無料オンラインOGVからM4Rへのコンバーター

OGV is a container that uses OGG open source format. OGG is unrestricted of software patents which was one of the main goals of its creation. OGV file extension is used to store video stream with or without audio which in turn may be compressed with the Opus, Vorbis, Theora or Speex algorithm. The format is used to play video content on web pages with the help of HTML5. OGV files can be played by wide variety of media players.

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.