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5.1.2.4 Item location box
For metadata items with a handler type defined in the present document, this clause shall apply. Each metadata box shall contain an item location box 'iloc', as defined in clause 8.11.3 of ISO/IEC 14496-12 [30]. For each metadata item present, there shall be an entry in the item location box that maps the descriptive m...
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5.1.2.5 Location of the metadata box
It is recommended that the metadata box referencing the mandatory basic description (and thus having a handler type of 'dmbd') as well as the mandatory basic description itself is located in the file as soon after the file type box as is possible without contradicting brand requirements. NOTE 1: In the case of a file w...
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5.1.2.6 Storage of XML
For metadata items with a handler type defined in the present document, this clause shall apply. The XML data shall be stored in one or more media data container boxes. The XML box as defined in clause 8.11.2 of ISO/IEC 14496-12 [30] shall not be used. Each XML document shall be stored as a separate metadata item. A de...
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5.1.2.7 Multiple concurrent metadata schemes
If relevant descriptive metadata is to be stored in schemas other than the schema of the mandatory basic description, this metadata shall be stored in metadata boxes in the additional metadata container box 'meco'. Data formatted according to a specific schema shall be stored in a separate metadata box containing only ...
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5.1.3 Handling descriptive metadata updates
The file shall only contain one version of a descriptive metadata item as stored according to the present document (e.g. one version of the description of a TV program). It is possible that between creating a file and the recording completing the descriptive metadata item is updated. In this case the recording device s...
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5.1.4 Mandatory basic description
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5.1.4.1 Overview
The mandatory metadata description is designed to be easily generated from either TV-Anytime [12] or IPDC ESG [7] based metadata descriptions. This basic description provides an interoperability point to assist in the interchange of content between devices. The basic description can take one of two forms. The first for...
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5.1.4.2 XML schema
Mandatory metadata shall be a schema valid XML document with the schema whose namespace is urn:dvb:metadata:schema:fileContentItemDescription:2007. The relevant schema is provided as attachments to this document, and they are available from http://www.dvb.org/metadata/schema. The schema forms part of the normative spec...
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5.1.4.3 FileContentItemInformation
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5.1.4.3.1 Overview
The FileContentItemInformation element shall be used as the root element of the instance document where a recording has been made of a program, or primarily of a program. This element shall reflect the main program that is recorded. Where there are multiple main programs recorded, there may be multiple instance documen...
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5.1.4.3.2 ContentItemInformation
5.1.4.3.2.1 Overview This mandatory element shall contain the description of the content item. This element is structurally similar to the urn:tva:metadata:2007 ProgramInformationType [12] and the urn:dvb:ipdc:esg:2005 ContentType [7]. 5.1.4.3.2.2 BasicDescription This mandatory element shall contain at least one Title...
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5.1.4.3.3 BroadcastServiceName
If present, this optional element shall be used to hold the name of the service from which the recording was made.
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5.1.4.3.4 ScheduleEvent
If present, this optional element shall be used to hold the scheduled event information of the item described in the ContentItemInformation element. Although this element is defined using the urn:tva:metadata:2007 ScheduleEventType, the corresponding urn:dvb:ipdc:esg:2005 ScheduleEventType may be additionally present i...
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5.1.4.4 SelfRecordingInfo
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5.1.4.4.1 Overview
Where the FileContentItemInformation cannot be used, then the SelfRecordingInfo shall be used.
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5.1.4.4.2 RecordingDescription
This mandatory element shall contain a description of the recording. NOTE: The details of this textual field are at the discretion of the recording device, but are intended to provide useful information on the recording, such as for instance the time and date it took place and the channel(s) that were recorded.
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5.1.4.4.3 RecordingLocation
If present, this optional element shall be used to contain the location at which the recording was initiated.
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5.1.5 Other descriptive metadata
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5.1.5.1 SI
If an MPEG-2 Transport Stream [27] is encapsulated in a DVB File (as described in clause 5.2.1.2), any DVB Service Information according to EN 300 468 [1] may be stored in this encapsulation as received. Any descriptive information carried by the DVB Service Information that is relevant and that can be stored according...
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5.1.6 Associating descriptive metadata items with content
The time at which a particular descriptive metadata item is valid is signalled using the indexing mechanism defined in clause 5.3.5.5. If no such indexes are present in the file, then the primary metadata item shall be valid for the entire file. It is strongly recommended that if more than one descriptive metadata item...
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5.2 Media
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5.2.1 Reception hint tracks
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5.2.1.1 General
Reception hint tracks, as specified in [41], may be used when one or more packet streams of data are recorded. Reception hint tracks indicate the order, reception timing, and contents of the received packets among other things. NOTE 1: Players may reproduce the packet stream that was received based on the reception hin...
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5.2.1.2 Transport Stream reception hint track
MPEG-2 Transport Stream [27] (commonly abbreviated as MPEG2-TS or MPEG-2 TS) stored in accordance with the present document shall comply with ISO/IEC 14496-12:2008 AMD.1 [41], subject to the following constraints: a) The MPEG2TSReceptionSampleEntry 'rm2t' shall be used and the MPEG2TSServerSampleEntry 'sm2t' shall not ...
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5.2.1.2.1 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.2.2 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.2.3 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.2.4 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.2.5 Additional Transport Stream reception hint track specific boxes
5.2.1.2.5.1 Timing Jitter Limits Box The TimingJitterLimitsBox box may be used to signal the maximum absolute jitter in media timescale units between the value calculated via media time (as encoded in the stts) and that of the original source. 5.2.1.2.5.1.1 Syntax class TimingJitterLimitsBox() extends FullBox('tjit', f...
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5.2.1.3 Protected MPEG 2 Transport Stream reception hint track
Where mechanisms such as CPCM require the marking of an MPEG-2 Transport Stream [27] as protected, the ProtectedMPEG2TransportStreamEntry box and mechanisms defined in ISO/IEC 14496-12:2008/AMD.1 [41] shall be used. NOTE: As the present document only defines usage of the 'rm2t' SampleDescription, the 'frma' box necessa...
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5.2.1.3.1 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.3.2 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.3.3 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.4 RTP reception hint track
The specification for RTP reception hint tracks as specified in [41] applies with the following additional constraints. The timescale in the media header box of an RTP reception hint track shall be identical to the timescale in the timescale entry box in the 'rrtp' hint sample entry. NOTE 1: The timescale entry box is ...
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5.2.1.4.1 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.4.2 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.4.3 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.5 Protected RTP reception hint track
The specification for protected RTP reception hint tracks as specified in [41] applies with the following additional constraints. If the protection scheme information is already present in the SDP information, then this shall not be stored in the scheme information box (i.e. if there is no protection scheme information...
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5.2.1.5.1 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.5.2 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.6 RTCP reception hint track
The specification for RTCP reception hint tracks as specified in [41] applies.
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5.2.1.6.1 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.6.2 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.6.3 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41].
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5.2.1.6.4 (void)
See ISO/IEC 14496-12:2008 AMD.1 [41]. ETSI ETSI TS 102 833 V1.2.1 (2011-03) 28
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5.2.2 Elementary streams
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5.2.2.1 Video
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5.2.2.1.1 H.264/AVC
H.264/AVC [37] elementary streams stored in accordance with the present document shall comply with ISO/IEC 14496-15 [32]. H.264/AVC [37] elementary streams stored in accordance with the present document shall also comply with coding specifications detailed in TS 101 154 [3] or TS 102 005 [4]. NOTE: Scalable Video Codin...
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5.2.2.1.2 VC-1
VC-1 [35] elementary streams stored in accordance with the present document shall comply with SMPTE RP2025 [36]. VC-1 [35] elementary streams stored in accordance with the present document shall also comply with coding specifications detailed in TS 101 154 [3] or TS 102 005 [4].
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5.2.2.2 Audio
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5.2.2.2.1 MPEG-4 AAC profile, MPEG-4 HE AAC profile and MPEG-4 HE AAC v2 profile
MPEG-4 AAC profile elementary streams, in optional combination with MPEG Surround [42], MPEG-4 HE AAC profile elementary streams, in optional combination with MPEG Surround [42], and MPEG-4 HE AAC v2 profile elementary streams, in optional combination with MPEG Surround [42], [33] stored in accordance with the present ...
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5.2.2.2.2 AMR-WB+
AMR-WB+ [17] elementary streams stored in accordance with the present document shall comply with TS 126 244 [15]. AMR-WB+ [17] elementary streams stored in accordance with the present document shall also comply with coding specifications detailed in TS 102 005 [4].
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5.2.2.2.3 AC-3 and Enhanced AC-3
AC-3 elementary streams and Enhanced AC-3 elementary streams [6] stored in accordance with the present document shall comply with annex F of TS 102 366 [6]. AC-3 elementary streams and Enhanced AC-3 elementary streams stored in accordance with the present document shall also comply with coding specifications detailed i...
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5.2.2.3 Other
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5.2.2.3.1 Timed text
Timed text [16] elementary streams stored in accordance with the present document shall comply with TS 126 244 [15]. Timed text elementary streams stored in accordance with the present document shall also comply with coding specifications detailed in TS 102 472 [8].
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5.3 Indexing
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5.3.1 Introduction (informative)
Indexes are metadata that describe an existing track, which is usually a reception hint track. The metadata contained in indexes would otherwise be available only by parsing a rather large portion of the samples of this track (e.g. the polarity bits of scrambling fields) or is not available at all (e.g. packet corrupti...
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5.3.2 Common indexing structures
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5.3.2.1 General
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5.3.2.1.1 Index configuration and index characteristics
The serial indexing mechanism is based on timed metadata tracks and the parallel indexing mechanism is based on an extended version of sample groups. The indexes that can be included in a timed metadata track are described by sample entries included in the sample description box. The indexes represented by a sample gro...
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5.3.2.1.2 Index event and index element
An index event contains one occurrence of an index. An index event can be parsed independently without parsing other index events. The semantics of an index event are determined by its index type. The syntax of an index event may include instance information (instance_info), a grouping index, and a payload (index_paylo...
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5.3.2.1.3 Movie-level indexes
An index may semantically apply to all reception hint tracks and media tracks present in a file. Such an index is referred to as a movie-level index, whereas indexes applied to a single track only are referred to as track-level indexes. All movie-level indexes shall be associated with a single track, referred to as the...
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5.3.2.1.4 Index validity timing
Index events are linked to either media tracks or reception hint tracks through timing and sample numbering. The index inaccuracy structure (clause 5.3.2.4) indicates how accurately the provided time and sample number relationship presents the actual occurrence of the index event. A track-level index event becomes acti...
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5.3.2.2 Index configuration
5.3.2.2.1 Syntax aligned(8) class IndexConfiguration { IndexCharacteristics index_characteristics; unsigned int(13) reserved = 0; unsigned int(1) ic_instance_info_in_event_flag; unsigned int(1) ic_grouping_index_in_event_flag; unsigned int(1) ic_multi_element_event_flag; unsigned int(16) ic_index_element_length; unsign...
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5.3.2.3 Index characteristics
5.3.2.3.1 Syntax aligned(8) class IndexCharacteristics { unsigned int(32) index_type; if (index_type == 'uuid') { unsigned int(8) uuid[16]; } unsigned int(32) instance_info; unsigned int(7) reserved = 0; unsigned int(1) any_instance_info_flag; unsigned int(8) version; unsigned int(16) event_payload_length; unsigned int...
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5.3.2.4 Index inaccuracy
5.3.2.4.1 General The index inaccuracy structure is stored in the static information of the index characteristics structure. There are two types of inaccuracy indicated, sample and time inaccuracy. Index events are linked to either media tracks or reception hint tracks through sample numbers or time, as specified in cl...
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5.3.2.5 Index event
5.3.2.5.1 Syntax abstract class IndexEvent(index_type, event_payload_length) { if (ic_instance_info_in_event_flag) unsigned int(32) instance_info; if (ic_grouping_index_in_event_flag) unsigned int(32) grouping_index; else { if (event_payload_length == 0xFFFF) { unsigned int(16) var_payload_length; unsigned int(8) index...
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5.3.2.6 Index element payload
5.3.2.6.1 Syntax class IndexElementPayload(index_type, element_payload_length) { if (ic_multi_element_event_flag) { unsigned int(8) cont_number; unsigned int(8) last_cont_number; this_payload_length = element_payload_length - 2; } else this_payload_length = element_payload_length; unsigned int(8) index_event_data[this_...
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5.3.3 Serial indexing
The serial indexing mechanism specified in this clause enables storage of different types of indexes in an interleaved manner.
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5.3.3.1 General
Zero or more timed metadata tracks storing indexes may be present in a file. A timed metadata track storing indexes is referred to as an index track. One sample in an index track contains one or more index events, each represented by one or more index elements. Index tracks are linked to the tracks they describe by tra...
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5.3.3.2 Sample description format
5.3.3.2.1 General A DVB track-level index sample entry or a DVB movie-level index sample entry indicates the types of indexes that may be present in samples associated with this sample entry included in a track-level index track or a movie-level index track, respectively. If there are many timed metadata tracks for a r...
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5.3.3.3 Sample format
5.3.3.3.1 Syntax aligned(8) class IndexSample { do { unsigned int(32) index_type; unsigned int(32) relative_sample_number; IndexElementPayload(index_type, ic_index_element_length-8) element_payload; } while (more_data_in_sample()); } 5.3.3.3.2 Semantics A sample contains one or more index elements and the index element...
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5.3.3.4 Mutual relations of serial indexing structures (informative)
Figure 1 illustrates the relations of indexing structures for serial indexing. The figure illustrates the structure of a chunk of index samples. The first illustrated index sample contains two index elements, whose length is indicated in the associated sample entry containing an index configuration structure. The numbe...
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5.3.4 Parallel indexing
The parallel indexing mechanism specified in this clause enables type-wise organization of indexes into a file.
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5.3.4.1 General
The parallel indexing mechanism of the DVB File Format uses an extended version of the sample grouping mechanism of the ISO base media file format - the DVB sample to group box and the DVB sample group description box of the DVB File Format correspond to the sample to group box and the sample group description box of t...
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5.3.4.2 DVB sample to group box
5.3.4.2.1 General The DVB sample to group box is used to couple samples with index events of certain index type (index_type) and index instantiation information (instance_info). The box contains a loop, where each loop entry includes an index payload for one or more consecutive samples. DVB sample to group boxes are co...
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5.3.4.3 DVB sample group description box
5.3.4.3.1 General There shall be one DVB sample group description box having particular values of index type and instance information for the DVB sample to group boxes having the same values of index type and instance information, respectively. The DVB sample group description box contains the index configuration for t...
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5.3.4.4 Mutual relations of parallel indexing structures (informative)
Figure 2 illustrates the relations of indexing structures for parallel indexing. A file may contain many DVB sample to group boxes 'dstg'. A DVB sample to group box starts with index_type and instance_information fields, the values of which are used to refer to a DVB sample group description box 'dsgd' with identical v...
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5.3.5 Index data structures
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5.3.5.1 Use of length fields
In the definitions below, no event_payload_length fields are given (as carried in the index characteristics structure or in the event itself as the var_payload_length field where the length may vary between instances of the event type). The event_payload_length field value shall be greater than or equal to the length d...
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5.3.5.2 Use of instance information
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5.3.5.2.1 Introduction
The 32-bit value of instance information (instance_info) is structured according to one the syntax structures specified subsequently. The syntax and semantics of instance_info depend on index type used. Two structures for instance_info are specified: MPEG2-TS instance information and instance information for timed desc...
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5.3.5.2.2 MPEG2-TS instance information
5.3.5.2.2.1 Syntax class TS_instance_info { unsigned int(3) reserved = 0; unsigned int(13) pid; unsigned int(16) reserved = 0; }; 5.3.5.2.2.2 Semantics pid is a 13-bit unsigned integer which contains the PID of the packet associated with the index event.
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5.3.5.2.3 Timed descriptive metadata instance information
5.3.5.2.3.1 Syntax aligned(8) class timed_metadata_instance_info { unsigned int(32) handler_type; } 5.3.5.2.3.2 Semantics handler_type contains the 4CC of the format of descriptive metadata that is indexed by index events using this instance information, as specified in clause 5.1.2.2. This is used by the player to loc...
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5.3.5.3 Index types
Table 8 identifies the index types that are used, and the clause specifying the related index structures. Those events whose index_type value starts with 'ts' shall only occur where the indexed track is of type 'rm2t' or 'pm2t'. Timed descriptive metadata, SDP index, and bookmark are movie-level indexes. An index of ty...
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5.3.5.4 Transport stream indexes
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5.3.5.4.1 Polarity change event
5.3.5.4.1.1 General The polarity change event index contains the new polarity value which applies to the first MPEG-2 TS packet with this new polarity. A polarity change index shall only be deemed to occur when the polarity of a stream of packets on a given PID changes, and not when it changes between packets of differ...
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5.3.5.4.2 CA event
5.3.5.4.2.1 General The CA event index contains a new CA message and indicates the MPEG-2 TS packet where this new CA message starts. A new CA event index shall only be deemed to occur when a previously unseen CA message arrives, and not when previously seen CA messages are interleaved. 5.3.5.4.2.2 4CC This event shall...
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5.3.5.4.3 PCR event
5.3.5.4.3.1 General The PCR event index contains the PCR value carried in the adaptation field of the indexed MPEG-2 TS packet. Where PCR events are supported, a PCR event need not be generated for every single PCR in the stream. However, if the discontinuity_indicator flag in the MPEG-2 TS packet for which the PCR eve...
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5.3.5.4.4 Table update event
5.3.5.4.4.1 General The table update event index occurs when an updated version of a table occurs, and shall index the MPEG-2 TS packet that contains the first byte of the new table. Optionally, various fields, including the entire section data, may be piggybacked in the event. NOTE: It is not a requirement that all ta...
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5.3.5.4.5 Synchronized Auxiliary Data event
5.3.5.4.5.1 General The Synchronized Auxiliary Data (SAD) event provides a means to index the presence of SAD descriptors in the recorded stream, and store them into the index. SAD is defined in TS 102 823 [13]. ETSI ETSI TS 102 833 V1.2.1 (2011-03) 47 5.3.5.4.5.2 4CC This event shall be signalled by the 4CC 'sadi'. 5....
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5.3.5.4.6 Video index event
5.3.5.4.6.1 General The video index event is used to signal the location of the start of video pictures, and potentially indicate the properties of these pictures. It is not required that every single video picture is indexed. For instance, some applications may wish to only index a subset of frames that meet certain p...
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5.3.5.4.7 AU_information event
5.3.5.4.7.1 General The AU_information event signals the presence of an AU_information structure in the adaptation layer of a transport packet, as defined in annex D of TS 101 154 [3]. It also allows for the information contained to be optionally carried in the event payload. 5.3.5.4.7.2 4CC This event shall be signall...
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5.3.5.5 Timed descriptive metadata
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5.3.5.5.1 Timed descriptive metadata index
5.3.5.5.1.1 General This clause specifies indexes related to descriptive metadata fragment specified in clause 5.1. A timed descriptive metadata index event provides a definitive set of metadata items of the specified handler type that are valid at the declared time. 5.3.5.5.1.2 4CC This event shall be signalled by the...
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5.3.5.6 Bookmark index
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5.3.5.6.1 Introduction (informative)
Two types of bookmarks can be present in a DVB file: pre-authored and user-defined. In the case a DVB file is transferred to a DVB player device (instead of streaming the content of the file to DVB receivers), pre-authored bookmarks can be inserted into the file by a content provider. Pre-authored bookmarks can be used...
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5.3.5.6.2 General
The bookmark index shall not be used with serial indexing. A conforming file shall contain a DVB sample group description box with index type 'bkmr' in the movie-level index base track. The DVB sample group description box with index type 'bkmr' shall contain at least one sample group description entry. The first entry...
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5.3.5.6.3 Syntax for sample group description entry
class DVBBookmarkEntry { unsigned int(7) reserved = 0; unsigned int(1) read_only_flag; unsigned int(8) reference_count; unsigned int(16) num_languages; for (i = 0; i <= num_languages; i++) { const bit(1) pad = 0; unsigned int(5) language[3]; // ISO-639-2/T language code string bookmark; } } ETSI ETSI TS 102 833 V1.2.1 ...
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5.3.5.6.4 Semantics for sample group description entry
read_only_flag indicates recommendations how the associated sample group description entry and index events mapped to it should be processed when a file is modified. read_only_flag equal to 0 specifies that any modifications are allowed concerning this sample group description entry and index events mapped to it. read_...