Step 1: Launch QuickTime app on your Mac system.Step 2: Click File > Open File… to browse and addAVI files from your system. Step 3: Once files are added,click Export… option from File tab. Select Movie to MPEG-4option from the Export panel. 2. Add or upload your MP4 file. 3. Select MP3 as the output format. 4. Initiate the conversion process, usually by clicking a “start” or “convert” button. Is there a free video converter for MP4 to MP3? Yes, there are several free options for converting MP4 to MP3. VLC Media Player is a popular open-source tool for both Windows and Mac Launch the VLC media player on your device then click the "Media" button. After that, click the "Open Multiple Files" button. Step 2. Next, click the "Add button" to load your MP4 files into the program. Once you are done uploading your target file, click the "Play" button, and then click the "Convert" button. Step 1 Import MP4 video files. Free download the a-class MP4 to MP3 converter for Windows or download the Mac version working on Macbook Pro/Air, iMac, fire it up and then load source MP4 video by clicking "Add File" button. Step 2 Choose MP3 as output format. In the output format area, click "to Music" tab and choose MP3 as the output format Click the File menu, choose the Convert or Create New Version option and choose the Create MP3 Version option. Top 3: VLC Media Player. VLC Media Player is an open-source media player. It has many features include recording the audio files and converting M4P to MP3 or other formats in a batch process. Step 1: Run the free M4P converter on your Step 1. Add Video to AAC Converter. Run iMedia Converter for Mac and import video files by clicking "Load file (s)" or "Add Video". Step 2. Choose Output Audio Format. Just click the "Format" > "Common Audio", then you will see all the audio formats (AC3, MP3, FLAC, WAV, M4A) we listed and others. Step 3. 6. Offer basic audio editing tools, like merge audio clips after convert. 7. Convert MP3 to other audio and video formats, like AIFF, FLAC, WMA, MP4, MOV, MKV, AVI, etc. In a word, if you are looking for the best way to convert AIFC to MP3, Video Converter is absolutely the right option. Step 3: Start the conversion. Now tap on Convert and it will start MKV to MP4 conversion on your Mac. An interface showing the conversion process will immediately pop up on your screen. Option 3. Handbrake. Handbrake is another professional software you can employ to convert MKV to MP4 on your Mac operating system. FDImBHz.