How-To

Extract Audio from Video Files

April 16, 2025·4 min read

Sometimes you only need the audio from a video: a podcast recorded as video, a lecture you want to listen to on the go, or a music track from a concert video. Extracting audio from video is a straightforward process that can be done in seconds with the right tools. Here is how to convert any video to MP3 or other audio formats.

How audio extraction works

Video files like MP4, MKV, and MOV contain separate audio and video streams multiplexed together. Audio extraction separates these streams and outputs just the audio portion. If the audio is already encoded as AAC or MP3 inside the video container, extraction can be done without re-encoding, preserving original quality. Otherwise, the audio is transcoded to your chosen format.

Choosing the right audio format

MP3 is the most universally compatible audio format and works on every device and player. Choose 128 kbps for voice content like podcasts and lectures, or 256-320 kbps for music. If you want higher quality, consider FLAC for lossless audio or AAC for a good balance of quality and file size. WAV gives you uncompressed audio but produces very large files.

Converting with SquishConvert

Upload your video file to SquishConvert, select MP3 (or any audio format) as the output, choose your bitrate, and click Convert. Our servers handle the processing using FFmpeg, so even large video files are converted quickly. The original video is deleted immediately after processing.

Legal considerations

Extracting audio from your own videos, personal recordings, and content you have rights to is perfectly legal. Be aware that extracting audio from copyrighted content like music videos or movies for redistribution may violate copyright law. Always ensure you have the right to use the audio content you extract.