無料オンラインMPGからM4Rへのコンバーター

MPG is an extension used for files compressed with MPEG-1 or MPEG-2 standard. MPG files can be played on Windows, Mac and any mobile devices. The first versions of this format were significantly limited, supporting low video resolution and limiting data bandwidth, but latest standard updates allows it to be used even in HDTV broadcasting.

M4R - is a digital multimedia container format used to store audio in mono channel mode. This format is suitable for store ringtones and it is widely used by Apple iPhone for its ringtones. Needless to say that M4R and M4A formats shares many similar features.