Radar check
What we found when we opened it. Every bar is one fact, with its date.
Last code pushed 29 Sep 2026, 28 days before this check.
Latest release v12.15 on 7 Jan 2025.
Public since October 2019, about 7 years.
17,913 stars and 1,122 forks.
0 commits and 1 new issues in the last 90 days.
76 contributors. 1 pull requests merged in 90 days.
A security policy says how to report a problem. No published security advisories.
How the bars are scored
- Alive. Days since the last code push: a week or less 100, a month 90, three months 70, six months 50, a year 30, eighteen months 15, older 0.
- Releases. Age of the latest GitHub release, on a similar scale; no bar when the project publishes no releases.
- Maturity. Age of the project: eight years 100, five 90, three 70, two 55, one 40, six months 25, younger 10.
- Adoption. Stars on a log scale: 100,000 stars is 100, 10,000 is 80, 1,000 is 60, 100 is 40.
- Activity. Commits in the last 90 days: 300 or more 100, 100 85, 30 65, 10 45, any 25.
- Community. People who have contributed: 100 or more 100, 30 80, 10 60, 5 40, 2 25, one 10.
- Security. A published security policy 80, none 40; published advisories are listed, not scored.
Checked by Repo Radar on 28 Oct 2026 from the repository on GitHub.
In simple English
This library lets your website convert videos and audio clips. It runs entirely inside the person's web browser. You do not need to pay for a video conversion server. Your users do not need to upload huge files to the cloud. Everything happens on their own device. Large files can take a long time and make the browser slow.
What it is
FFmpeg (a large software library for handling video and audio files) compiled to WebAssembly (a way to run fast native code inside web browsers). It provides JavaScript functions to run video commands directly on client machines.
What it is good for
Solo builders who want to offer client-side video trimming, compression, or format conversion directly in a web app without server costs.
Summary (Key Points)from the README
Key features
- Browser media processing: Record, convert and stream video and audio directly inside browsers.
- WebAssembly and JavaScript port: A pure WebAssembly and JavaScript port of FFmpeg.
- npm package: Published on npm as @ffmpeg/ffmpeg.
- MIT license: Released under the MIT License.
- Structured documentation: The docs site covers an introduction, getting started, API reference, FAQ and contribution guide.
- Continuous integration: A CI workflow badge is shown, and the README marks the project as maintained.
- Community chat: A Discord server is available for questions and discussion.
Important
- Experimental stability: The README tags the project with an experimental stability badge, so expect possible breaking changes.
- No install commands in the README: Installation steps are not given here and must be taken from the getting-started docs.
- Sponsorship request: The maintainers ask for sponsorship to keep the project sustainable.
Written by an AI model from the project’s README; not part of the review, and it can be wrong.
- Converts videos directly in the browser without server costs.
- Protects user privacy since files never leave their device.
- Uses the proven reliability of the core FFmpeg project.
- Large files can crash mobile browsers due to memory limits.
- Setup requires familiarity with modern JavaScript bundlers.
- Initial download of the core binary is large and can feel slow.
uploading files to a cloud conversion server
React
- FFmpeg/FFmpeg66k stars
The original command-line tool that runs on servers and local machines rather than inside web browsers.
- mltframework/shotcut16k stars
A mature cross-platform desktop video editor with installers for Linux, macOS and Windows, reading almost any format through FFmpeg.
- spotify/pedalboard6.4k stars
Applies audio effects to recordings from Python, including studio plug-ins, without calling another program.
- iver56/audiomentations2.3k stars
Spoils sound recordings on purpose, 39 ways, so a model trained on them copes with real rooms.
npm install @ffmpeg/ffmpeg @ffmpeg/util