MiniTool Video Converter is the best M4R converter on the Windows system because it is totally free. If you have a Windows computer and want to convert M4R files to other file formats offline, then you should try the M4R converter for Windows mentioned below. To learn more information about it, read this post - What Is M4R and How to Open It on Different Operating Systems. M4R discards data with minimal quality loss. This is a lossy algorithm, just like AAC and MP3. It is part of the MPEG-4 standard and is specified in the ISO/IEC standard 14496-3. M4R is essentially a renamed AAC (M4A) file - similar to MP3, but will further compress digital audio files.
