Audio Extractor — Pull MP3/WAV from Video
Extract the audio track from any video — MP4, MOV, WebM, AVI — and download as MP3 or WAV. Powered by ffmpeg.wasm in your browser, your video never uploads.
How to extract audio from a video file in your browser
- Drop your video. Drag and drop an MP4, MOV, WebM, AVI, MKV, or other ffmpeg-supported video into the upload area. First-time use loads ffmpeg.wasm (~25 MB, cached after).
- Pick output format. Choose MP3 192 kbps (good quality, small file, universal compatibility), MP3 320 kbps (high quality), or WAV (lossless, large, ideal for editing).
- Wait for ffmpeg to process. Processing happens in your browser. A 1-hour video usually takes 30–90 seconds depending on your device.
- Download the audio file. Click Download to save the extracted .mp3 or .wav. The original video file is unchanged.
Frequently Asked Questions
- Is my video uploaded to a server?
- No. Extraction runs entirely in your browser using ffmpeg.wasm — a WebAssembly port of ffmpeg. Your video never leaves your device.
- What video formats are supported?
- Anything ffmpeg supports: MP4, MOV (iPhone), WebM, AVI, MKV, FLV, 3GP, M4V, and more. The video container does not matter — we read the audio stream directly.
- Why pick MP3 vs WAV?
- MP3 is compressed (smaller file) and plays everywhere — pick this for podcasts, music, sharing. WAV is lossless (larger file, perfect quality) — pick this if you plan to edit the audio further or feed it to a transcription model.
- What does bitrate (192 vs 320 kbps) mean?
- Higher bitrate = more audio data per second = better quality + larger file. 192 kbps is transparent for speech/podcasts. 320 kbps is near-CD quality for music. Most listeners cannot hear a difference above 192 kbps.
- Is there a length limit?
- No hard limit, but ffmpeg.wasm needs to hold the video in memory. Videos up to ~2 hours work on most laptops. For >2-hour videos, use a desktop ffmpeg.
- Does it work on mobile?
- Yes on modern iPhones (iOS 16+) and Android devices with 4 GB+ RAM. Older devices may run out of memory on long videos.
Use Cases
- Extract podcast audio from a YouTube screen-recording
- Pull the soundtrack out of a movie clip for editing
- Save a lecture's audio from a Zoom MP4 recording
- Get the audio out of an iPhone .MOV for sharing
- Prep a meeting recording for transcription (extract audio, send to a transcriber)