Extract Audio from Video
Save the soundtrack of any video as MP3, M4A, WAV, FLAC, OGG or Opus with bitrate and sample-rate options.
Tool guide
What this tool does
Extract Audio from Video pulls the first audio track out of MP4, MOV, WebM, MKV or AVI files and encodes it in the format you choose. Lossy formats let you set the bitrate, and you can also change the sample rate or mix down to mono. Several videos can be processed in one go.
Sometimes the sound is the only part you need: a recorded talk you want to listen to on a walk, a voice memo captured with the camera app, music for a slideshow, or interview audio to send for transcription. Keeping the video around wastes space and many audio apps will not open it.
This tool uses a WebAssembly build of FFmpeg running in your browser. It discards the picture, takes the first audio stream and encodes it with LAME for MP3, the native FFmpeg AAC encoder for M4A, libvorbis for OGG, libopus for Opus, or writes lossless WAV (16-bit PCM) or FLAC. Nothing is uploaded; the engine itself is fetched once from a CDN and cached.
How to use Extract Audio from Video
- Drop one or more video files onto the upload area or click to browse.
- Choose the Output format. MP3 is the safest choice for compatibility.
- For MP3, M4A, OGG and Opus pick a Bitrate; 192 kbps suits music and 96 kbps is plenty for speech.
- Optionally change Sample rate or Channels (Mono halves the size of speech recordings).
- Click Extract audio and wait for each file to finish.
- Play the results in the page and download them individually or as a ZIP.
Tips for better results
- Choose WAV or FLAC if you will edit the audio further, so you do not stack lossy compression twice.
- Opus gives the best quality per kilobit for speech and is ideal for voice notes and podcasts played in modern apps.
- Phone videos usually carry 48 kHz AAC audio; M4A at a similar bitrate keeps quality closest to the source.
- For transcription services, 16 kHz or 22.05 kHz mono is usually enough and makes uploads much smaller.
Common use cases
- Turning a recorded lecture or webinar into an MP3 for offline listening.
- Getting a clean WAV of an interview for editing in an audio workstation.
- Saving the music from your own video project for reuse.
- Preparing audio for a speech-to-text service.
Common mistakes to avoid
- Raising the bitrate above the source: converting 128 kbps audio to 320 kbps MP3 makes a bigger file with no extra quality.
- Picking FLAC for sharing; most messaging apps and some phones will not play it inline.
- Trying a video with no audio track, which produces an error message rather than an empty file.
Frequently asked questions
Which audio track is extracted?
The first audio stream in the file. Most videos have only one. Files with several language tracks will give you the default first track.
Is MP3 or M4A better?
At the same bitrate AAC in M4A usually sounds slightly better than MP3, especially below 128 kbps. MP3 plays on more old devices and car stereos.
Does it work with large files?
Yes, within the memory available to your browser. Audio extraction is lighter than video re-encoding, so files of several hundred megabytes usually work on a laptop.
Is my video uploaded?
No. The conversion runs on your device with FFmpeg compiled to WebAssembly. Only the engine is downloaded from the jsDelivr CDN once.
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