ISO/IEC 23008-8:2015
(Main)Information technology — High efficiency coding and media delivery in heterogeneous environments — Part 8: Conformance specification for HEVC
Information technology — High efficiency coding and media delivery in heterogeneous environments — Part 8: Conformance specification for HEVC
Technologies de l'information — Codage à haute efficacité et livraison des medias dans des environnements hétérogènes — Partie 8: Spécification de conformité du codage video à haute efficacité
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Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 23008-8
First edition
2015-04-15
Information technology — High efficiency
coding and media delivery in
heterogeneous environments —
Part 8:
Conformance Specification for HEVC
Technologies de l'information — Codage à haute efficacité et livraison
des médias dans des environnements hétérogènes —
Partie 8: Spécification de conformité du codage video à haute efficacité
Reference number
ISO/IEC 23008-8:2015(E)
©
ISO/IEC 2015
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ISO/IEC 23008-8:2015(E)
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ISO/IEC 23008-8:2015(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 23008-8 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information, in collaboration with
ITU-T. The identical text is published as ITU-T H.265 (08/2014).
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ISO/IEC 23008-8:2015(E)
HEVC Conformance Testing
1 Scope
1
This Recommendation | International Standard specifies a set of tests and procedures designed to
indicate whether encoders or decoders meet the normative requirements specified in Rec. ITU-T H.265 |
ISO/IEC 23008-2.
2 Normative references
2.1 General
The following Recommendations and International Standards contain provisions which, through reference
in this text, constitute provisions of this Recommendation | International Standard. At the time of
publication, the editions indicated were valid. All Recommendations and Standards are subject to
revision, and parties to agreements based on this Recommendation | International Standard are
encouraged to investigate the possibility of applying the most recent edition of the Recommendations and
Standards listed below. Members of IEC and ISO maintain registers of currently valid International
Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currently valid
ITU-T Recommendations.
2.2 Identical Recommendations | International Standards
– None.
2.3 Paired Recommendations | International Standards equivalent in
technical content
– Recommendation ITU-T H.265 (in force), High efficiency video coding.
– ISO/IEC 23008-2: in force, Information technology – High efficiency video coding and media
delivery in heterogeneous environment – Part 2: High Efficiency Video Coding.
– Recommendation ITU-T H.265.2 (in force), High efficiency coding reference software.
– ISO/IEC 23008-5: in force, Information technology – High efficiency video coding and media
delivery in heterogeneous environment – Part 2: High Efficiency Video Coding Reference Software.
2.4 Additional references
– None.
3 Definitions
For the purposes of this Recommendation | International Standard, the terms, definitions, abbreviations
and symbols specified in Rec. ITU-T H.265 | ISO/IEC 23008-2 (particularly in clauses 3) apply. The
following terms are further clarified for purposes herein as follows.
3.1 bitstream: A Rec. ITU-T H.265 | ISO/IEC 23008-2 video bitstream.
3.2 decoder: A Rec. ITU-T H.265 | ISO/IEC 23008-2 video decoder, i.e., an embodiment of the decoding
process specified by Rec. ITU-T H.265 | ISO/IEC 23008-2. The decoder does not include the display
process, which is outside the scope of this Recommendation | International Standard.
1
This Recommendation | International Standard includes an electronic attachment containing the conformance bitstreams
identified within the text.
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3.3 encoder: An embodiment of a process, not specified in this Recommendation | International Standard
(except in regard to identification of the reference software encoder), that produces a bitstream.
3.4 reference software decoder: The software decoder provided in Rec. ITU-T H.265.2 |
ISO/IEC 23008-5.
3.5 reference software encoder: The software encoder provided in Rec. ITU-T H.265.2 |
ISO/IEC 23008-5.
4 Abbreviations and acronyms
For the purposes of this Recommendation | International Standard, relevant abbreviations and acronyms
are specified in clause 4 of Rec. ITU-T H.265 | ISO/IEC 23008-2.
5 Conventions
For the purposes of this Recommendation | International Standard, relevant conventions are specified in
clause 5 of Rec. ITU-T H.265 | ISO/IEC 23008-2.
6 Conformance testing for ITU-T H.265 | ISO/IEC 23008-2
6.1 Introduction
The following clauses specify normative tests for verifying conformance of video bitstreams as well as
decoders. Those normative tests make use of test data (bitstream test suites) provided as an electronic
annex to this Recommendation | International Standard and the reference software decoder specified in
Rec. ITU-T H.265.2 | ISO/IEC 23008-5.
6.2 Bitstream conformance
Bitstream conformance for Rec. ITU-T H.265 | ISO/IEC 23008-2 is specified by clause C.4 of Rec.
ITU-T H.265 | ISO/IEC 23008-2.
6.3 Decoder conformance
Decoder conformance for Rec. ITU-T H.265 | ISO/IEC 23008-2 is specified by clause C.5 of Rec. ITU-T
H.265 | ISO/IEC 23008-2.
6.4 Procedure to test bitstreams
A bitstream that claims conformance with Rec. ITU-T H.265 | ISO/IEC 23008-2 shall pass the following
normative test.
The bitstream shall be decoded by processing it with the reference software decoder. When processed by
the reference software decoder, the bitstream shall not cause any error or non-conformance messages to
be reported by the reference software decoder. This test should not be applied to bitstreams that are
known to contain errors introduced by transmission, as such errors are highly likely to result in bitstreams
that lack conformance to Rec. ITU-T H.265 | ISO/IEC 23008-2.
Successfully passing the reference software decoder test provides only a strong presumption that the
bitstream under test is conforming to the video layer, i.e., that it does indeed meet all the requirements for
the video layer (except Annexes C, D and E) specified in Rec. ITU-T H.265 | ISO/IEC 23008-2 that are
tested by the reference software decoder.
Additional tests may be necessary to more thoroughly check that the bitstream properly meets all the
requirements specified in Rec. ITU-T H.265 | ISO/IEC 23008-2 including the hypothetical reference
decoder (HRD) conformance (based on Annexes C, D and E). These complementary tests may be
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performed using other video bitstream verifiers that perform more complete tests than those implemented
by the reference software decoder.
Rec. ITU-T H.265 | ISO/IEC 23008-2 contains several informative recommendations that are not an
integral part of that Recommendation | International Standard. When testing a bitstream for conformance,
it may also be useful to test whether or not the bitstream follows those recommendations.
To check correctness of a bitstream, it is necessary to parse the entire bitstream and to extract all the
syntax elements and other values derived from those syntactic elements and used by the decoding process
specified in Rec. ITU-T H.265 | ISO/IEC 23008-2.
A verifier may not necessarily perform all stages of the decoding process specified in Rec. ITU-T H.265 |
ISO/IEC 23008-2 in order to verify bitstream correctness. Many tests can be performed on syntax
elements in a state prior to their use in some processing stages.
6.5 Procedure to test decoder conformance
6.5.1 Conformance bitstreams
A bitstream has values of general_profile_idc, general_tier_flag, and general_level_idc corresponding to
a set of specified constraints on a bitstream for which a decoder conforming to a specified profile, tier,
and level is required in Annex A of Rec. ITU-T H.265 | ISO/IEC 23008-2 to properly perform the
decoding process.
6.5.2 Contents of the bitstream file
The conformance bitstreams are included in this Recommendation | International Standard as an
electronic attachment. The following information is included in a single zipped file for each such
bitstream.
– bitstream;
– decoded pictures or hashes of decoded pictures (may not be present);
– short description of the bitstream;
– trace file (results while decoding the bitstream, in ASCII format).
In cases where the decoded pictures or hashes of decoded pictures are not available, the reference
software decoder shall be used to generate the necessary reference decoded pictures from the bitstream.
6.5.3 Requirements on output of the decoding process and timing
Two classes of decoder conformance are specified:
– output order conformance; and
– output timing conformance.
The output of the decoding process is specified in clause 8 and Annex C of Rec. ITU-T H.265 |
ISO/IEC 23008-2.
For output order conformance, it is a requirement that all of the decoded pictures specified for output in
Annex C of Rec. ITU-T H.265 | ISO/IEC 23008-2 shall be output by a conforming decoder in the
specified order and that the values of the decoded samples in all of the pictures that are output shall be
(exactly equal to) the values specified in clause 8 of Rec. ITU-T H.265 | ISO/IEC 23008-2.
For output timing conformance, it is a requirement that a conforming decoder shall also output the
decoded samples at the rates and times specified in Annex C of Rec. ITU-T H.265 | ISO/IEC 23008-2.
The display process, which ordinarily follows the output of the decoding process, is outside the scope of
this Recommendation | International Standard.
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6.5.4 Recommendations (informative)
This clause does not form an integral part of this Recommendation | International Standard.
In addition to the requirements, it is desirable that conforming decoders implement various informative
recommendations specified in Rec. ITU-T H.265 | ISO/IEC 23008-2 that are not an integral part of that
Recommendation | International Standard. This clause discusses some of these recommendations.
It is recommended that a conforming decoder be able to resume the decoding process as soon as possible
after the loss or corruption of part of a bitstream. In most cases it is possible to resume decoding at the
next start code or slice header. It is recommended that a conforming decoder be able to perform
concealment for the coding tree blocks or video packets for which all the coded data has not been
received.
6.5.5 Static tests for output order conformance
Static tests of a video decoder require testing of the decoded samples. This clause will explain how this
test can be accomplished when the decoded samples at the output of the decoding process are available. It
may not be possible to perform this type of test with a production decoder (due to the lack of an
appropriate accessible interface in the design at which to perform the test). In that case this test should be
performed by the manufacturer during the design and development phase. Static tests are used for testing
the decoding process. The test will check that the values of the samples decoded by the decoder under test
shall be identical to the values of the samples decoded by the reference decoder. When a hash of the
values of the samples of the decoded pictures is attached to the bitstream file, a corresponding hash
operation performed on the values of the samples of the decoded pictures produced by the decoder under
test shall produce the same results.
6.5.6 Dynamic tests for output timing conformance
Dynamic tests are applied to check that all the decoded samples are output and that the timing of the
output of the decoder's decoded samples conforms to the specification of clause 8 and Annex C of Rec.
ITU-T H.265 | ISO/IEC 23008-2, and to verify that the HRD models (as specified by the CPB and DPB
specification in Annex C of Rec. ITU-T H.265 | ISO/IEC 23008-2) are not violated when the bits of the
bitstream are delivered at the proper rate.
The dynamic test is often easier to perform on a complete decoding system, which may include a systems
decoder, a video decoder and a display process. It may be possible to record the output of the display
process and to check that display order and timing of decoded pictures are correct at the output of the
display process. However, since the display process is not within the normative scope of Rec. ITU-T
H.265 | ISO/IEC 23008-2, there may be cases where the output of the display process differs in timing or
value even though the video decoder is conforming. In this case, the output of the video decoder itself
(before the display process) would need to be captured in order to perform the dynamic tests on the video
decoder. In particular the output order and timing of the decoded pictures shall be correct.
If buffering period and picture timing SEI messages are included in the test bitstream, HRD conformance
shall be verified using the values of initial_cpb_removal_delay, initial_cpb_removal_delay_offset,
cpb_removal_delay and dpb_removal_delay that are included in the bitstream.
If buffering period and picture timing SEI messages are not included in the bitstream, the following
inferences shall be made to generate the missing parameters:
– fixed_pic_rate_flag shall be inferred to be equal to 1.
– low_delay_hrd_flag shall be inferred to be equal to 0.
– cbr_flag shall be inferred to be equal to 0.
– The frame rate of the bitstream shall be inferred to be equal to the frame rate value specified in the
corresponding table of clause 6.7, where the bitstream is listed. If this is missing, then a frame rate of
either 25 or 30000 ÷ 1001 can be inferred.
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– time_scale shall be set equal to 90 000 and the value of num_units_in_tick shall be computed based
on field rate (twice the frame rate).
– The bit rate of the bitstream shall be inferred to be equal to the maximum value for the level specified
in Table A-1 in Rec. ITU-T H.265 | ISO/IEC 23008-2.
– CPB and DPB sizes shall be inferred to be equal to the maximum value for the level specified in
Table A-1 in Rec. ITU-T H.265 | ISO/IEC 23008-2.
With the above inferences, the HRD shall be operated as follows.
– The CPB is filled starting at time t = 0, until it is full, before removal of the first access unit. This
means that the initial_cpb_removal_delay shall be inferred to be equal to the total CPB buffer size
divided by the bit rate divided by 90000 (rounded downwards) and initial_cpb_removal_delay_offset
shall be inferred to be equal to zero.
– The first access unit is removed at time t = initial_cpb_removal_delay ÷ 90000 and subsequent access
units are removed at intervals based on the frame distance, i.e., 2 * (90000 ÷ num_units_in_tick) or
the field distance, i.e., (90000 ÷ num_units_in_tick), depending on whether the pictures in the
bitstream are indicated to represent complete frames or individual fields of such frames.
– Using these inferences, the CPB will not overflow or underflow and the DPB will not overflow.
6.5.7 Decoder conformance test of a particular profile, tier, and level
In order for a decoder of a particular profile, tier, and level to claim output order conformance to Rec.
ITU-T H.265 | ISO/IEC 23008-2 as specified by this Recommendation | International Standard, the
decoder shall successfully pass the static test specified in clause 6.5.5 with all the bitstreams of the
normative test suite specified for testing decoders of this particular profile, tier, and level combination.
In order for a decoder of a particular profile, tier, and level to claim output timing conformance to Rec.
ITU-T H.265 | ISO/IEC 23008-2 as specified by this Recommendation | International Standard, the
decoder shall successfully pass both the static test specified in clause 6.5.5 and the dynamic test specified
in clause 6.5.6 with all the bitstreams of the normative test suite specified for testing decoders of this
particular profile, tier, and level. Table 1 specifies the normative test suites for each profile, tier, and level
combination. The test suite for a particular profile, tier, and level combination is the list of bitstreams that
are marked with an 'X' in the column corresponding to that profile, tier, and level combination. In the
column 'Main tier', 'X' indicate the bitstream is for Main tier. A decoder conformed to Main tier shall be
capable of decoding the specified bitstreams, among the testing profile-level combination, indicated by
'X' at 'Main tier' column in Table 1. A decoder conformed to High tier shall be capable of decoding all the
specified bitstreams, among the testing profile-level combination, in Table 1.
'X' indicates that the bitstream is designed to test both the dynamic and static conformance of the decoder.
The bitstream column specifies the bitstream used for each test.
A decoder that conforms to the Main profile, Main Still Picture profile, or Main 10 profile at a specific
level shall be capable of decoding the specified bitstreams in Table 1.
6.6 Specification of the test bitstreams
6.6.1 General
Some characteristics of each bitstream listed in Table 1 are specified in this clause. In Table 1, the value
"29.97" shall be interpreted as an approximation of an exact value of 30000 ÷ 1001 and the value "59.94"
shall be interpreted as an approximation of an exact value of 60000 ÷ 1001.
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6.6.2 Test bitstreams – Block structure
6.6.2.1 Test bitstreams #STRUCT_A
Specification: All slices are coded as I, P or B slices. Each picture contains one slice. Various CTU and
maximum CU sizes are used.
Functional stage: Test the reconstruction process of slices.
Purpose: Check that the decoder can properly decode I, P and B slices with various CTU and maximum
CU sizes.
6.6.2.2 Test bitstreams #STRUCT_B
Specification: All slices are coded as I, P or B slices. Each picture contains one slice. Various CTU and
minimum CU sizes are used.
Functional stage: Test the reconstruction process of slices.
Purpose: Check that the decoder can properly decode I, P and B slices with various CTU and minimum
CU sizes.
6.6.3 Test bitstreams – Intra coding
6.6.3.1 Test bitstreams #IPRED_A, #IPRED_B, and #IPRED_C
Specification: All slices are coded as I slices. Each picture contains one slice. All intra prediction modes
(35 modes for each of luma 32x32, luma 16x16, luma 8x8, luma 4x4, chroma 16x16, chroma 8x8 and
chroma 4x4, for a total 245 modes) are used. The IPRED_B bitstream contains only one picture, and
conforms to the Main Still Picture profile.
Functional stage: Test the reconstruction process of I slices.
Purpose: Check that the decoder can properly decode I slices with all intra prediction modes.
6.6.3.2 Test bitstreams #CIP_A
Specification: The bitstream contains one I slice and one B slice, using one slice per picture. Both SAO
and the deblocking filter are disabled.
Functional stage: Test the reference sample substitution process for intra sample prediction.
Purpose: Check that the decoder can properly decode slices of coded pictures containing intra TUs with
unavailable samples for intra prediction.
6.6.3.3 Test bitstreams #CIP_B
Specification: The bitstream contains an I-picture and 4 P-pictures. Each picture contains only one slice.
constrained_intra_pred_flag is equal to 1.
Functional stage: Test the reference sample substitution process for intra sample prediction.
Purpose: Check that the decoder can properly decode slices of coded pictures containing intra TUs with
unavailable samples for intra prediction.
6.6.3.4 Test bitstreams #CIP_C
Specification: The bitstream contains one I slice and one B slice, using more than one slice per picture.
Both SAO and the deblocking filter are disabled.
Functional stage: Test the reference sample substitution process for intra sample prediction.
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Purpose: Check that the decoder can properly decode slices of coded pictures containing intra TUs with
unavailable samples for intra prediction.
6.6.4 Test bitstreams – Inter frame coding
6.6.4.1 Test bitstreams #MERGE_A
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
five_minus_max_num_merge_cand is set equal to 4.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode with the maximum number of merging candidates
equal to any value permitted by the standard (i.e. 1, 2, 3, 4, 5).
6.6.4.2 Test bitstreams #MERGE_B
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
five_minus_max_num_merge_cand is set equal to 3.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode with the maximum number of merging candidates
equal to any value permitted by the standard (i.e. 1, 2, 3, 4, 5).
6.6.4.3 Test bitstreams #MERGE_C
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
five_minus_max_num_merge_cand is set equal to 2.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode with the maximum number of merging candidates
equal to any value permitted by the standard (i.e. 1, 2, 3, 4, 5).
6.6.4.4 Test bitstreams #MERGE_D
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
five_minus_max_num_merge_cand is set equal to 1.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode with the maximum number of merging candidates
equal to any value permitted by the standard (i.e. 1, 2, 3, 4, 5).
6.6.4.5 Test bitstreams #MERGE_E
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
five_minus_max_num_merge_cand is set equal to 0.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode with the maximum number of merging candidates
equal to any value permitted by the standard (i.e. 1, 2, 3, 4, 5).
6.6.4.6 Test bitstreams #MERGE_F
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
sps_temporal_mvp_enable_flag is equal to 0 and five_minus_max_num_merge_cand is equal to 0.
Functional stage: Test the reconstruction process of motion vector prediction.
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Purpose: Check that the decoder can properly decode when the temporal merging candidate is not
included in the merge candidate set.
6.6.4.7 Test bitstreams #MERGE_G
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
five_minus_max_num_merge_cand is set equal to 0.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode with merge index ranging from 0 to 4.
6.6.4.8 Test bitstreams #PMERGE_A
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
log2_parallel_merge_level_minus2 is set equal to 0.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode parallel merge level values permitted by the
standard (i.e. 2, 3, 4, 5, 6 for luma CTB size 64x64).
6.6.4.9 Test bitstreams #PMERGE_B
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
log2_parallel_merge_level_minus2 is set equal to 1.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode parallel merge level values permitted by the
standard (i.e. 2, 3, 4, 5, 6 for luma CTB size 64x64).
6.6.4.10 Test bitstreams #PMERGE_C
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
log2_parallel_merge_level_minus2 is set equal to 2.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode the parallel merge level values permitted by the
standard (i.e. 2, 3, 4, 5, 6 for luma CTB size 64x64).
6.6.4.11 Test bitstreams #PMERGE_D
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
log2_parallel_merge_level_minus2 is set equal to 3.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode the parallel merge level values permitted by the
standard (i.e. 2, 3, 4, 5, 6 for luma CTB size 64x64).
6.6.4.12 Test bitstreams #PMERGE_E
Specification: All slices are coded as I or B slices. Each picture contains only one slice.
log2_parallel_merge_level_minus2 is set equal to 4.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode the parallel merge level values permitted by the
standard (i.e. 2, 3, 4, 5, 6 for luma CTB size 64x64).
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6.6.4.13 Test bitstreams #AMVP_A
Specification: All slices are coded as I or P slices. Each picture contains only one slice.
num_ref_idx_l0_default_active_minus1 is equal to 0, num_ref_idx_l1_default_active_minus1 is equal to
0 and num_ref_idx_active_override_flag is equal to 0.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode when motion vector scaling is not needed for
spatial motion vector prediction candidate generation (all inter-coded PUs within the same slice have the
same inter_pred_idc and ref_idx_l0).
6.6.4.14 Test bitstreams #AMVP_B
Specification: All slices are coded as I or B slices. Each picture contains only one slice. Multiple
reference pictures are used. For some slices, num_ref_idx_l0_default_active_minus1 is equal to 3 and
num_ref_idx_active_override_flag is equal to 0. For other B slices,
num_ref_idx_l0_default_active_minus1 is equal to 1, num_ref_idx_l1_default_active_minus1 is equal to
1 and num_ref_idx_active_override_flag is equal to 0.
Functional stage: Test the reconstruction process of motion vector prediction.
Purpose: Check that the decoder can properly decode when motion vector scaling is not needed for
spatial motion vector prediction candidate generation.
6.6.4.15 Test bitstreams #AMVP_C
Specification: All slices are coded as I or P slices. Each picture contains only one slice.
Functional stage: Test the reconstruction process of motion vector prediction, specifically, motion vector
prediction during the low delay condition.
Purpose: Check that the decoder can properly decode when motion vector scaling is not needed for
spatial motion vector prediction candidate generation.
6.6.4.16 Test bitstreams #TMVP_A
Specification: Each picture contains only one slice. slice_temporal_mvp_enable_flag is set equal to 0 for
picture
...
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