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WIP A_Opus #106

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WIP A_Opus #106

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10 changes: 10 additions & 0 deletions codec_specs.md
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Expand Up @@ -612,6 +612,16 @@ Description: The Wavpack packets consist of a stripped header followed by the fr

Initialisation: none

### A_OPUS

Codec ID: A_OPUS

Codec Name: Opus interactive speech and audio codec

Description: Opus is designed to handle a wide range of interactive audio applications, including Voice over IP, videoconferencing, in-game chat, and even live, distributed music performances. It scales from low bitrate narrowband speech at 6 kbit/s to very high quality stereo music at 510 kbit/s. Opus uses both Linear Prediction (LP) and the Modified Discrete Cosine Transform (MDCT) to achieve good compression of both speech and music. Opus is defined in [RFC6716](https://tools.ietf.org/html/rfc6716).
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The description is meant to be about the mapping of the codec to Matroska: what blocks contain, how header fields have to be set (if anything special has to be observed) etc. It's not supposed to be a description of the codec itself. The Matroska specs are not codec specs or their marketing department.


Initialisation: The `Private Data` is set to the Opus `Identification Header` as defined in [@!RFC7845].

## Subtitle Codec Mappings

### S_TEXT/UTF8
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