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FFmpeg Online — Run Commands in Your Browser

Run real ffmpeg commands on your video, audio or image — no install.

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Pick a command

Start from a preset, then edit it however you like

Current command

ffmpeg -y -i input.mp4 -c:v libx264 -crf 28 -preset veryfast -c:a aac -b:a 128k output.mp4

Filenames like input.mp4 are matched to the files you add — you do not have to rename anything. Everything runs inside this tab; no file is uploaded.

Run it here

Add your file and run the command in your browser — nothing is uploaded

Drop a file here

Video, audio or image — up to 512 MB, processed locally with ffmpeg.wasm

Input files this command needs

  • input.mp4→ add a file above

The first run downloads the ffmpeg WebAssembly core (~32 MB) and then caches it. Encoding in the browser is slower than a native install, so keep clips short for heavy re-encodes.

About the FFmpeg Online — Run Commands in Your Browser

A working ffmpeg command line in the browser. Drop in a video, audio file or image, type or pick a command, press Run and download the output. Powered by ffmpeg.wasm, so your files never leave your device.

Examples

Compress a clip

clip.mp4 + compress preset

Output

output.mp4, smaller file, downloadable

Extract audio

clip.mp4 + extract audio preset

Output

output.mp3

Keyboard shortcuts

  • Copy the main outputCtrl / ⌘ + Shift + C
  • Download the resultCtrl / ⌘ + S
  • Share this toolCtrl / ⌘ + Shift + S
  • Reset the inputsAlt + R
  • Open the tool search paletteCtrl / ⌘ + K

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Frequently asked questions

Read more

Version 1.0.0 · Updated 2026-08-14 · Runs entirely in your browser