ISO/IEC 14496-3:2009/Amd 6:2017

Information technology — Coding of audio-visual objects — Part 3: Audio — Amendment 6: Profiles, levels and downmixing method for 22.2 channel programs

Technologies de l'information — Codage des objets audiovisuels — Partie 3: Codage audio — Amendement 6: .

General Information

• Status: Withdrawn
• Publication Date: 30-Mar-2017
• Withdrawal Date: 30-Mar-2017
• ICS: 35.040 - Information coding
• ICS: 35.040.40 - Coding of audio, video, multimedia and hypermedia information
• Technical Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Drafting Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 12-Dec-2019

Relations

• Revised: ISO/IEC 14496-3:2019 - Information technology — Coding of audio-visual objects — Part 3: Audio
• Effective Date: 23-Apr-2020
• Amends: ISO/IEC 14496-3:2009 - Information technology — Coding of audio-visual objects — Part 3: Audio
• Effective Date: 11-Dec-2021

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 14496-3
Fourth edition
2009-09-01
AMENDMENT 6
2017-03
Information technology — Coding of
audio-visual objects —
Part 3:
Audio
AMENDMENT 6: Profiles, levels and
downmixing method for 22.2 channel
programs
Technologies de l’information — Codage des objets audiovisuels —
Partie 3: Codage audio
AMENDEMENT 6: .
Reference number
ISO/IEC 14496-3:2009/Amd.6:2017(E)
©
 ISO/IEC 2017

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ISO/IEC 14496-3:2009/Amd.6:2017(E)

COPYRIGHT PROTECTED DOCUMENT
©  ISO/IEC 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ISO/IEC 14496-3:2009/Amd.6:2017(E)

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC 1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
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World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/ iso/ foreword .html.
Amendment 6 to ISO/IEC 14496-3:2009 was prepared by Joint Technical Committee ISO/IEC JTC 1,
Information technology, Subcommittee SC 29,  Coding of audio, picture, multimedia and hypermedia
information.
© ISO/IEC 2017 – All rights reserved  iii

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ISO/IEC 14496-3:2009/Amd.6:2017(E)

iv © ISO/IEC 2017 – All rights reserved

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ISO/IEC 14496-3:2009/Amd.6:2017(E)
Information technology — Coding of audio-visual
objects —
Part 3:
Audio
AMENDMENT 6: Profiles, levels and downmixing method for
22.2 channel programs
Page 31, 1.5.2.3
Replace:
Table 1.10 — Levels for the AAC Profile
Level Max. Max. Max. PCU Max.
channels/ sampling RCU
object rate [kHz]
1 2 24 3 5
2 2 48 6 5
3 NA NA NA NA
4 5 48 19 15
5 5 96 38 15
6 7 48 25 19
7 7 96 50 19
with:
Table 1.10 — Levels for the AAC Profile
Level Max. Max. Max. PCU Max.
channels/ sampling RCU
object rate [kHz]
1 2 24 3 5
2 2 48 6 5
3 NA NA NA NA
4 5 48 19 15
5 5 96 38 15
6 7 48 25 19
7 7 96 50 19
8 22 48 73 56
9 22 96 146 56
© ISO 2017 – All rights reserved  1

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ISO/IEC 14496-3:2009/Amd.6:2017(E)

Page 36, 1.5.2.4
Insert the following new entries into Table 1.14 “audioProfileLevelIndication values” and adapt the
“reserved for ISO use” range accordingly:
0x5D AAC Profile L8
0x5E AAC Profile L9
0x5F - 0x7F reserved for ISO use -
Page 13, 4.4.2.1
Replace:
Table AMD4.3 — Syntax of MPEG4_ancillary_data
Syntax No. of Bits Mnemonic
MPEG4_ancillary_data() {
   ancillary_data_sync; 8 bslbf
   mpeg_audio_type 2 bslbf
   dolby_surround_mode 2 bslbf
   drc_presentation_mode 2 bslbf
   stereo_downmix_mode; 1 bslbf
   bs_info_reserved, set to “0”  1 bslbf
   anc_data_status_reserved, set to “000”  3 bslbf
   downmixing_levels_MPEG4_status 1 bslbf
   ancillary_data_extension_status; 1 bslbf
   audio_coding_and_compression_status 1 bslbf
   coarse_grain_timecode_status 1 bslbf
     fine_grain_timecode_status 1 bslbf
   if (downmixing_levels_MPEG4_status == 1) {
     center_mix_level_on 1 bslbf
     center_mix_level_value 3 bslbf
     surround_mix_level_on 1 bslbf
     surround_mix_level_value 3 bslbf
   }
   If (audio_coding_mode_and_compression_status == 1) {
audio_coding_mode_reserved 7 bslbf
compression_on 1 bslbf
compression_value 8 bslbf
   }
      if(coarse_grain_timecode_status == 1)
     coarse_grain_timecode 16 bslbf
     if(fine_grain_timecode_status == 1)
         fine_grain_timecode 16 bslbf
      if (ancillary_data_extension_status == 1){
     reserved, set to “0”  1 bslbf
     ext_downmixing_levels_status; 1 bslbf
     ext_downmixing_global_gains_status; 1 bslbf
     ext_downmixing_lfe_level_status; 1 bslbf
     reserved, set to “0000” 4 bslbf
         if (ext_downmixing_levels_status == 1){
          dmix_a_idx; 3 bslbf
          dmix_b_idx; 3 bslbf
          reserved, set to “00”  2 bslbf
     }
2 © ISO 2017 – All rights reserved

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ISO/IEC 14496-3:2009/Amd.6:2017(E)

Table (continued)
Syntax No. of Bits Mnemonic
         if (ext_downmixing_global_gains_status == 1) {
          dmx_gain_5_sign; 1 bslbf
          dmx_gain_5_idx; 6 bslbf
          reserved, set to “0”  1 bslbf
          dmx_gain_2_sign; 1 bslbf
          dmx_gain_2_idx; 6 bslbf
          reserved, set to “0”  1 bslbf
     }
         if (ext_downmixing_lfe_level_status == 1) {
          dmix_lfe_idx; 4 bslbf
          reserved, set to “0000”  4 bslbf
     }
   }
}
with:
Table AMD4.3 — Syntax of MPEG4_ancillary_data
Syntax No. of Bits Mnemonic
MPEG4_ancillary_data() {
   ancillary_data_sync; 8 bslbf
   mpeg_audio_type 2 bslbf
   dolby_surround_mode 2 bslbf
   drc_presentation_mode 2 bslbf
   stereo_downmix_mode; 1 bslbf
   bs_info_reserved, set to “0”  1 bslbf
   anc_data_status_reserved, set to “000”  3 bslbf
   downmixing_levels_MPEG4_status 1 bslbf
   ancillary_data_extension_status; 1 bslbf
   audio_coding_and_compression_status 1 bslbf
   coarse_grain_timecode_status 1 bslbf
     fine_grain_timecode_status 1 bslbf
   }
     if (downmixing_levels_MPEG4_status == 1) {
     center_mix_level_on 1 bslbf
     center_mix_level_value 3 bslbf
     surround_mix_level_on 1 bslbf
     surround_mix_level_value 3 bslbf
   }
     If (audio_coding_mode_and_compression_status == 1) {
     audio_coding_mode_reserved 7 bslbf
     compression_on 1 bslbf
     compression_value 8 bslbf
   }
     if(coarse_grain_timecode_status == 1)
     coarse_grain_timecode 16 bslbf
     if(fine_grain_timecode_status == 1)
          fine_grain_timecode 16 bslbf
     if (ancillary_data_extension_status == 1){
© ISO 2017 – All rights reserved  3

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ISO/IEC 14496-3:2009/Amd.6:2017(E)

Table (continued)
Syntax No. of Bits Mnemonic
     reserved, set to “0”  1 bslbf
     ext_downmixing_levels_status; 1 bslbf
     ext_downmixing_global_gains_status; 1 bslbf
     ext_downmixing_lfe_level_status; 1 bslbf
     reserved, set to “0000” 4 bslbf
          if (ext_downmixing_levels_status == 1){
          dmix_a_idx; 3 bslbf
          dmix_b_idx; 3 bslbf
          reserved, set to “00”  2 bslbf
     }
          if (ext_downmixing_global_gains_status == 1) {
          dmx_gain_5_sign; 1 bslbf
          dmx_gain_5_idx; 6 bslbf
          reserved, set to “0”  1 bslbf
          dmx_gain_2_sign; 1 bslbf
          dmx_gain_2_idx; 6 bslbf
          reserved, set to “0”  1 bslbf
     }
          if (ext_downmixing_lfe_level_status == 1) {
          dmix_lfe_idx; 4 bslbf
          reserved, set to “0000”  4 bslbf
     }
   }
   ancillary_data_sync2; 8 bslbf
   ext_downmixing_level_status2; 1 bslbf
     if (ext_downmixing_levels_status2 == 1) {
          dmix_c_idx; 3 bslbf
          dmix_d_idx; 3 bslbf
          dmix_e_idx; 3 bslbf
          dmix_f_idx; 3 bslbf
          dmix_g_idx; 3 bslbf
          dmix_l_idx; 4 bslbf
          reserved, set to “0000” 4 bslbf
     } else {
          reserved, set to “0000000”  7 bslbf
   }
     byte_alignment();
}
4 © ISO 2017 – All rights reserved

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ISO/IEC 14496-3:2009/Amd.6:2017(E)

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