MP4 to MP3 – Save the Audio Track from a Video
Chat shortcut: /mp4tomp3
MP4 to MP3 keeps only the audio track and drops the video. Upload a video, choose the bitrate and get an MP3 for talks, music recordings and voice notes.
No Sign-Up
Free · The uploaded file is deleted after 24 hours; the result stays in “My media”.
What happens during conversion
An MP4 file is a container with a video and an audio track. The tool extracts only the audio track and saves it as MP3; the video itself stays unchanged on your device. The MP3 is usually much smaller than the video, because the picture typically makes up most of the file.
The audio in videos is usually AAC and is re-encoded for MP3. The bitrate decides quality and size: 128 kbit/s is enough for speech, 192 kbit/s is a good middle ground for music and speech, 320 kbit/s pays off mainly with high-quality sources. A high bitrate makes the file larger but does not bring back details that are missing in the source.
You need the tool when you want to listen to a lecture or webinar on the go, need a music recording as an audio file, turn an interview into a podcast episode or want to pass on the audio of a screen recording.
How it works
- 1
Upload a video
Drag the file (MP4, MOV, WebM, MKV, AVI and more, up to 96 MB and 30 minutes) into the box or select it.
- 2
Choose a bitrate
Take 128 kbit/s for voice notes, 192 kbit/s as the default or 320 kbit/s for high-quality music sources.
- 3
Convert
Click "Let's go"; the audio track is extracted and encoded as MP3.
- 4
Save the MP3
Download the file or pass it straight to another tool, for example to cut or transcribe it.
Typical uses
Lectures and webinars
Listen to the recording as MP3 on the go, without picture and with a small file.
Podcast from video
Reuse an interview or conversation as an audio episode and cut it afterwards.
Music recording
Save a concert or rehearsal recording from your phone as an audio file for your music library.
Voice note
Pass on spoken comments from a screen recording as MP3 or have them transcribed.
Good to know
- Input is video files such as MP4, MOV, WebM, MKV, AVI, WMV, FLV or 3GP; output is an MP3 at 128, 192 or 320 kbit/s.
- Limits: 96 MB, 30 minutes and at most the pixel area of 3840 × 2160 per video. Split longer videos beforehand in a video program.
- Multi-channel audio (5.1) is mixed down to stereo for MP3. With several audio tracks the default track is taken, there is no selection; a video without an audio track produces no MP3.
- The conversion costs no tokens and needs no account; there is no watermark and no advertising inserted into the file.
- The video is processed on our server and deleted after 24 hours (hourly cleanup); the MP3 stays in your media library until you remove it there.
- Links to video platforms are not accepted, only your own files. The rights to the content must be yours.
Frequently asked questions
Can I enter a YouTube link?
No, only your own video files. For the spoken text of a YouTube video there is the YouTube transcript.
Which bitrate makes sense?
192 kbit/s for music and speech, 128 for voice notes, 320 if the original is in high quality. A high bitrate cannot improve the quality of the source; it only makes the file larger.
Does the audio lose quality?
MP3 is lossy; how noticeable that is depends on source, bitrate and listening situation; 192 kbit/s is a common value. If you want to work losslessly, start from the original and use the MP3 Converter with WAV or FLAC; lost details do not come back from a finished MP3.
How big can the video be?
Up to 96 MB, 30 minutes and the pixel area of 3840 × 2160. Split longer videos beforehand in a video program.
Is my video kept?
Yes. Only the audio track is extracted; the video file on your device stays unchanged.
Does it work on a phone too?
Yes, the tool runs in the browser on phone, tablet and computer. You select the file from your gallery or file manager.
What happens to my file?
The uploaded video is deleted from our server after 24 hours (hourly cleanup). The finished MP3 stays in your media library until you remove it there. The rights to the content remain yours.