Browser-Side Video Audio Extractor
Extract the audio track from a local video and export it as M4A/AAC or WebM/Opus. FFmpeg runs in your browser after you start extraction.
Drop video here or click to upload
Choose a video that contains an audio track.
Max file size: 200MB
No video uploaded
Mobile processing guidance
On mobile, start with a short video under 50MB that clearly contains an audio track.
Max 200MB in this browser version.
Audio extraction still loads FFmpeg and can fail when the source is very large or codec support is limited.
If extraction stalls, stop and retry with a shorter clip or lower bitrate output.
AAC audio in an M4A container for broad compatibility.
Output
M4A
Bitrate
128 kbps
Engine
ffmpeg.wasm
Next step
Choose a short video with an audio track first. On mobile, start under 50MB before trying larger clips.
FFmpeg is designed to run in the browser after you start extraction, based on the current public implementation. Large files, missing audio tracks, or unsupported codecs may fail in browser memory.
A video audio extractor pulls the audio track out of a video file.
This first browser-side version exports M4A/AAC or WebM/Opus from videos under 200MB.
Videos with audio
The source must include an audio track for extraction to succeed.
Short clips
Smaller files finish faster and are more reliable in browser memory.
Example
Upload a short MP4 interview, choose M4A output at 128 kbps, and download the extracted audio track.
Assumption
The video contains at least one audio track and is under 200MB.
Limitation
This tool does not separate speakers, remove noise, transcribe speech, or preserve multiple audio tracks as separate files.
Confirm an audio track exists
A silent video or an unsupported audio codec cannot produce a useful extraction.
Choose the listening target
M4A/AAC is the broader handoff choice; WebM/Opus fits browser-native playback and modern web workflows.
Know the track rule
Only the first audio stream is selected, so multilingual or commentary tracks need a tool with explicit stream selection.
Using a silent source
Extraction fails or produces no useful output when the source video has no audio track.
Expecting transcription
This tool extracts an audio file only. It does not generate text, captions, or speaker labels.
Choosing bitrate too high
A high bitrate can create a larger audio file without audible benefit for voice recordings.
Podcast prep
Pull audio from a recorded video conversation.
Voice notes
Extract spoken audio from a screen recording.
Editing handoff
Create an audio-only file for review or further editing.
Browser-side extraction
Extract audio from unpublished video with browser-side processing for this tool.
Not a lossless stream copy
The selected track is re-encoded as AAC in M4A or Opus in WebM at 64, 96, 128, or 160 kbps.
Size example
A 10-minute 128 kbps audio track is roughly 9.4MB before container overhead, so use Audio File Size Calculator to plan longer exports.
What is not included
Video, subtitles, chapters, extra audio streams, speaker separation, noise cleanup, and transcription are not part of this output.
How is the audio extracted?
The selected video is processed in the browser with ffmpeg.wasm based on the current public implementation. Avoid sensitive media unless you have reviewed the implementation.
Which audio formats are supported?
The first version exports M4A/AAC or WebM/Opus audio.
What happens if the video has no audio?
FFmpeg will report that no audio track is available. Choose a source video that contains an audio track.
What file size should I use?
Use videos under 200MB for this browser-side version. Smaller clips are recommended on mobile devices.
Which audio track is extracted from a multi-track video?
The current implementation maps the first audio stream only. It does not expose a language or track selector for alternate audio streams.
How is the audio extracted?
The selected video is processed in the browser with ffmpeg.wasm based on the current public implementation. Avoid sensitive media unless you have reviewed the implementation.
Which audio formats are supported?
The first version exports M4A/AAC or WebM/Opus audio.
What happens if the video has no audio?
FFmpeg will report that no audio track is available. Choose a source video that contains an audio track.
What file size should I use?
Use videos under 200MB for this browser-side version. Smaller clips are recommended on mobile devices.
Which audio track is extracted from a multi-track video?
The current implementation maps the first audio stream only. It does not expose a language or track selector for alternate audio streams.
Suggested workflow
Build a video audio workflow
Inspect the source, extract audio, then mute or compress the video copy if needed.