reversed MP4 when processing finishes.

Related tools

More ways to use this tool

Frequently Asked Questions

Why does reversing take so long?: Reversing requires ffmpeg to first read every frame into memory, then write them out in reverse order. Long or high-resolution videos may temporarily exceed browser memory — trim first if you only need a short segment.
Is my video uploaded during reversal?: No. ffmpeg.wasm processes everything inside your browser — the file never leaves your device.
Does it work on mobile?: Yes. Works on iPhone Safari and Android Chrome without installing any app.
Will the reversed video have the same quality?: The video is re-encoded with the H.264 ultrafast preset, which is visually near-lossless for most use cases.

Last updated: 2026-05-20 By jarvisbox