kittokit
EN
Runs local · no upload

Video to Audio Converter

Pull the audio track from any video, right in your browser.

Drop video files here

or click to select — up to 10 files, each up to 2 GB

MP4 · MKV · WebM · MOV · AVI · WMV · FLV · 3GP · TS · MPEG

How It Works
  1. 01

    Paste text or code

    Paste your content into the input field or type directly.

  2. 02

    Instant processing

    The tool processes your content immediately and shows the result.

  3. 03

    Copy result

    Copy the result to your clipboard with one click.

Privacy

All calculations run directly in your browser. No data is sent to any server.

Extract the audio track from MP4, MKV, WebM, MOV, AVI and other video formats — as MP3, WAV, AAC/M4A, OGG, FLAC or Opus. Everything runs via WebAssembly directly in your browser: no upload, no sign-up, no file leaves your device.

01 — How to Use

How do you use this tool?

  1. Drop video files here or click to select — up to 10 files, each up to 2 GB
  2. Choose your output format: MP3 or Opus for speech and podcasts, WAV or FLAC for lossless quality, AAC or OGG as a compact all-purpose format
  3. Optionally adjust bitrate, sample rate, and channel count
  4. Start extraction and download files individually once done

What does this tool do?

This converter extracts the audio track from video files entirely in your browser. You receive a separate audio file without video — ideal for extracting recordings, podcasts, lecture content, or music tracks from video files.

Supported input formats: MP4, MKV, WebM, MOV, AVI, WMV, FLV, 3GP, TS, M2TS, MPEG, OGV, VOB. Output as MP3, WAV, AAC/M4A, OGG, FLAC or Opus.

Which output format should you choose?

MP3 (MPEG-1 Audio Layer III) is the most universal format and works on virtually every device. It compresses the recording with a small quality trade-off. Great for podcasts, audiobooks, and interviews.

WAV (Waveform Audio File Format) stores audio data uncompressed — quality exactly matches the original audio track. File sizes are significantly larger than MP3. Useful when you want to edit the file further or load it into a DAW.

AAC (Advanced Audio Coding) / M4A delivers slightly better quality than MP3 at the same bitrate. Widely used in Apple ecosystems and works on Android and Windows too.

OGG (Vorbis) is an open format with good quality, especially suited for web applications that cannot pay MP3 licensing fees.

FLAC (Free Lossless Audio Codec) is lossless and compressed — smaller than WAV but without quality loss. The ideal compromise for archiving purposes.

Opus is the most modern format, offering excellent speech quality at very low bitrates. Ideal for voice recordings, video conferences, and streaming.

How does the conversion work and are my files secure?

Since no upload occurs, your video data cannot be intercepted or stored. Files with sensitive content — meetings, personal recordings, confidential interviews — remain completely on your device.

No analytics software is started, no usage data is collected. The converter works entirely via WebAssembly and also runs fully offline once the page has been loaded.

Common use cases

  • Podcast creation: Convert a video interview recording into an MP3 episode file
  • Lecture notes: Convert university video recordings into more manageable audio files
  • Music extraction: Export live concert recordings to WAV or FLAC for further editing
  • Speech-to-text: Extract an audio file for a transcription tool
  • Archiving: Losslessly preserve audio tracks from digitized video tapes as FLAC

Frequently Asked Questions

The most common questions about usage, formats, and privacy:

Are my videos uploaded to a server?

No. All processing happens locally in your browser. The video file is never sent to a server and never leaves your device.

Which video formats are supported?

Primarily MP4, MKV, WebM, MOV and AVI. Additionally WMV, FLV, 3GP, TS, M2TS, MPEG, OGV and VOB. If a format cannot be processed, an error message appears in the file row.

What is the difference between MP3 and WAV?

MP3 is compressed and lossy — ideal when small file sizes matter. WAV is uncompressed and lossless, preserving the exact original audio quality. Choose WAV or FLAC when you want to edit the file further in a DAW.

How many files can I convert at once?

Up to 10 files at a time. They are processed sequentially, with an individual progress bar shown per file.

What happens with very large video files?

Files over 500 MB trigger a warning because large files require significant memory. Files over 2 GB are rejected to prevent browser crashes.

Is the audio quality preserved?

Yes — when you choose WAV or FLAC the audio track is extracted losslessly. For MP3, Opus or OGG a lossy re-encode occurs. AAC/M4A is encoded at 192 kbps, which is sufficient for both speech and music.

Other tools from the kittokit ecosystem that pair well:

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