MP4 is a widely used format for video, but also it can be used to store audio. The MP4 file with the audio track will have the M4A extension and can use various codecs, such as AAC or ALAC.
If you wish to decrease MP4 file size without quality loss, it would be good idea to remove video and keep only audio track. In order to convert a file you just have to select the MP4 files you wish to convert and the output format, and then Audio Converter Plus will take care of the rest for you.
The installation process is simple and does not require specific knowledge. You can start the converter directly from the installer or do it later by clicking on the product icon on the desktop.
You can add individual files or entire folders with video files using "Add File" or "Add Folder" buttons. If you want the converter to add files from the subfolders, then activate this feature in the program settings. Of course, you can just drag and drop files and folders onto the program window.
Converted files can be placed in a folder with the original file or in any other folder of your choice. The converter allows you to save the original folder structure.
Select M4A encoder from the list and click the "Encoder options". Use the "Same as original" choices to keep original compression options from MP4 video or define your own sampling rate and bitrate.
Now you are ready to begin the conversion. Click on the "Convert" button and you can do your own business. At the end of the process, you will see a flashing icon on the taskbar.