Video to MP3 Converter
Convert video to MP3 or WAV in your browser: MP4, MOV, WebM and more, 4 bitrate options, instant preview. No upload, no signup, no watermark.
Need the audio track from a video file — a lecture, an interview, a podcast episode you recorded on video? Drop the file in and save the sound as MP3 or WAV without installing ffmpeg or uploading the video to a converter site.
The conversion happens locally with WebCodecs, so even large files work: a one-hour recording does not have to sit in an upload queue, and it never touches someone else's server. Choose the bitrate that fits your use — voice notes compress well, music deserves the higher end.
100% in-browser · no upload · no signup · nothing you paste or drop here leaves your device
Audio Extractor
Extract audio tracks from video files as MP3 or WAV — 100% in-browser.
Upload a video and extract its audio as MP3 or WAV
Audio extraction runs entirely in your browser using ffmpeg.wasm. Your video file is never uploaded to any server.
How audio extraction works — illustrated
A video file is a container (MP4, MKV, MOV…) that bundles one or more compressed streams — typically an H.264/HEVC video track and an AAC/MP3 audio track. Extraction demuxes the container: it reads the container's packet structure, pulls out only the audio stream, and re-encodes it into a standalone file. This tool runs ffmpeg compiled to WebAssembly, so the whole pipeline happens in your browser. The two output paths are -vn with libmp3lame (MP3, lossy, 128–320 kbps) and pcm_s16le (WAV, uncompressed 16-bit PCM at 44.1 kHz stereo) — the bitrate you choose trades file size against fidelity.
ffmpeg.wasm splits the container into its constituent streams, discards the video with the -vn flag, and re-encodes the audio as MP3 (libmp3lame) or WAV (PCM). A 180 MB 4K clip can shrink to a ~17 MB MP3.
Priya films a 12-minute product launch on her phone as a 4K MOV. She wants the voiceover as a standalone MP3 to reuse as the audio track of a podcast episode.
- Drop the video:A 180 MB 4K MOV lands in the dropzone and passes the 500 MB preflight check
- Pick output + bitrate:She selects MP3 at 192 kbps — the recommended balance for a clean spoken-word track
- Extract in-browser:ffmpeg.wasm demuxes the container and encodes the voiceover: 180 MB video becomes a ~17 MB MP3, roughly 90% smaller
- Download & reuse:She saves trial_audio.mp3, drops it into her podcast host, and the on-page player confirms the full 12-minute track
About this video to MP3 converter
This page covers extract audio from video online free, mp4 to mp3 converter, convert video to audio, rip audio from video — all the same underlying task as video to MP3 converter. The tool above is FreeToolHub's audio extractor embedded in full: every feature works right here, and nothing you process is uploaded to any server.
Frequently asked questions
How do I convert a video to MP3 without installing software?
Drag the video into the tool, pick MP3 and a bitrate (128 kbps is fine for speech, 256+ for music), and click convert. The audio track is extracted and encoded locally in your browser, then downloads directly — the video file never leaves your computer.
Which video formats are supported?
Anything your browser can decode: MP4, MOV, WebM, MKV in most cases, and AVI depending on codec. The converter reads the audio track and re-encodes it to MP3 or WAV; video resolution and length do not matter to the output quality.