--- title: "Extract Audio from Video - Free Private Tool | CanDoYa" description: "Extract audio from video as MP3, M4A, or WAV with private in-browser processing, preview, bitrate controls, and no file upload or watermark." url: https://candoya.com/tools/extract-audio-from-video/ locale: en type: browser-tool --- # Extract Audio from Video Category: Social & Creator ## How can I extract audio from a video? Choose a video, select MP3, M4A, or WAV, and start the extractor. It separates the first audio track and creates a new audio-only file you can preview and download. Processing happens locally in your browser, so private recordings are not uploaded to a conversion server. This extractor loads a WebAssembly build of FFmpeg only when you start. It maps the first audio stream and leaves out the picture, subtitles, chapters, attachments, and source metadata. MP3 uses LAME, M4A uses AAC, and WAV uses uncompressed 16-bit PCM. MP3 and M4A are lossy formats, so 192 kbps is a sensible default for speech, meetings, and general listening. WAV avoids lossy encoding but creates a much larger file. Browser memory makes this tool best for short or moderate videos. Very long 4K files, damaged media, encrypted video, or unusual professional codecs may need a desktop editor. ## How to use it 1. **Choose a video** - Drop an MP4, MOV, WebM, MKV, AVI, MPEG, or another common video file into the extractor. 2. **Pick an audio format** - Choose MP3 for broad support, M4A for efficient AAC audio, or WAV for an uncompressed editing file. 3. **Extract locally** - Select a bitrate when using MP3 or M4A, then keep the tab open while the browser processes the audio track. 4. **Preview and download** - Listen to the result in the browser when supported, then download the audio-only file to your device. ## Who it's for - **Podcasters and interviewers** can pull a spoken recording from camera footage before editing or transcription. - **Students and researchers** can save lecture or field-recording audio for listening without the video picture. - **Editors** can create a WAV reference track or a compact MP3 and M4A copy for another workflow. - **Remote teams** can separate sound from confidential meeting clips without uploading the source to a file converter. ## Expert note Extracting and converting are related but different steps. FFmpeg first demuxes the video's audio stream from its container, then this tool decodes and re-encodes that stream for the chosen output. Re-encoding makes the result predictable across source codecs, but a WAV output can be far larger than the compressed source. ## Frequently asked questions ### Is my video uploaded when I extract its audio? No. The selected video is read from a local browser file object and processed by a WebAssembly media engine in this tab. The engine code downloads on first use, but your source video and extracted result are not sent to that server or stored in a CanDoYa account. ### Is this audio extractor free? Yes. You can extract, preview, and download MP3, M4A, or WAV audio without an account, subscription, credit limit, or watermark. The practical limits are your device's memory and speed, with a conservative file cap from 100 MB on mobile to 500 MB on high-memory desktops. ### Which video formats can I use? The tool accepts common containers including MP4, MOV, WebM, MKV, AVI, MPEG, WMV, MTS, and related formats. A container can still hold an unusual, damaged, or encrypted audio codec that this WebAssembly build cannot decode, so no browser extractor can guarantee every file. ### Should I choose MP3, M4A, or WAV? Choose MP3 for the widest playback support, M4A for efficient AAC audio on phones and Apple workflows, or WAV when you need uncompressed PCM for editing. WAV files are much larger. For speech and everyday listening, 192 kbps MP3 or M4A is usually a practical starting point. ### Does extracting audio reduce sound quality? MP3 and M4A re-encode the source with lossy compression, so some information is discarded. A higher bitrate keeps more detail but creates a larger file. WAV writes uncompressed 16-bit PCM, which avoids another lossy encode but cannot restore quality already removed from the source recording. ### What if the video has more than one audio track? This tool extracts the first audio track only. That is usually the main soundtrack, but multilingual films, screen recordings, and edited projects can contain alternate tracks. Use a desktop media editor when you need to inspect stream labels and choose a different language or commentary track. ### Why can extraction fail or take a long time? The browser must hold the source and output in memory while it decodes and encodes audio on your device. Large files, low-memory phones, damaged media, missing audio tracks, and uncommon codecs are the hardest cases. Keep the tab open, close heavy tabs, or use desktop software for large projects. ## Related tools - [Video Converter](https://candoya.com/tools/video-converter/) - [Video Trimmer](https://candoya.com/tools/video-trimmer/) - [Video Compressor](https://candoya.com/tools/video-compressor/) - [Audio to Text](https://candoya.com/tools/audio-to-text/) - [Video to GIF](https://candoya.com/tools/video-to-gif/) --- *Markdown edition of , published for AI agents and other automated readers. Index of key pages: .*