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Wait until the end of the conversion and download new MMF fileL
An OGG file is a compressed audio file that uses the free, proprietary Ogg Vorbis audio compression. Many connoisseurs of modern audio formats consider the Ogg format to be one of the most promising and, in particular, a worthy competitor to popular formats. Basically, it is a multimedia container format standard that is run by the non-profit organization Xiph.Org. Ogg Vorbis has the most modern and high quality psychoacoustic model, which is why the bitrate / quality ratio is significantly better than that of competitors. The OGG format has the main advantage - with the same bitrate, this format gives a higher quality in comparison with other formats. This 320 kbps bitrate format is used in Spotify broadcasts. In addition to the open source code, it should be noted that OGG is multiplatform. The encoder is compatible with almost all available operating systems.
The MMF format was created for mobile devices. These files most often store cell phone ringtones, although sometimes other objects such as graphics and text, as well as audio data can be found in them. Can be created from .WAV or .MID files using Yamaha SMAF Tools. There is no program to convert MP3 directly to MMF yet, so the MP3 file must first be converted to WAVE format (file with the .wav extension).