MP4 to MP3 Converter
Extract the audio from an MP4 video as an MP3 file, right in your browser. Lectures, interviews and music clips become audio you can play anywhere — no upload needed.
Sometimes you only need the sound
A recorded lecture, a video podcast, an interview or a concert clip often matters for its audio alone. Extracting it with the MP3 extractor above turns a heavy video into a small MP3 you can play in any music app, speed up in a podcast player or archive without the picture. The same tool accepts MOV, WebM, MKV, AVI and M4V sources, since it shares the local engine with the video to MP4 converter.
First track, honest quality
Two facts worth knowing before you convert: the MP3 is made from the video's first audio track only, so multi-language files need the right track first; and MP3 encoding is lossy, so the result preserves the source's quality at best — it cannot improve a poor recording. Subtitles and cover art are not carried into the file. If your source is audio already rather than video, the audio converter handles M4A, WAV, OGG and FLAC to MP3, and the reverse trick — turning a clip into a looping image — is covered by MP4 to GIF.
Extracted on your device
Decoding and encoding run in your browser tab. No upload, no queue, no copy of your recording left on a server.
Frequently asked questions
Which audio track ends up in the MP3?
The first audio stream in the video. If a file carries several tracks — different languages, for example — only the first is exported, and a video with no audio track cannot produce an MP3 at all.
Will the MP3 sound better than the video's audio?
No. MP3 is lossy, and re-encoding an already-compressed source can only keep or slightly reduce quality, never restore detail. A higher bitrate makes a bigger file, not a better recording.
Can I extract audio from formats other than MP4?
Yes. The extractor accepts the same containers as the video tools here — MP4, MOV, WebM, MKV, AVI and M4V — and always writes an MP3. Attached artwork and subtitle tracks are not included.
Why did the extraction fail?
Usually because the video has no audio stream, or its streams use a codec the in-browser engine cannot decode. Encrypted or damaged files can also fail.
Is my video uploaded for extraction?
No. The video is decoded and the MP3 encoded entirely in your browser. Long lectures and private recordings never leave your device.
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