Reverse video
Play a clip backwards. Caps long files at 20 seconds.
Runs in this tab. The file stays here.
This runs in your browser. Nothing is uploaded. Longer clips take longer here than they would on a fast server — that is the trade-off for not sending the file.
About Reverse video
Plays a clip backwards with FFmpeg reverse filters in the browser. Long files are capped at 20 seconds.
Reversing a file means holding the whole decoded stream. A two-hour lecture will not fit. I cut at 20 seconds rather than freeze the tab and pretend it is working. Audio is reversed too when the filter graph allows it. Trim first if you only care about the ending.
Reverse video runs FFmpeg compiled to WebAssembly in this tab. The first visit of a video or audio tool fetches about 30 MB from this origin; after that it can stay cached. Your file is not in that download and is not POSTed anywhere. GPL FFmpeg, single-thread, same origin, no COEP experiment. That is the same encoder as convert, trim, and compress — this page is just a different argument list, with the same honesty about what the core cannot mux.
You can open the network panel and watch. Encoding a long clip on a phone is slow because it is your CPU. That wait is the trade for not handing the file to a converter you found in a search ad. Reverse and boomerang cap duration so a two-hour file does not try to live backwards in RAM. If a codec inside a familiar extension is missing from this core, you get an error rather than a silent broken file. Subtitle generation and stem splitting are not here; I will not pretend they are. Missing is better than a watermarked demo.
How to use Reverse video
- 1Drop a short clip.
- 2Click Reverse. Wait. Download.
What it won't do
- 20 second cap.
- Re-encodes; not a stream copy.
Common questions
Why is reverse capped at 20 seconds?
The reverse filter is memory-heavy. A long clip will crash a phone tab. Trim first if you need a specific ending played backwards.
Does reverse upload the clip?
No. Local FFmpeg. Same encoder as convert.
Is the audio reversed as well?
Yes, via areverse, when an audio stream exists.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation