Extract the audio from any video
Lectures, interviews, voice memos recorded as video, music in a screen recording — sometimes you only need the sound. This tool strips the video track and saves the audio as a high-quality MP3 that plays everywhere.
It accepts MP4, WebM, MOV, MKV and AVI files, and the conversion runs entirely in your browser using WebAssembly — your video is never uploaded anywhere, which matters for private recordings and meetings.
How it works (and what to expect)
Drop a video above and press Extract. The first use downloads the conversion engine (about 31 MB, cached afterwards), then audio is extracted at roughly real-time speed — a 3-minute video takes on the order of a minute. For very long recordings, trim the video first and extract just the part you need.
Unlike most online converters, FileLark never uploads your files to a server. The conversion runs entirely inside your browser using modern web technology, which means it works offline once the page has loaded, there are no file size queues or daily upload limits, and your images can never be stored, scanned, or leaked — they simply never leave your device.
Audio quality
The MP3 is encoded at a high variable bitrate (roughly 190 kbps), which is transparent for speech and very good for music. Remember that extraction can never sound better than the source — a video with compressed 96 kbps audio yields an MP3 of that same underlying quality.