IEC TS 62871-1-2015 Professional video storage products - Tape-less camera recorder using MXF file format - Encoding guidelines - Part 1 MXF Operational Pattern.pdf

1、 IEC TS 62871-1 Edition 1.0 2015-12 TECHNICAL SPECIFICATION Professional video storage products Tape-less camera recorder using MXF file format Encoding guidelines Part 1: MXF Operational Patterns IEC TS 62871-1:2015-12(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Ge

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11、 products Tape-less camera recorder using MXF file format Encoding guidelines Part 1: MXF Operational Patterns INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.160.40; 35.040 ISBN 978-2-8322-3080-0 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obta

12、ined this publication from an authorized distributor. colour inside 2 IEC TS 62871-1:2015 IEC 2015 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms, definitions,abbreviations and conventions 7 3.1 Terms and definitions 7 3.2 Abbreviations 7 3.3 Conventions 8 4 Overvi

13、ew of the MXF file format . 8 4.1 General . 8 4.2 File structure . 9 4.2.1 Overview . 9 4.2.2 File Header 9 4.2.3 File Body . 9 4.2.4 File Footer . 9 4.3 Partitions 9 4.3.1 Overview . 9 4.3.2 Header Partition 10 4.3.3 Body Partition 10 4.3.4 Footer Partition 10 4.3.5 Partition rules summary . 10 4.3

14、.6 Partition status 11 4.4 Key-Length-Value (KLV) coding 11 4.4.1 KLV encoding structure . 11 4.4.2 KLV Fill Item 11 4.5 Header Metadata 12 4.5.1 Overview . 12 4.5.2 Structural Metadata . 12 4.5.3 Descriptive Metadata . 12 4.5.4 Structure of Header Metadata 12 4.6 Operational Pattern . 13 4.6.1 Oper

15、ation Pattern outline . 13 4.6.2 Generalized Operational Pattern 14 4.6.3 Specialized Operational Pattern . 15 4.7 Index Table . 15 5 Encoding guideline for professional tape-less camera recorder 15 5.1 General . 15 5.2 Operational Pattern . 16 5.2.1 General . 16 5.2.2 Operation of OP-1a 16 5.2.3 Op

16、eration of OP-Atom . 17 Bibliography 20 Figure 1 Overview of MXF file structure . 9 Figure 2 Required order of file components in each Partition kind 10 IEC TS 62871-1:2015 IEC 2015 3 Figure 3 Key-length-value encoding . 11 Figure 4 Header Metadata structure . 13 Figure 5 Generalized Operational Pat

17、tern 14 Figure 6 Basic structure of Material Package and File Package in OP-Atom 15 Figure 7 Typical example of Index Table placement for OP-1a . 17 Figure 8 Example-1 to locate the entire Index Table in the Body Partition 17 Figure 9 Example-2 to locate the entire Index Table in the Header Partitio

18、n . 17 Figure 10 Basic Structure of OP-Atom . 18 4 IEC TS 62871-1:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ PROFESSIONAL VIDEO STORAGE PRODUCTS TAPE-LESS CAMERA RECORDER USING MXF FILE FORMAT ENCODING GUIDELINES Part 1: MXF Operational Patterns FOREWORD 1) The International Electrote

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32、cture, storage systems and equipment, of IEC technical committee 100: Audio, video and multimedia systems and equipment. IEC TS 62871-1:2015 IEC 2015 5 The text of this technical specification is based on the following documents: Enquiry draft Report on voting 100/2373/DTS 100/2446/RVC Full informat

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36、ur printer. 6 IEC TS 62871-1:2015 IEC 2015 INTRODUCTION The professional camera recorder has evolved from a traditional tape-based system into a file-based system, taking advantage of recent advances in information technology. Instead of using conventional magnetic tape as the recording medium, vide

37、o and audio streams can now be stored as files that can be read directly by a personal computer (PC). Several file format specifications exist, and most broadcasters are using the Material eXchange Format (MXF) which has been standardized by the Society of Motion Picture and Television Engineers (SM

38、PTE). As reported in IEC TR 62712:2011, the MXF file format has been adopted for various types of professional tape-less camera recorders. MXF is being used by many broadcast stations around the world. Since the MXF file format provides a multiplicity of functions and options in order to satisfy the

39、 needs of various applications in a range of situations, it is important to address interoperability issues between equipment. Therefore, it is essential for interoperability that there is an appropriate Technical Specification that specifies guidelines for MXF implementations and operational usage.

40、 The IEC 62871 series gives encoding guidelines for professional tape-less camera recorders using the MXF file format to ensure interoperability. Future parts will be proposed to specify implementation guidelines appropriate for specific codecs. IEC TS 62871-1:2015 IEC 2015 7 PROFESSIONAL VIDEO STOR

41、AGE PRODUCTS TAPE-LESS CAMERA RECORDER USING MXF FILE FORMAT ENCODING GUIDELINES Part 1: MXF Operational Patterns 1 Scope This part of IEC 62871, which is a Technical Specification, gives guidelines for MXF Operational Patterns for professional tape-less camera recorders and also outlines the genera

42、l parts of the MXF file format. The guidelines are applicable to the creation of an MXF file in professional tape-less camera recorders. They are also applicable for content management software and to equipment that supports MXF files generated by professional tape-less camera recorders. 2 Normative

43、 references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appl

44、ies. SMPTE ST 377-1:2011, Material Exchange Format (MXF) File Format Specification SMPTE ST 378:2004, For Television Material Exchange Format (MXF) Operational Pattern 1a (Single Item, Single Package) SMPTE ST 379-1:2009, Material Exchange Format (MXF) MXF Generic Container SMPTE ST 379-2:2010, Mate

45、rial Exchange Format (MXF) MXF Constrained Generic Container SMPTE ST 390:2011, Material Exchange Format (MXF) Specialized Operational Pattern “OP-Atom” (Simplified Representation of a Single Item) 3 Terms, definitions,abbreviations and conventions 3.1 Terms and definitions For the purposes of this

46、document, the terms and definitions given in SMPTE ST 377-1, SMPTE ST 379-1 and SMPTE ST 379-2 apply. 3.2 Abbreviations Abbreviation Definition MP Material Package FP File Package 8 IEC TS 62871-1:2015 IEC 2015 OP-1a Operational Pattern 1a OP-1b Operational Pattern 1b OP-1c Operational Pattern 1c OP

47、-2a Operational Pattern 2a OP-2b Operational Pattern 2b OP-2c Operational Pattern 2c OP-3a Operational Pattern 3a OP-3b Operational Pattern 3b OP-3c Operational Pattern 3c OP-Atom Operational Pattern Atom CBR Constant Bit Rate VBR Variable Bit Rate 3.3 Conventions In this Technical Specification, ca

48、pital letters are used for terms defining the MXF file standardized in the SMPTE publications which are cited in the normative references. 4 Overview of the MXF file format 4.1 General The MXF file format is standardized in SMPTE, and different aspects of the detailed specifications are covered in s

49、everal standards. The general part is specified in SMPTE ST 377-1, which defines the data structure of the MXF file for the interchange of audio-visual material, all the components of the MXF file format and the requirements to enable these components to be added as a plug-in to an MXF file. The MXF Generic Container is specified in SMPTE ST 379-1 and SMPTE ST 379-2. The Generic Container is the native Essence Container of the MXF file body and these sta