Extract Audio from Video — Download as WAV

How Audio Extraction Works

Video files are containers — formats like MP4, WebM, and MOV don't hold a single stream of data, they multiplex separate video and audio streams together into one file, along with metadata describing how to play them back in sync. Extracting audio is fundamentally a demuxing operation: the tool decodes the container, locates the audio stream, and pulls it out independently of the video stream, which gets discarded. This is different from converting a video to an audio format like MP3 in one step — here the tool decodes whatever audio codec the video used internally (commonly AAC in MP4, or Opus/ Vorbis in WebM) and re-encodes it as lossless PCM WAV, so the output isn't degraded further by an additional lossy compression pass.

People reach for audio extraction for a range of practical reasons: pulling narration out of a screen recording to clean up or repurpose separately, grabbing the audio from an interview or webinar recording for transcription, isolating a song from a downloaded video clip, or preparing a video's dialogue track for a podcast feed. In each case, the alternative — opening a full video editor just to export an audio-only track — is far more overhead than the task requires. This tool does the one thing needed: strip the audio, keep it lossless, and hand you a file ready for the next step.

The WAV output is deliberately lossless and uncompressed rather than an MP3 or AAC, because stacking a second lossy codec on top of whatever the video's original audio track used would only degrade quality further. If your workflow specifically needs a smaller or more portable format afterward, pair this tool with the MP3 Converter or the Compress Audio tool to shrink the extracted file down once you've confirmed the extraction itself sounds correct.

One consequence of the lossless, uncompressed WAV output is file size — a five-minute audio track at 44.1 kHz stereo runs roughly 50 MB, considerably larger than the original video's audio-only footprint, since video codecs typically compress their audio streams. That tradeoff is intentional: it keeps the extraction step itself from introducing any additional quality loss, leaving compression as a separate, deliberate choice you make afterward if file size matters for your use case.