Audio Extractor

Extract Audio from Video: The Ultimate Guide

Sometimes the video isn't what matters—it's the sound. Whether it's a speech, a concert recording, or a podcast episode filmed as a video,UnitMaster Audio Extractor lets you isolate the audio track and save it as a high-quality MP3 file in seconds.

How Audio Extraction Works

Video files (like MP4 or MOV) are "containers" that hold both a video stream (visuals) and an audio stream (sound). Our tool uses a process called demuxing and transcoding. It effectively ignores the heavy visual data and focuses only on processing the audio stream.

By default, we convert your audio to MP3 format at 192kbps. This bitrate offers the perfect balance between crystal-clear sound quality and a manageable file size, suitable for any music player or editing software.

Use Cases for Audio Extraction

• Podcasters: Convert your video interviews into audio episodes for Spotify or Apple Podcasts.
• Musicians: Extract a sample or backing track from a video recording of a session.
• Students: Turn a recorded lecture video into an MP3 so you can listen to it while commuting/walking.
• Transcription: It's much easier to upload a small MP3 file to transcription services than a massive video file.

Supported Inputs

We support a wide range of video inputs, including:

• MP4: The most common video format.
• MOV: Apple's QuickTime format.
• WebM: Common for web-based recordings.
• MKV: High-quality archival format.

Why Choose Client-Side Extraction?

Processing audio requires significant computing power. Most online converters upload your file to a cloud server to process it. This creates two problems: Privacy risk and Wait times.

UnitMaster runs entirely in your browser using WebAssembly. Your CPU handles the extraction. This means your private voice recordings or unreleased music never leave your machine, and you don't need to depend on slow upload speeds.