An MP4 file on your device that contains an audio track. The current MP4 converter accepts files up to 200 MB. Select a file rather than a link to an online video.
Step by step
Open the MP4 to MP3 tool
Choose the MP4 video from your device. For a larger recording, first create a shorter excerpt that fits within the stated file-size limit.
Choose an MP3 bitrate
The interface offers 128, 192, 256 and 320 kbps. Try 128 kbps for a smaller file; if audio detail matters more, compare it with a higher setting.
Start the conversion
Your browser may first load the audio engine and then process the recording. Keep the tab open. On a phone, begin with a short file.
Download and listen
Save the MP3 and check the beginning, the end and a section containing speech or music. If you only need part of it, continue with the Audio Cutter.
Bitrate and sound quality
MP3 is a lossy format: it discards some audio information to reduce file size. For the same duration, a higher bitrate generally produces a larger file. Listen to both speech and music to choose an acceptable compromise.
Saving poor source audio at 320 kbps does not turn it into an original studio-quality recording. The source matters too. Keep the original video instead of repeatedly re-encoding an already compressed result.
If the result has no sound
Play the original video first. If it is also silent, it may not contain an audio track. If the original has sound, check the player and device volume, then try a short, different MP4 file.
MP4 is a container format, so two MP4 files can use different audio and video codecs. Damaged or unusual recordings may fail to convert. If possible, export the video again from the original editor.
Phones and larger recordings
Use an up-to-date browser and close unnecessary tabs. Closing the processing tab or interrupting the browser can stop the operation. After downloading, look for the output in your device's downloads.
If your video exceeds 200 MB, make a smaller excerpt or use a local desktop editor. Renaming the file or changing its extension does not make it smaller or change its actual format.
Frequently asked questions
Can I paste a YouTube link?
This tool works with an MP4 file selected from your device. It is not an online video downloader.
Does it change the original video?
Conversion creates a new MP3 file. You can keep the original video on your device.
Is 320 kbps always better?
It uses more space and cannot recover details missing from the source. Listen to the output before choosing.
Can I keep only a short excerpt?
After extracting the audio, open the MP3 in the Audio Cutter and keep the section you need.
Try it with your own file
Open the tool for this task and keep the original file while you check the result.
Open the tool →Processing runs in your own browser. The engine may take time to load on first use; speed depends on the file and your device.
Use recordings you own or have permission to use. Extracting the audio does not grant additional rights to the content.