SMPTE ST 2070-1-2014 Stereoscopic 3D in MXF for Operations - Common Provisions.pdf

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1、 Copyright 2147 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 3 Barker Avenue, White Plains, NY 10601 (914) 761-1100 Approved May 13, 2014 Table of Contents Page Foreword . 2 Intellectial Property 2 Introduction 2 1 Scope . 3 2 Conformance Notation . 3 3 Normative References . 3 4 Defini

2、tion of Acronyms, Terms and Data Types 4 5 Image Format Requirements . 4 6 Metadata Structure . 4 6.1 Stereoscopic SubDescriptor 4 7 Index Tables . 6 Annex A Bibliography (Informative) . 7 Page 1 of 7 pages SMPTE ST 2070-1:2014 SMPTE STANDARD Stereoscopic 3D in MXF for Operations Common Provisions S

3、MPTE ST 2070-1:2014 Page 2 of 7 pages Foreword SMPTE (the Society of Motion Picture and Television Engineers) is an internationally-recognized standards developing organization. Headquartered and incorporated in the United States of America, SMPTE has members in over 80 countries on six continents.

4、SMPTEs Engineering Documents, including Standards, Recommended Practices, and Engineering Guidelines, are prepared by SMPTEs Technology Committees. Participation in these Committees is open to all with a bona fide interest in their work. SMPTE cooperates closely with other standards-developing organ

5、izations, including ISO, IEC and ITU. SMPTE Engineering Documents are drafted in accordance with the rules given in its Standards Operations Manual. SMPTE ST 2070-1 was prepared by Technology Committee 31FS. Intellectual Property At the time of publication no notice had been received by SMPTE claimi

6、ng patent rights essential to the implementation of this Engineering Document. However, attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. SMPTE shall not be held responsible for identifying any or all such patent rights. Introductio

7、n There are requirements for both interleaved and separated stereoscopic 3D content. While the timing relationship between each pair of images is especially important during stereoscopic acquisition and display, during post-production and distribution image pairs may be dealt with in non-real time a

8、s outlined in this suite of documents. When content is created for distribution, left eye and right eye pictures might be interleaved. When content needs to be edited or manipulated in post-production, it might be stored as separated files. In stereoscopic acquisition, either an interleaved or separ

9、ated structure can be used. As a stereoscopic 3D asset moves from production, through post-production to distribution (whether broadcast, web, on-demand or other), these can be transcoded and rewrapped. Upon playout of a file compliant with this suite of standards, the timing relationships between l

10、eft-eye images and right-eye images must be recreated. SMPTE ST 2063 discusses this requirement (and others germane to high quality stereoscopic 3D production) in detail, and may be helpful to implementers. The SMPTE ST 2070 document suite therefore addresses such use cases based on the common provi

11、sions defined in this (part 1) document. The part 2 document specifies the interleaved wrapping using OP-1a and the part 3 document provides the single track wrapping using OP-Atom or OP-1a. Dual image stereoscopic 3D imaging systems deliver two images (left eye and right eye) that are arranged to b

12、e seen simultaneously, or near simultaneously, by the left and right eyes. Viewers then perceive increased depth in the picture, which becomes more like the natural binocular viewing experience. Regardless of how the pair of images are created, it is assumed that they are properly aligned in space a

13、nd time at the input of the MXF file system. This standard therefore describes means by which the MXF file system can be as transparent as possible to the time and space alignment of the image pair. The SMPTE D-Cinema family of standards also describes a MXF mapping for stereoscopic images within th

14、at application space. The SMPTE ST 2070 suite of documents is not intended to be used in the D-Cinema application space. SMPTE ST 2070-1:2014 Page 3 of 7 pages 1 Scope This document is the first part of a multipart document set that defines metadata and index structure of stereoscopic 3D video strea

15、ms in MXF for operational applications. This document covers the common provisions that are required by this family of standards. This standard currently supports streams of stereoscopic images, either as uncompressed image pairs, intra- or inter-frame compressed formats. 2 Conformance Notation Norm

16、ative text is text that describes elements of the design that are indispensable or contains the conformance language keywords: “shall“, “should“, or “may“. Informative text is text that is potentially helpful to the user, but not indispensable, and can be removed, changed, or added editorially witho

17、ut affecting interoperability. Informative text does not contain any conformance keywords. All text in this document is, by default, normative, except: the Introduction, any section explicitly labeled as “Informative“ or individual paragraphs that start with “Note:” The keywords “shall“ and “shall n

18、ot“ indicate requirements strictly to be followed in order to conform to the document and from which no deviation is permitted. The keywords, “should“ and “should not“ indicate that, among several possibilities, one is recommended as particularly suitable, without mentioning or excluding others; or

19、that a certain course of action is preferred but not necessarily required; or that (in the negative form) a certain possibility or course of action is deprecated but not prohibited. The keywords “may“ and “need not“ indicate courses of action permissible within the limits of the document. The keywor

20、d “reserved” indicates a provision that is not defined at this time, shall not be used, and may be defined in the future. The keyword “forbidden” indicates “reserved” and in addition indicates that the provision will never be defined in the future. A conformant implementation according to this docum

21、ent is one that includes all mandatory provisions (“shall“) and, if implemented, all recommended provisions (“should“) as described. A conformant implementation need not implement optional provisions (“may“) and need not implement them as described. Unless otherwise specified, the order of precedenc

22、e of the types of normative information in this document shall be as follows: Normative prose shall be the authoritative definition; Tables shall be next; followed by formal languages; then figures; and then any other language forms. 3 Normative References The following standards contain provisions

23、that, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most rece

24、nt edition of the standards indicated below. SMPTE ST 377-1:2011, Material Exchange Format (MXF) File Format Specification Amendment 1:2012 to SMPTE ST 377-1:2011 Amendment 2:2012 to SMPTE ST 377-2:2011 SMPTE ST 2070-1:2014 Page 4 of 7 pages 4 Definition of Acronyms, Terms and Data Types For the pur

25、poses of this document, the terms and definitions given in SMPTE ST 377-1 apply. 5 Image Format Requirements This family of standards (SMPTE ST 2070-1 and related parts) supports uncompressed and compressed image streams. The stereoscopic images shall be uncompressed images or from the same compress

26、ion family with identical compression parameters including GOP structures and GOP cadence. Both image streams, coincident in time, shall be full video frames or individual video fields. Note: Image compression systems which have additional requirements can document those provisions in another standa

27、rd or Recommended Practice. 6 Metadata Structure Each File Descriptor that is associated with any Source Package track that contains part of a stereoscopic stream pair, for any kind of picture or data essence, shall contain a SubDescriptor Strong Reference pointing to a concrete instance of the Ster

28、eoscopic SubDescriptor defined in this standard. 6.1 Stereoscopic SubDescriptor MXF Stereoscopic 3D (S3D) streams conforming to this standard shall be described in the Source Package using the Stereoscopic SubDescriptor in conjunction with the File Descriptor concrete classes adequate to describe th

29、e encoded streams. 6.1.1 Stereoscopic SubDescriptor Key The OperationsStereoscopic SubDescriptor shall be strongly referenced by the Generic Descriptor which is the Superclass of Picture and Data Essence Descriptors as specified in SMPTE ST 377-1. The Set key (UL) shall be as defined in Table 1. Tab

30、le 1 Key for OperationsStereoscopic SubDescriptor Byte No. Description Value (hex) Meaning 1-13 Defined in Table 18 of the Structural Header Metadata Implementation section of SMPTE ST 377-1 (File Format Specification) 14 Set Kind (1) 01h Structural MetadataSet 15 Set Kind (2) 72h OperationsStereosc

31、opic SubDescriptor 16 Reserved 00h Reserved 6.1.2 OperationsStereoscopic SubDescriptor Structure Table 2 contains the permissible Universal Label values that shall be used to identify each of the eyes. SMPTE ST 2070-1:2014 Page 5 of 7 pages Table 2 Universal Label for OperationsStereoscopic Eye ID B

32、yte No. Description Value (hex) Meaning 1 Object Identifier 06h 2 Label size 0Eh 3 Designator 2Bh ISO, ORG 4 Designator 34h SMPTE 5 Registry Category Designator 04h Labels 6 Registry Designator 01h Labels Registry 7 Structure Designator 01h Labels Structure 8 Version Number 0Dh Version of the Regist

33、ry 9 Item Designator 04h Parametric 10 Essence Kind See Table 3 Picture or Data Essence 11 Coding Characteristics 02h Picture or Data Coding Characteristics 12 Eye Labeling 10h Picture or Data Eye Labeling 13 Stereoscopic Eye Labeling ST_2070-1 01h Eye Labeling for Stereoscopic streams conforming to

34、 this specification 14 Stereoscopic Eye ID See Table 3 Stereoscopic Eye Identifier 15 Reserved 00h 16 Reserved 00h The values of byte 10 and byte 14 shall be as follows: Table 3 Stereoscopic Eye ID Universal Labels bytes 10 and 14 Essence Kind Eye Value of Byte 10 (hex) Value of Byte 14 (hex) Commen

35、ts Picture Left 01h 01h Picture track corresponding to Left Eye Picture Right 01h 02h Picture track corresponding to Right Eye Data Left 03h 01h Data track corresponding to Left Eye Data Right 03h 02h Data track corresponding to Right Eye The Stereoscopic SubDescriptor structure and metadata element

36、s are defined in Table 4. SMPTE ST 2070-1:2014 Page 6 of 7 pages Table 4 OperationsStereoscopic SubDescriptor Item Name Type Len Local Tag Item UL Req ? Meaning Default OperationsStereoscopic SubDescriptor Set Key 16 06.0E.2B.34. 02.7F.01.01. 0D.01.01.01. 01.01.72.00 Req Defines the Stereoscopic3DEy

37、eID SubDescriptor Set Length BER Length var Req Set length All elements from the SubDescriptor MetadataSet defined in SMPTE ST 377-1 Annex B.3 Stereoscopic Eye ID Universal Label 16 dyn. 06.0E.2B.34. 01.01.01.0E. 01.03.07.03. 01.00.00.00 Req Universal Label that identifies the eye (as defined in Tab

38、le 2) Stereoscopic Data Essence Coding Universal Label 16 dyn 06.0E.2B.34. 01.01.01.0E. 01.03.07.03. 02.00.00.00 Opt Specifies the data Essence coding type Values are listed in SMPTE ST 400 (RP 224). The value for the UL should not contain an RP 224 node. RP 210 Specifies the Coding scheme used The

39、OperationsStereoscopic SubDescriptor shall be used as a SubDescriptor for a Generic Picture Essence Descriptor, or one of its subclasses, to identify each streams eye. Where a data track defines data essence related to one of the picture essence streams, the OperationsStereoscopic SubDescriptor shal

40、l also be used as a SubDescriptor for a Generic Data Essence Descriptor, or one of its subclasses, to identify the eyes for the data streams. 7 Index Tables In the case where the left-eye and right-eye video streams appear in the same container, with or without other tracks, and the video streams ar

41、e reordered temporally, the left- and right-eye pictures of each frame shall be reordered and coded identically because the single Index Table Entry for each frame has only a single set of flags. In the case where the left-eye and right-eye video streams appear in different containers, each correspo

42、nding Index Table Entry of the two Index Tables shall have identical Index Table Entry flags. Note: These rules are necessary to enforce matching coding cadences between each eyes video streams. SMPTE ST 2070-1:2014 Page 7 of 7 pages Annex A Bibliography (Informative) Note: All references in this do

43、cument to other SMPTE documents use the current numbering style (e.g. SMPTE ST 298:2009) although, during a transitional phase, the document as published (printed or PDF) may bear an older designation (such as SMPTE 298-2009). Documents with the same root number (e.g. 298) and publication year (e.g.

44、 2009) are functionally identical. SMPTE ST 298:2009, Universal Labels for Unique Identification of Digital Data SMPTE RP 210, Metadata Dictionary Registry of Metadata Element Descriptions SMPTE RP 224, SMPTE Labels Register SMPTE ST 429-10:2008, D-Cinema Packaging Stereoscopic Picture Track File SMPTE ST 2063:2012, Stereoscopic 3D Full Resolution Contribution Link Based on MPEG-2 TS SMPTE ST 2067-2:2013, Interoperable Master Format Core Constraints