Is my video uploaded?

No. Everything runs in your browser.

Why can I not pick M4A?

Some browsers have no AAC encoder (Firefox on Linux, for instance). WAV always works.

The video has several audio tracks. Which one do I get?

The first (primary) audio track.

It says there is no audio track.

The file has no audio stream mediabunny can read, or the audio uses a codec it does not support.

Audio Extractor

Pull the soundtrack out of a video as WAV, M4A, Ogg or FLAC, in your browser.

Source

Audio

Format

WAV is uncompressed and always works. M4A, Ogg and FLAC need an encoder in your browser; unavailable ones are greyed out.

Runs in your browser; nothing you enter leaves this page.

How it works

What happens

The video is opened with mediabunny, the video track is dropped and the first audio track is written into an audio-only file. When the source audio is already in the format you pick (AAC to M4A, Opus to Ogg), its packets are copied without re-encoding; otherwise it is decoded and encoded again with your browser's WebCodecs encoders.

Which format

WAV is uncompressed 16-bit PCM: large, lossless and opened by everything. FLAC is lossless and about half the size. M4A (AAC) and Ogg (Opus) are small and lossy. Formats your browser has no encoder for are greyed out.

More tools

All 238 tools

Timecode CalculatorAdd and subtract SMPTE timecodes at any broadcast frame rate, drop-frame included, with the frame count and real time.
Subtitle ConverterConvert SRT and WebVTT both ways, shift every cue, and retime between frame rates.
Waveform GeneratorTurn a song or voice clip into a waveform picture, as PNG or SVG, in your colours and size.
Audio NormaliserMeasure a file's loudness in LUFS and bring it to a streaming, podcast or broadcast target, without clipping.