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Extract Audio from Video

Convert MP4, MOV, WebM, AVI or MKV to MP3, WAV or OGG — free, fast, and entirely local. Your video never leaves your device.

Choose the file type you want to download.

Leave End blank to extract to the end of the video.

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Free Audio Extractor — No Upload, No Sign-Up, Works in Your Browser

Most online audio extractors upload your entire video to a remote server, process it in a queue, and send the audio back. RizCraft works entirely differently: FFmpeg is compiled to WebAssembly and runs locally inside your browser. Your video file never leaves your computer. That means extraction is fast, completely private, and free — no account, no watermarks, no file-size quotas imposed by a server.

How to extract audio from a video in 3 steps

  1. Select your video. Drop an MP4, MOV, WebM, AVI, or MKV file into the tool, or click to browse. Any format your browser can feed to FFmpeg will work.
  2. Choose a format. Pick MP3 for everyday sharing and transcription, WAV for lossless editing and archiving, or OGG for open-source and web playback.
  3. Extract and download. Hit Extract Audio. FFmpeg processes the file on your device — no upload queue — and the audio downloads straight to your computer.

Need only a clip? Expand the Trim audio option, enter a start and end time in seconds, and only that range is extracted.

Supported input formats

The tool accepts all common video containers, including MP4, MOV (including iPhone recordings), WebM, AVI, and MKV. Less common formats like FLV, 3GP, and TS also work as long as your browser can pass them to FFmpeg. The file size is limited only by your device's available memory — not by a server quota.

MP3 vs WAV vs OGG — which should you choose?

MP3 is universally supported — every phone, car stereo, media player, and podcast platform accepts it. It compresses audio efficiently, so files stay small without audible loss for most content. Choose MP3 when you want to share a clip, upload to a podcast, or feed audio to a transcription app.

WAV stores audio in uncompressed PCM format. There is no re-encoding step, so the extracted audio is bit-for-bit identical to the original stream. Choose WAV when you plan to edit the audio in a DAW, master a track, or archive a recording for long-term use.

OGG (Vorbis) is an open, patent-free format that works natively in modern browsers and many open-source players. Choose OGG when file size matters and you are targeting a web or Linux environment.

Why local conversion matters

When your file never leaves your device, sensitive recordings — board meetings, legal interviews, medical notes, personal voice memos — stay private by default. There is no server-side processing timeout, no queue to wait in, and no risk of your data being retained after processing. The tool works offline once the WebAssembly engine is cached in your browser.

Common use cases

  • Podcasters: Grab an interview recorded over Zoom or a live event and get the MP3 ready to edit in seconds.
  • Transcribers: Extract a clean audio file from a lecture or meeting, then drop it into a transcription app without dragging a multi-gigabyte video around.
  • Video editors: Pull a music track or sound effect from a reference video to reuse in your timeline.
  • Educators & trainers: Separate the voice-over from a screen recording so you can attach it to an updated visual without re-recording.
  • Archivists: Save the audio from home movies, event footage, or old recordings as a standalone audio file.

Frequently Asked Questions

Which video formats are supported?
MP4, MOV, WebM, AVI, and MKV are the most common supported input formats. Less common containers like FLV, 3GP, and TS also work in most cases. The file is processed locally by FFmpeg WebAssembly, so compatibility is broad.
Is the tool completely free?
Yes. No account, no subscription, no watermarks. The tool runs entirely in your browser — there is no server cost for file processing, which is why it can stay free.
Does my video get uploaded to a server?
No. Everything is processed directly inside your browser tab — your video file is never transmitted to any server. Processing works even if you go offline after the page has loaded.
Which audio format should I choose?
MP3 is the best default — it plays everywhere and keeps file size small. Choose WAV if you need uncompressed audio for editing or archiving. Choose OGG for open-source web projects.
Can I extract just a section of the audio?
Yes. Click Trim audio (optional) to reveal Start and End fields. Enter the timestamps in seconds. Only the audio between those points will be extracted. Leave End blank to extract through to the end of the video.
How large a video file can I process?
There is no server-side file size limit. The practical limit is the memory available in your browser tab — typically 1–4 GB on a modern device. Very large 4K or multi-hour files may be slow or require more RAM than is available.
Will the audio quality be reduced?
The extracted audio preserves the quality of the original video's audio stream. WAV output is lossless. MP3 and OGG use lossy compression, but the default codec settings retain high fidelity for voice, music, and general-purpose audio.
Can I extract audio from an iPhone MOV video?
Yes. MOV is the default format for iPhone recordings and is fully supported. Simply drop your MOV file into the tool and choose your desired output format.
Can I extract audio from a YouTube video?
No. You must upload a local video file. Downloading or extracting audio from YouTube videos is against YouTube's Terms of Service. Use only video files you own or have permission to use.