Extract Audio from Video
Extract a video's soundtrack as MP3 or WAV in your browser. No uploads — ffmpeg.wasm processes the file locally.
🔒 Runs entirely in your browser — nothing is uploadedSave the soundtrack from a video
Sometimes the audio is the most useful part of a video. You may want to save a voice memo from a meeting recording, pull narration out of a tutorial, turn a lecture clip into something you can review on the go or prepare raw sound for a podcast editor. This extractor reads a local media file and creates a standalone MP3 or WAV file that contains the audio track without the video picture.
The workflow is private by design. Instead of uploading your file to a conversion service, the browser loads ffmpeg.wasm and performs the extraction on your device. The input file is written into a temporary in-memory file system, the audio stream is decoded or encoded as requested and the result is downloaded through the browser. Media Tools does not receive the video or the resulting audio.
MP3 for sharing, WAV for editing
MP3 is the best default when you need a smaller file that plays almost anywhere. It uses lossy compression, which greatly reduces size while keeping speech and general listening quality good at typical bitrates. WAV is larger because it stores uncompressed PCM audio, but that makes it a strong choice for editing, transcription workflows or further processing where you want to avoid another generation of lossy compression.
Performance and file size notes
The first extraction may pause while the WebAssembly engine downloads. After that, runtime depends on the length of the media, the chosen output format and your device. Very long videos need more memory because there is no remote server doing the work. If a file fails, try a more common source format or use WAV when MP3 encoding is not accepted by a particular input. Always keep the original until you have checked the downloaded audio.
Encoding details
The video stream is discarded and only the sound is encoded. MP3 output uses the LAME encoder at a constant 192 kbps, which is comfortable for speech and acceptable for most music. WAV output is 16-bit PCM at 44.1 kHz in stereo, so an hour of audio occupies roughly 600 MB, while the same hour as MP3 at 192 kbps is close to 85 MB. Plan for that difference before choosing WAV on a long recording.
Mono sources are converted to two identical channels in WAV, and sources recorded at other sample rates are resampled to 44.1 kHz. The tool also accepts audio files as input, so you can use it to convert a recording to MP3 or WAV, though the audio converter offers more formats. Only the first audio stream is used, so a video with several language tracks will yield the default one.
How to use
- Choose mediaDrop a video or audio-containing file into the tool.
- Pick outputSelect MP3 for compact sharing or WAV for editing.
- ExtractRun the local conversion and download the audio file.