Extract Audio
Get the audio track from your video as MP3, WAV or AAC. Processed locally.
Drop your file here
Related tools
Extract audio from a video in your browser
Filzy lets you extract audio from a video to pull the audio track out of a video as a separate file, useful for podcasts, music, or analysis. The tool runs ffmpeg.wasm directly inside your browser tab, so your video file is decoded and re-encoded on your CPU without ever uploading to a server. The output is an audio file (M4A or MP3) containing only the audio track, with no quality loss when the source codec matches. Filzy supports MP4, MOV, WebM as input. The free tier processes 3 files without an account; signing up unlocks unlimited use, with no daily cap and no watermark.
Files stay on your device
Decoding, processing, and re-encoding all happen in a Web Worker via ffmpeg.wasm. The video bytes never reach a server, no temporary copy is stored anywhere.
Local CPU speed
WebAssembly delivers near-native performance on your CPU. A 5-minute clip typically processes in 1 to 3 minutes on a modern laptop, depending on the operation.
No upload, no daily cap
Skip the multi-minute upload that plagues server-based tools. The bottleneck moves to your CPU, where you have full control. No daily limit, no watermark.
How to extract audio from a video with Filzy
- 1
Drop your video
Drag the file in, or click to select. Filzy accepts MP4, MOV, WebM files. The practical size limit is your device memory; multi-gigabyte files work on most modern laptops.
- 2
Filzy extract audio froms the video locally
ffmpeg.wasm decodes the video, applies the operation, and writes the result. Progress is shown frame by frame in the browser. The output is an audio file (M4A or MP3) containing only the audio track, with no quality loss when the source codec matches.
- 3
Download the result
Save the file, or send it straight to another Filzy tool such as Compress, Trim, or Add watermark. Files chained between Filzy tools also stay local.