What does Audio Extractor & Converter do?
Tubelexity extracts an audio track from video or converts an existing audio file to MP3, WAV or AAC in an M4A container. Trim the range, select sample rate and channels, adjust volume and add fades. The conversion runs locally and produces a previewable, watermark-free audio file.
How to use Audio Extractor & Converter
- 1Choose a video or audio file.
- 2Select MP3, WAV or AAC/M4A and set bitrate, sample rate and channels.
- 3Adjust trim points, fades and volume.
- 4Convert locally, preview the result and download the audio file.
Supported inputs and outputs
Inputs
MP4, MOV, MP3, WAV, browser/FFmpeg-supported media
Outputs
MP3, WAV, M4A containing AAC audio
Practical uses
- Saving interview audio
- Creating an MP3 review file
- Exporting WAV for another editor
- Trimming an audio excerpt
Browser and media limitations
- A video without an audio stream cannot be converted.
- Browser waveform decoding may fail even when FFmpeg conversion works.
- Large uncompressed WAV files use significant memory.
- High volume gain can clip audio.
How local processing works
Processing runs locally in your browser with FFmpeg.wasm. The media engine is downloaded on first use, but your media is not sent to Tubelexity or a processing server.
Frequently asked questions
Can I extract audio from a video for free?
Yes. Tubelexity converts a local video to audio in your browser without paid credits or a watermark.
Can I convert video to MP3?
Yes. Choose MP3, select a bitrate and process the local video.
Why is AAC downloaded as M4A?
AAC is the audio codec; M4A is the appropriate audio container and filename extension.
What happens if the video has no audio?
The tool reports that no usable audio stream was found and does not create a misleading output.
Can increasing volume cause clipping?
Yes. The tool warns about excessive gain; reduce the adjustment if the preview sounds distorted.