Publish-Subscribe (XEP-0060)  and Personal Eventing Protocol (XEP-0163)  can be used to publish a wide variety of "extended presence" information about users. This document specifies an extended presence payload format that communicates information about the television shows, movies, or other videos that a user watches. This information may be of interest to a user's contacts and can also be used in social networking applications (e.g., IPTV systems).
Information about video viewing is provided by the user (or automated integration with video systems) and is propagated on the network by the user's client. The information container for video viewing data is a <video/> element that is qualified by the 'urn:xmpp:viewing:0' namespace. The video information itself is provided as the XML character data of the following children of the <video/> element:
|author||The author of the program||Robert Duncan||xs:string|
|cast||The cast members of the program||Trace Beaulieu, Frank Conniff, Joel Hodgson, Jim Mallon, Kevin Murphy, Michael J. Nelson, Mary Jo Pehl||xs:string|
|channel_name||The name of the channel showing the program||Sci-Fi Channel||xs:string|
|description||A description of the program||Terror From The Year 5000||xs:string|
|duration||The duration of the program (in seconds)||1800||xs:positiveInteger|
|end_time||The end time of the program||2006-08-29T03:30Z||xs:dateTime|
|episode||The episode number of the program||807||xs:string|
|program_name||The name of the program||Mystery Science Theater 3000||xs:string|
|program_type||The type of the program||Comedy||xs:string|
|start_time||The start time of the program||2006-08-29T03:00Z||xs:dateTime|
|subprogram_type||The type of the sub-program (e.g., outtakes on an extended DVD)||Cast interview||xs:string|
|uri||A URI for the video or relevant service||http://www.mst3kinfo.com/||xs:anyURI|
|user_comment||A user's free-form comments about the program||This is one of my favorite episodes! MST3K forever!||xs:string|
|user_rating||The user's personal rating of the program (on a scale of 1 to 10, with 10 being highest)||9||xs:string|
All elements are OPTIONAL.
When a user starts watching a video, its client may publish that fact to a PEP node whose NodeID is "urn:xmpp:viewing:0" (see Protocol Namespaces regarding issuance of one or more permanent namespaces) or to a generic pubsub node. Because viewing information is not pure presence information and can change independently of the user's availability, it SHOULD NOT be provided as an extension to the <presence/> stanza type.
The viewing information is then delivered to all subscribers:
When the user stops watching the video, the user's client SHOULD send an empty <video/> element with the same ItemID:
The videos that a user watches may be sensitive. A client MUST provide a way for a user to configure which videos or types of videos will not be published (e.g., via user preferences).
This document requires no interaction with the Internet Assigned Numbers Authority (IANA) .
This specification defines the following XML namespace:
Upon advancement of this specification from a status of Experimental to a status of Draft, the XMPP Registrar  shall add the foregoing namespace to the registry located at <https://xmpp.org/registrar/namespaces.html>, as described in Section 4 of XMPP Registrar Function (XEP-0053) .
If the protocol defined in this specification undergoes a revision that is not fully backwards-compatible with an older version, the XMPP Registrar shall increment the protocol version number found at the end of the XML namespaces defined herein, as described in Section 4 of XEP-0053.
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This XMPP Extension Protocol is copyright © 1999 – 2019 by the XMPP Standards Foundation (XSF).
Permission is hereby granted, free of charge, to any person obtaining a copy of this specification (the "Specification"), to make use of the Specification without restriction, including without limitation the rights to implement the Specification in a software program, deploy the Specification in a network service, and copy, modify, merge, publish, translate, distribute, sublicense, or sell copies of the Specification, and to permit persons to whom the Specification is furnished to do so, subject to the condition that the foregoing copyright notice and this permission notice shall be included in all copies or substantial portions of the Specification. Unless separate permission is granted, modified works that are redistributed shall not contain misleading information regarding the authors, title, number, or publisher of the Specification, and shall not claim endorsement of the modified works by the authors, any organization or project to which the authors belong, or the XMPP Standards Foundation.
## NOTE WELL: This Specification is provided on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. ##
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This XMPP Extension Protocol has been contributed in full conformance with the XSF's Intellectual Property Rights Policy (a copy of which can be found at <https://xmpp.org/about/xsf/ipr-policy> or obtained by writing to XMPP Standards Foundation, P.O. Box 787, Parker, CO 80134 USA).
The Extensible Messaging and Presence Protocol (XMPP) is defined in the XMPP Core (RFC 6120) and XMPP IM (RFC 6121) specifications contributed by the XMPP Standards Foundation to the Internet Standards Process, which is managed by the Internet Engineering Task Force in accordance with RFC 2026. Any protocol defined in this document has been developed outside the Internet Standards Process and is to be understood as an extension to XMPP rather than as an evolution, development, or modification of XMPP itself.
The primary venue for discussion of XMPP Extension Protocols is the <firstname.lastname@example.org> discussion list.
Discussion on other xmpp.org discussion lists might also be appropriate; see <http://xmpp.org/about/discuss.shtml> for a complete list.
Errata can be sent to <email@example.com>.
The following requirements keywords as used in this document are to be interpreted as described in RFC 2119: "MUST", "SHALL", "REQUIRED"; "MUST NOT", "SHALL NOT"; "SHOULD", "RECOMMENDED"; "SHOULD NOT", "NOT RECOMMENDED"; "MAY", "OPTIONAL".
4. The Internet Assigned Numbers Authority (IANA) is the central coordinator for the assignment of unique parameter values for Internet protocols, such as port numbers and URI schemes. For further information, see <http://www.iana.org/>.
5. The XMPP Registrar maintains a list of reserved protocol namespaces as well as registries of parameters used in the context of XMPP extension protocols approved by the XMPP Standards Foundation. For further information, see <https://xmpp.org/registrar/>.
Note: Older versions of this specification might be available at http://xmpp.org/extensions/attic/
Modified namespace in accordance with protocol versioning policies.
Updated in accordance with XEP-0163.