FFmpeg Online Converter

Language/语言: English 中文

Introduction

Convert video and audio formats easily. Supports mp3 to wav, ogg to mp3, mp4 to gif, webm to mp4, mp4 to mp3, svg to png, etc.

Usage: Configure parameters if needed, then select a file. Transcoding starts automatically once the file is chosen.

Your files will be processed locally, ensuring safety and privacy. Use your browser to transcode; the speed depends on your computer's performance. It's recommended for converting short videos or audio files only. For large videos, use professional software for transcoding.

Click to switch to Expert Mode

This project is open source on GitHub (Welcome to provide suggestions and feedback through issues)

Other tools: https://tool.gcc.ac.cn/

Transcoding Parameters

Thread Mode: Video Bitrate: (Note: Leave blank for image and audio files) Audio Bitrate: (Note: Leave blank for image files) Output Filename: (Note: The format is determined by the file extension. Do not use the same name as the selected file.)

Start Transcoding

Select File

System Output

Loading FFmpeg, please wait...

Downloading: {{currentLoadingUrl}}

FAQs:

How to convert MP4 to GIF in browser without uploading?

Enter "output.gif" as Output Filename, then select an MP4 file using the Select File button. The conversion starts automatically in your browser after selection. The video is processed locally using FFmpeg compiled to WebAssembly, and the output GIF is generated on your device. When finished, the result is saved to your device via a browser download. No file is sent to any server.

How to extract audio from video?

Enter "output.mp3" as Output Filename, then select an video file using the Select File button. The conversion starts automatically in your browser after selection. The video is processed locally using FFmpeg compiled to WebAssembly, and the output audio (mp3 file) is generated on your device. When finished, the result is saved to your device via a browser download. No file is sent to any server.

Why FFmpeg Online Converter?

This tool is powered by FFmpeg, an industry-standard open-source multimedia engine used for video and audio processing. It runs entirely in your browser via WebAssembly, meaning your files are not uploaded to any server and stay on your device.

Why WebAssembly (WASM) makes local conversion secure?

WebAssembly (WASM) allows high-performance code such as FFmpeg to run directly inside the browser. All processing happens locally, meaning your files never leave your device. This reduces privacy risks and avoids server-side uploading, while still enabling fast media transcoding.