BS EN 62481-2-2014 pdf download.Digital living network alliance (DLNA) home networked device interoperability guidelines Part 2: DLNA media formats.
Due to the differences in the Media Format Profile support and network connectivity needs, the interoperability for Device Classes is only assured within a Device Category. To extend interoperability for the Device Classes in the MHD Device Category throughout the home network, including the Device Classes in the HND Device Category, a special Device Category named Home Infrastructure Device (HID) is defined. The HID Device Category ensures interoperability between devices of different categories and ensures interoperabitity between the Device Classes and Capabilities and the devices listed in the final two columns in the above tables, Table 5 summarizes all of the Device Classes in the HID Device Category and the mnemonics used within these Interoperability Guidelines.
5 Compendium of Media Format Profiles
5.1 Overview
This clause provides a comprehensive list of all Media Format Profiles defined for this version of the Media Format Guidelines. The description includes the Profile ID values as well as a brief summary of features and usage scenarios.
Content objects exchanged according to the DLNA Home Network Device Interoperability guidelines belong to one of the following media classes: image, audio, and AV. Each media Class typically includes multiple Media Formats, and each Media Format can be instantiated according to multiple Media Format Profiles. This specification defines the particular Media Format Profiles based on strict selection of format parameters and features, Each Media Class typically includes multiple Formats, and each Format can be instantiated according to multiple Media Format Profiles. This document also contains Media Format Profiles for media collections and printer XHTML documents. These profiles do not map into any of these media classes.
This clause contains a set of Tables which contain a summary of the various Media Format
Profile definitions contained in this document. Each Table has the header shown below in
Figure 3 and as described in the bulleted list.
• Profile ID: Profiles are identified by an alphanumeric token that is known as the Profile ID. This parameter is used by DLNA specifications and implementations whenever devices need to advertise or reference a content item of a particular profile. This clause provides a comprehensive list of all media format profiles, it describes their main features, and explains possible usage scenarios. Subsequent clauses of this guideline describe the strict specifications that define each of the profiles.
• Description: A description of the Profile ID.
• MIME type: The MIME Type to be utilized along with the DLNA Profile ID. Note that the MIME types defined for each of the profiles are always case-insensitive.
• Label: A Categorization Label which helps identify related Profile lOs.
• Usage scenarios: The rightmost column In the profile tables presented below describes existing and developing applicability scenarios for each of the DLNA media format profiles. The description in this column should be considered complementary information on each profile. It is not intended to be an exhaustive list of all potential usage or applicability scenarios. In fact, many other usage scenarios might become applicable in the near future
due to the emergence of new standards, new products, and new trends. In this column, the text in bold indicates applications or services whereas the text in italics indicates devices.
5.2 Categorization labels
The tables for DLNA Media Format Profiles presented in this subclause include a column called “Label,’ Table 6 defines the meaning of these labels. Three audio labels, two image labels, and five video labels have been defined to provide guidance on the expected complexity level of each of the defined format profiles. The audio labels differentiate between single-channel, 2-channel and multi channel scenarios. The video labels differentiate in terms of resolution:
ranging from QCIF to High Definition (HD) scenarios. The image labels differentiate in terms of the purpose of usage. For a given audio or AV profile, the label indicates the most complex scenario. Any given profile typically defines a range of scenarios, of which only the most complex is typically indicated by the label.BS EN 62481-2-2014 pdf download.