Which audio format should I pick?

MP3 is the universal default — small files, plays everywhere. M4A (AAC) sounds slightly better than MP3 at the same bitrate and is ideal for Apple devices. OGG Vorbis is the open-source choice with great efficiency. WAV is uncompressed PCM, perfect for further editing.

What bitrate or quality is used?

MP3 and M4A are encoded at 192 kbps which is transparent for music and speech. OGG uses quality level 5 (~160 kbps VBR). WAV is 16-bit PCM stereo — the standard editing format.

Will WAV files be very large?

Yes — uncompressed audio at 44.1 kHz, 16-bit, stereo is about 10 MB per minute. Use WAV only when you plan to edit further; pick MP3 or M4A for everyday listening and sharing.

Are the video frames discarded?

Yes. The `-vn` flag tells ffmpeg to drop the video stream entirely. Only the chosen audio codec is muxed into the output container.

Is my video uploaded anywhere?

No. ffmpeg.wasm processes everything locally in your browser via WebAssembly. The file never leaves your device — safe for confidential calls and interviews.

Can I extract audio from formats like MKV or AVI?

Yes — ffmpeg.wasm supports MP4, WebM, MOV, MKV, AVI, FLV, and most other common video containers as input.

Extract Audio — MP3, M4A, OGG, WAV from Video

Extract Audio from Video

Extract the audio track from any video as MP3, M4A, OGG or WAV — entirely in your browser, no upload.

100% client-side · no upload

Video file (MP4, WebM, MOV…)

Load a video file to begin.

How to extract audio from a video

Load a video file — MP4, WebM, MOV, MKV all work.
Pick MP3 for sharing, M4A for Apple devices, OGG for open formats, or WAV for editing.
Click Extract audio and ffmpeg will strip the video stream and encode the audio.
Download the audio file.

Common use cases

Podcast from video interview: Pull the dialogue track to release as an audio-only episode.
Music from concert footage: Save a live performance audio for offline listening.
Lecture notes: Convert a recorded lecture into MP3 for transcription or playback during commutes.
Audio editing source: Export WAV from a video for use as a clean editing master in Audacity, Reaper or Pro Tools.

Related tools: Audio Extractor (MP3/WAV) · Video Muter · Boost Volume · Video Trimmer

常见问题

Which audio format should I pick?: MP3 is the universal default — small files, plays everywhere. M4A (AAC) sounds slightly better than MP3 at the same bitrate and is ideal for Apple devices. OGG Vorbis is the open-source choice with great efficiency. WAV is uncompressed PCM, perfect for further editing.
What bitrate or quality is used?: MP3 and M4A are encoded at 192 kbps which is transparent for music and speech. OGG uses quality level 5 (~160 kbps VBR). WAV is 16-bit PCM stereo — the standard editing format.
Will WAV files be very large?: Yes — uncompressed audio at 44.1 kHz, 16-bit, stereo is about 10 MB per minute. Use WAV only when you plan to edit further; pick MP3 or M4A for everyday listening and sharing.
Are the video frames discarded?: Yes. The `-vn` flag tells ffmpeg to drop the video stream entirely. Only the chosen audio codec is muxed into the output container.
Is my video uploaded anywhere?: No. ffmpeg.wasm processes everything locally in your browser via WebAssembly. The file never leaves your device — safe for confidential calls and interviews.
Can I extract audio from formats like MKV or AVI?: Yes — ffmpeg.wasm supports MP4, WebM, MOV, MKV, AVI, FLV, and most other common video containers as input.