IEC TS 62871-2:2019

IEC TS 62871-2 ®
Edition 1.0 2019-12
TECHNICAL
SPECIFICATION
colour
inside
Professional video storage products – Tape-less camera recorder using MXF file
format – Encoding guidelines –
Part 2: Mapping MPEG-2 and AVC Streams into MXF
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IEC TS 62871-2 ®
Edition 1.0 2019-12
TECHNICAL
SPECIFICATION
colour
inside
Professional video storage products – Tape-less camera recorder using MXF file

format – Encoding guidelines –

Part 2: Mapping MPEG-2 and AVC Streams into MXF

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160; 35.040.40 ISBN 978-2-8322-7711-9

– 2 – IEC TS 62871-2:2019 © IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Mapping of MPEG-2 video and AVC streams into MXF . 7
4.1 Video codec . 7
4.2 Video codec mapping . 7
5 Recommended constraints for professional tape-less camera recorders . 8
5.1 General . 8
5.2 Frame wrapping . 8
5.3 Edit Unit size . 9
5.4 Segment size of Index table . 9
5.5 Codec constraints . 10
5.6 Placement of parameter set (SPS/PPS) . 10
5.7 Multi-slice encoding of AVC Stream . 12
5.8 Occurrence condition of NAL unit . 13
Bibliography . 14

Figure 1 – Example of MPEG-2 video into MXF OP-1a File Body . 8
Figure 2 – Example of AVC Stream into MXF OP-1b File Body . 8
Figure 3 – Example of Index Table Segment with different size . 9
Figure 4 – Example of Index Table Segment with same size . 9
Figure 5 – Example of placing SPS and PPS in each picture. 11
Figure 6 – Example of placing SPS and PPS at the start of each GOP . 11
Figure 7 – Example of placing SPS and PPS at the start of the stream . 12

Table 1 – NAL unit types associated with video ES specified in ISO/IEC 14496-10 . 13

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PROFESSIONAL VIDEO STORAGE PRODUCTS –
TAPE-LESS CAMERA RECORDER USING MXF FILE FORMAT –
ENCODING GUIDELINES –
Part 2: Mapping MPEG-2 and AVC Streams into MXF

FOREWORD
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Technical specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC TS 62871-2, which is a technical specification, has been prepared by technical area 6:
Storage media, storage data structure, storage systems and equipment, of IEC technical
committee 100: Audio, video and multimedia systems and equipment.

– 4 – IEC TS 62871-2:2019 © IEC 2019
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
100/3152/DTS 100/3218/RVDTS
Full information on the voting for the approval of this technical specification can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62871 series, published under the general title Professional video
storage products – Tape-less camera recorder using MXF file format – Encoding guidelines,
can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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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, video 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 (SMPTE). 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 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.
The IEC 62871 series gives encoding guidelines for professional tape-less camera recorders
using the MXF file format to ensure interoperability.
The IEC 62871 series currently consists of:
– IEC 62871-1, which gives guidelines for MXF operational patterns for professional tape-
less camera recorders and also outlines the general parts of the MXF file format.
– IEC 62871-2, which gives guidelines for mapping MPEG-2 and AVC Streams into MXF
files which are used for professional tape-less camera recorders.

– 6 – IEC TS 62871-2:2019 © IEC 2019
PROFESSIONAL VIDEO STORAGE PRODUCTS –
TAPE-LESS CAMERA RECORDER USING MXF FILE FORMAT –
ENCODING GUIDELINES –
Part 2: Mapping MPEG-2 and AVC Streams into MXF

1 Scope
This part of IEC 62871, which is a technical specification, specifies implementation guidelines
for mapping MPEG-2 video and AVC streams into MXF file format for professional tape-less
camera recorders.
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 N
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