Extract Audio from Video as MP3, M4A, or WAV

Choose MP3 when you need a reasonably small file for listening, sharing, transcription input, or broad playback support. The tool removes the video stream and encodes only the audio. Because MP3 is lossy, converting an already compressed soundtrack adds another encoding generation rather than restoring quality missing from the source.

Choose M4A when the source has AAC audio and you want to avoid that extra conversion. When AAC is detected, the tool copies the audio stream into an M4A file without quality loss. If the source track uses another codec, it is converted to AAC at 192 kbps instead, so the no-quality-loss statement applies only to detected AAC input.

Choose WAV when an editor or workflow expects uncompressed audio. The output uses signed 16-bit PCM. WAV is much larger than MP3 or M4A because it stores uncompressed samples, and it cannot improve a compressed source; it only avoids another lossy output codec.

The available MP3 choices are 128, 192, 256, and 320 kbps. Bitrate controls how much data the encoder assigns per second. A lower value usually makes a smaller file, while a higher value allocates more data. The default 192 kbps is a practical middle option for mixed speech and music.

Use 128 kbps when size matters more and the source is mainly speech or casual listening. Select 256 or 320 kbps when you accept a larger file and want a less restrictive MP3 encode. A high output bitrate cannot recover detail that was absent or already removed from the video's original audio.

Duration also affects size, so removing unwanted silence or footage can matter as much as the bitrate choice. If you only need one passage, extract first and then cut the audio to the useful range.

The file picker accepts common video containers, including MP4, MOV, WebM, MKV, and AVI, with a 2 GB hard limit. Large files can still be slow or exceed available browser memory.

Some video files are genuinely silent because they contain only a video stream. Security footage, screen captures, animations, and exported clips may omit audio rather than carry silence. In that case there is no soundtrack to extract, and changing the requested output format cannot create one.

When inspection confirms no audio stream, the page shows No audio found with the message This video has no audio track and disables conversion. If the absence is reported only during FFmpeg processing, the same clear message replaces the lower-level media error.

A file can also fail for reasons other than missing audio, such as an unsupported or damaged container. Check the technical details shown for an ordinary processing error rather than assuming every failure means silence.

Extraction uses the same browser media engine as the site's other media tools. The first run downloads about 32 MB and caches it for later use. The Progress panel distinguishes Downloading video engine from Extracting audio, and you can cancel an active job.

The source video is not uploaded for conversion. File inspection, extraction, result playback, and download creation remain in the page. This is useful for private interviews, personal recordings, and internal footage, although you should still consider access to the device, browser extensions, and where you save the output.

Processing speed depends on the device, input duration, codecs, and output. Copying detected AAC to M4A avoids re-encoding that audio stream, while MP3, WAV, and non-AAC M4A paths must produce new audio data.

Once you have a separate soundtrack, open the audio trimmer to remove silence, an introduction, or material after the needed passage. Its waveform highlights the selected region, and its Start and End fields accept exact times. You can also use Set start to current position and Set end to current position while listening.

The trimmer offers Fade in and Fade out choices of Off, 0.5, 1, or 2 seconds. Select Same as input when possible and leave both fades Off to request stream copying for supported audio. Applying a fade requires re-encoding, as does choosing MP3 192k or WAV explicitly.

Extract before trimming when you want an audio-only result. If you also need a shorter video, trim the video separately so you keep control over both outputs.

Use MP3 for compact general playback, M4A to copy detected AAC without quality loss, or WAV for uncompressed 16-bit PCM. The MP3 choices are 128, 192, 256, and 320 kbps; 192 kbps is the default.

A video with no audio stream cannot produce a soundtrack. After extraction, use the audio trimmer if you need only a specific passage or want short fades at the boundaries.