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| File extension | .OPUS |
| Category | Audio File |
| Description | OPUS is one of the most versatile audio codecs designed for high-speed online media data transmission. Having scrutinized MP3, which is still the most popular audio format, specialists from Mozilla Corporation and Skype Technologies S. A. joined efforts to produce an ultimate audio codec, which would inherit the advantages of MP3 yet use a compression scheme that would help files retain original sound quality. The biggest pluses of OPUS are low coding delay, multichannel sound and high compression levels. OPUS files combine SILK codec (Skype Technologies) and CELT codec (Mozilla Corporation). |
| Associated programs | VLC media player FFMpeg |
| Developed by | Xiph.Org Foundation |
| MIME type | audio/opus audio/ogg |
| Useful links | More detailed information on OPUS 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 |
