(registered 2018-11-14, last udpated 2021-05-21) Name: Phillip Maness Email: phillip.maness&xperi.com Media type name: audio Media subtype name: vnd.dts.uhd Required parameters: profile Values for profile: Profile = “p1” or “P1”, indicates a stream that conforms to a DTS-UHD transcoder profile that supports variable channel assignments, audio objects and associated metadata. This transcoder profile is used to send a partially decoded bitstream using a high bandwidth interface from a receiving device, such as one containing an HTML5 streaming client, to a compatible rendering client, such as an audio receiver. profile = "p2" or "P2", indicates a stream that conforms to DTS-UHD Profile 2, which corresponds to ISOBMFF sample entry types coded as 'dtsx' and CMAF compliant streams carrying the 'dts2' brand. profile = "p3" or "P3", indicates a stream that conforms to DTS-UHD Profile 3, which corresponds to ISOBMFF sample entry types coded as 'dtsy' and CMAF compliant streams carrying the 'dts3' brand. Optional parameters: N/A Encoding considerations: binary Security considerations: This media subtype consists of audio samples; there is no provision for the carriage of active content in a DTS-UHD bitstream, therefore there is no mechanism to introduce executable code to the client. The size, in bytes, of the decoded payload is known at the time of decoding, so a playback system can respond accordingly if more, or less, than the expected amount of data is generated. Where copy protection of the audio signal is necessary, encryption methods described in ISO/IEC 23000-7 and ISO/IEC 23000-9 can be employed, along with a digital rights management system. Interoperability considerations: DTS-UHD streams and decoders shall comply with the published specifications. The use of DTS-UHD in specific ecosystems may have additional requirements and/or constraints. Published specification: ETSI TS 103 491 v 1.1.1 https://www.etsi.org/deliver/etsi_ts/103400_103499/103491/01.01.01_60/ts_103491v010101p.pdf Applications which use this media: Application for encoding and decoding digital audio used in packaged media, streaming and broadcast applications Fragment identifier considerations: N/A Restrictions on usage: N/A Additional information: 1. Deprecated alias names for this type: N/A 2. Magic number(s): N/A 3. File extension(s): various media file types, such as .mp4, .mov, .mkv, etc. 4. Macintosh file type code: various media file types, such as moov, mpeg2, etc. 5. Object Identifiers: N/A General Comments: To be used for I.P. streaming delivery or download of audio-visual and audio only content. Person to contact for further information: 1. Name: Phillip Maness 2. Email: phillip.maness&xperi.com Intended usage: Common Author: Phillip Maness Change controller: Xperi Corporation, c/o Phillip Maness, phillip.maness&xperi.com