Extract the audio track from supported videos such as MP4, WebM or MOV and convert it to MP3 directly in your browser — ideal before transcription and subtitle creation.
A video-to-MP3 converter isolates the audio track of a video and saves it as a standalone MP3 file. This is useful not only for podcasts, but also for interviews, webinars, course videos and preparing audio for transcription or subtitles.
For subtitle projects, exporting MP3 is often the first quality check: listen to the audio track separately, check speech, noise and volume, and then decide whether the original video is ready for the AI Subtitle Generator.
Extract the spoken audio first and create subtitles or transcripts from it later.
Prepare course videos for LMS subtitles, lecture transcripts and searchable learning content.
Turn video podcasts into smaller audio files before trimming, cleaning or transcribing them.
The tool accepts common video containers that modern browsers can decode. Whether a file works also depends on the video and audio codec used.
| Format | Best for | Note |
|---|---|---|
| MP4 | YouTube exports, phone videos, webinars | The broadest support when the audio codec is browser-compatible. |
| WebM | Browser recordings and web exports | Usually works very well in modern Chromium-based browsers. |
| MOV | iPhone and QuickTime recordings | Support depends strongly on the browser and codec combination. |
| Audio format | Advantage | Transcription note |
|---|---|---|
| MP3 | Small file, easy to share, quick preview export | Good enough for many recordings, but heavy compression can reduce speech detail. |
| WAV | Uncompressed audio and maximum quality | Better for difficult speech, accents, echo, noise or professional transcription. |
| Original video | The original audio track is preserved | Usually the best option in the AI Subtitle Generator because the source can be processed directly. |
Our tool uses your browser’s native AudioContext to decode the video audio stream and a local MP3 encoder to create a real MP3 file — all using your device’s local CPU power.
The MP3 conversion on this page runs locally in your browser. Your video is not uploaded to a server for the pure MP3 export.
Open the AI Subtitle Generator to create SRT, VTT, translated subtitles or a video with burned-in subtitles from your original video.
Open AI Subtitle GeneratorChoose an MP4, WebM or MOV video file from your device.
Your browser decodes the audio track locally and creates an MP3 file from it.
Download the MP3 file or open the AI Subtitle Generator to create subtitles from the original video.
Yes. The Video to MP3 converter runs directly in your browser and is free to use.
No. This converter extracts and encodes audio locally in your browser. If you then use the AI Subtitle Generator, that is a separate workflow where the media file must be processed for transcription.
The tool accepts MP4, WebM and MOV. Whether a specific file can be decoded depends on your browser’s codec support.
The tool currently converts one video at a time to keep browser performance stable.
MP3 is sufficient for many recordings and keeps files small. For maximum recognition quality, the original video or a high-quality WAV file is often better.
Yes. You can use the audio as preparation or open the AI Subtitle Generator directly to create SRT, VTT, translations or burned-in subtitles.
Audio extraction helps you check sound quality, avoid unnecessary video handling and prepare recordings such as lectures, webinars, interviews or podcasts for transcription.