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| File extension | .RA |
| Category | Audio File |
| Description | RA is native RealAudio format for broadcasting streaming audio and video. It was created by RealNetworks in 1995. RA uses various audio codecs, including low bitrate formats for dial-up connection and high-quality music file types. It can be used as audio stream format for playing tracks while they are loading. A lot of online radio-stations used this format, while now it is pushed out by MP3, WAV and others. RA files can be zipped by a few codecs together for better file size. |
| Associated programs | RealNetworks RealPlayer |
| Developed by | Real Networks |
| MIME type | audio/vnd.rn-realaudio |
| Useful links | More detailed information on RA files |
| File extension | .OGG |
| Category | Audio File |
| Description | OGG files store compressed audio signal. The sound is encoded with Ogg Vorbis compression algorithm. OGG resembles MP3 but provides better sounding compared with MP3 track of the same size. It may contain audio meta data such as information about performer and track parameters. Being a container for storing audio information OGG can contain different sound compression types like FLAC or Speex. OGG file extension may also refer to Salt Lake city game or OriginLab graphic files. |
| Associated programs | Apple QuickTime Player Real Player Windows Media Player |
| Developed by | Xiph.Org Foundation |
| MIME type | |
| Useful links | More detailed information on OGG files |
