Free MP4 to MP3 Converter

Carbon visual style

Free program that converts MP4, M4A (iTunes audio), M4B (audiobooks), M4R (ringtones) and AAC files into MP3 or WAV. Extract audio tracks without loss of sound quality. Split M4B audiobooks into MP3 files based on chapters stored in the source file.

[jp-insert-adsense-main]

[jp-insert-prog-spec-table]

Download

[jp-insert-download-block]

Older versions

Description

Free MP4 to MP3 Converter is a program that converts MP4, M4A, M4B (audiobooks), M4R (ringtones) and AAC files to MP3 or WAV format. In addition, the program lets you copy (extract) original audio tracks without any loss of quality.

[jp-insert-donation-button]

The program also allows you to split input files based on chapters (often found in M4B files).
Metadata by default are copied from the source files, but the user can add their own tags.

To convert audio streams to MP3 the application uses the latest version of the LAME encoder. The program supports encoding with a constant bit rate – CBR, average bitrate – ABR and variable bit rate – VBR (based on LAME presets).

At default settings, the application converts files to MP3 with constant bitrate (CBR) and automatically selects all the encoding parameters so as to preserve the original audio quality.

Basic operation of the program is very simple: just drag & drop MP4, M4A, M4B, M4R or AAC files into main window, select the Default encoder settings in the Profile list and click the Convert button.
More advanced users can customize many encoding parameters: audio bitrate, bitrate mode, number of audio channels, audio sampling frequency, volume, time range and other.

The program is available in 32 bit and 64 bit version. The conversion process of the 64-bit version is faster by a few to 20%.

Tutorials

Free MP4 to MP3 Converter – Qucik start

Tutorial: How to convert M4A files to MP3

Screenshots

Carbon visual style

Main window

Compact view – Carbon visual style

File properties

Compact view – Default visual style

Conversion

The most important features

Converting MP4, M4A, M4B, M4R and AAC files to MP3 or WAV.
Possibility to copy (extracting) audio tracks from the source files without any loss of quality.
Splitting the output files by chapters stored in the source files.
Fully configurable file list (table) displays a lot of useful information: duration, audio stream size, audio codec, audio bitrate, artist, title, chapter title and many more.
MP3 compression using the latest version of the LAME encoder.
Support for all the LAME encoder presets.
Copying of metadata from the source files, or adding the user metadata.
A number of predefined conversion profiles. Possibility to save your own settings to an INI file.
The ability to customize encoding parameters: bitrate mode (CBR, ABR, VBR), audio bitrate, audio sampling frequency, number of audio channels, volume, time range.
Displaying a detailed technical information about the source files in the File properties window.
The ability to save encoder commands to BAT file.
Adding files to the file list by Drag and Drop.
The program is portable: it does not use system registry and all settings are stored in INI files. Thus, the program can be run from portable devices such as pendrives, removable drives.
The program has a built-in support for multiple languages. Current version supports Bulgarian, Chinese (incomplete), Czech, English, Finnish (incomplete), French, German, Greek, Hungarian, Italian, Japanese, Polish, Portuguese (BR), Russian, Serbian, Spanish, Swedish, Turkish.
100% freeware! – for private and commercial use. The program does not require registration, there is no built-in limitations.

How to uninstall?

[jp-insert-uninstall-info-uninstaller]

End User License Agreement

[jp-insert-license-info-total-free]

3rd party software

To encode the audio files the program uses the FFmpeg encoder (ffmpeg.org).

To retrieve information about video files, the program uses the library MediaInfo.dll (http://mediainfo.sourceforge.net/).

The program is accompanied by a special version of the FFmpeg encoder, adapted to the needs of the program. Not recommended to use other versions of FFmpeg.

Changelog

Version 1.7 (2021.01.25)

Updated conversion engine (FFmpeg) and multimedia information library (MediaInfo).
Information about the conversion progress is displayed on the title bar of the main window and on the taskbar.
The metadata settings are now saved to the configuration file and restored the next time the program is started.
FFmpeg encoder parameters window (F2): information has been divided into groups displayed on separate lines, which facilitates parameter analysis.
Fixed Stack overflow bug when selecting next files in the list very quickly.
Added support for files from network shares whose names start with the characters \\.
When saving the report to a text file in the File properties window, UTF-8 encoding is used (in previous versions the system default code page was used).
After the user has interrupted the conversion, the program displays a window asking whether to delete the incompletely converted file. Such files usually have a damaged internal structure and cannot be played.
If incorrect parameters are passed to the conversion engine (FFmpeg) and the conversion process fails, the output file will be automatically deleted. Such a file usually does not contain any data (0 bytes in size) and only unnecessarily litter the disk.
Displaying additional information in the error log window.
UTF-8 encoding (instead of the system code page) is used when writing the error log to a text file.
Improved handling of user-created profiles.
Lots of minor changes and fixes to the source code and the program interface.

Version 1.6 (2019.10.24)

Updated conversion engine (FFmpeg) and multimedia information library (MediaInfo).
New MP3 encoder settings: stereo mode (L/R stereo, joint stereo), encoding algorithm quality, lowpass filter.
Displaying the output directory on the title bar of the Output panel. This directory is also displayed when the panel is collapsed, so you no longer have to expand it to see where the resulting files will be saved.
Changes in the information module:
For easier identification, video streams are now highlighted in red, audio – green, subtitles – purple, chapters (menu) – blue.
The window layout is now saved to the configuration file and restored the next time the program is started.
When turning on dark visual styles, the main window icons are slightly darkened to reduce the contrast.
New translation: Slovenian.
New About window displaying additional information.
Lots of smaller improvements.
Support for Windows XP was dropped. Windows Vista or later is required. Maintaining compatibility with Windows XP would prevent the use of new technologies, audio and video encoders, and new FFmpeg features only available for Windows Vista and newer.

Version 1.5 (2018.07.04)

New conversion engine (FFmpeg) and multimedia information library (MediaInfo).
New control displaying the list of profiles. Now additional separators are displayed between the profiles, which increases the readability.
Small changes to other interface elements: file list, audio volume slider, navigation buttons, menus, some panels…
The error causing displaying of negative values of processed data after exceeding the 2GB threshold has been fixed.
Various minor improvements and bug fixes.

Version 1.4 (2018.02.23)

Updated conversion engine (FFmpeg) and media information library (MediaInfo).
New module: Check for updates.
Added ability to edit output directory list.
Added option to save the creation, last access and last write time of the source files in the output files.
Added the ability to select visible columns from the context menu of the file list and from the main menu.
Bug fixes and enhancements.

Version 1.3 (2017.03.22)

New conversion engine (FFmpeg) and multimedia information library (MediaInfo).
Changes in the program interface: new navigation buttons, slightly modified toolbar and menus.
New window: Tools Info
Bug fixes and enhancements.
The program name was changed from Pazera Free MP4 to MP3 Converter to Free MP4 to MP3 Converter.

Version 1.2 (2016.11.05)

New conversion engine (FFmpeg) and multimedia information library (MediaInfo).
From now the program is also available in a 64-bit version.
Improved reading and writing metadata.
New action: Uncheck selected files.
Displaying a more detailed information about the source files in the File properties window.
New visual style: Cobalt XEMedia.
Added support for Swedish language.

Version 1.1 (2016.07.06)

New conversion engine (FFmpeg) and multimedia information library (MediaInfo).
Added the ability to copy (extraction) audio tracks without any loss of quality.
Added support for M4R files (ringtones).
Possibility to splitting the output files by chapters stored in the source files.
Ability to add custom metadata to the output files by the user.
Improved matching of encoding parameters with automatic settings.
Improved detection of data streams in the source files.
New file list control with many additional features (sorting, row and column moving…).
New columns: icon, full file name, duration, menu, chapters, chapter title, chapter start, chapter end, chapter number, artist, title, album, year, track number, genre, audio (summary), audio codec, audio codec ID, audio profile, audio bitrate, channels, sampling, audio stream size, video (summary).
Displaying a detailed technical information about the source files in the File properties window.
Better support for MP4, M4A and M4B files.
Changed toolbar.
New icons.
Better support for visual styles.
Added support for additional languages: Bulgarian, Chinese (incomplete), Finnish (incomplete), Hungarian, Russian.
The program name was changed from Pazera MP4 to MP3 to Pazera Free MP4 to MP3 Converter.