A SCTE 35 Decoder for Mpeg-TS video, and Hex or Base64 messages

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  • License: MIT License
  • Author: fu-corp
  • Requires: Python >=3.6
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Project description

threefive

I welcome all feedback and ideas.

SCTE35 Decoder

  • Parse SCTE 35 messages from Mpeg Transport Streams and Binary files.
  • Parse SCTE 35 messages encoded in Base64, Binary, or Hex.

Fast Start Directions.

2019 Specification

SCTE35 2019 specification

Splice Commands

  • Splice Null
  • Splice Schedule (lightly tested)
  • Splice Insert
  • Time Signal
  • Bandwidth Reservation (lightly tested)

Splice Descriptors

  • DTMF Descriptor
  • Segmentation Descriptor
  • Segmentation UPID (partially implemented)
  • Segmentation Types and Messages
  • Time Descriptor
  • Audio Descriptor (lightly tested)

Dependencies

  • Python 3
  • bitn

Install

pip install threefive
Collecting threefive
  Downloading threefive-2.0.69-py3-none-any.whl (12 kB)
Collecting bitn>=0.0.21
  Downloading bitn-0.0.21-py3-none-any.whl (3.0 kB)
Installing collected packages: bitn, threefive
Successfully installed bitn-0.0.21 threefive-2.0.69

Using threefive

Call threefive.decode.

  • mpegts files
  • binary files
  • base64 encoded strings
  • hex encoded strings
  • binary byte strings

Parse Mpegts Files

>>> import threefive
>>> threefive.decode('/path/to/mpegwithscte35.ts')

Parse Binary Encoded Messages From a File

>>> import threefive
>>> stuff=threefive.decode('/mnt/build/file.bin')

Parse Base64 Encoded Messages

>>> import threefive
>>> mesg='/DBhAAAAAAAA///wBQb+qM1E7QBLAhdDVUVJSAAArX+fCAgAAAAALLLXnTUCAAIXQ1VFSUg/nwgIAAAAACyy150RAAACF0NVRUlIAAAnf58ICAAAAAAsstezEAAAihiGnw=='
>>> t=threefive.decode(mesg)

Parse Hex Encoded Messages

>>> import threefive
>>> u=threefive.decode('0xFC302F000000000000FFFFF014054800008F7FEFFE7369C02EFE0052CCF500000000000A0008435545490000013562DBA30A')

Parse Binary Byte String Messages

>>> import threefive
>>> scte35=threefive.decode('/path/to/some_file.bin')

Output for Base64 and Hex Strings

  • SCTE 35 Info Section
  • SCTE 35 Command
  • SCTE 35 Descriptors
{ 'SCTE35': { 'Info_Section': { 'crc': '0x9ac9d17e',
                                'cw_index': '0xff',
                                'descriptor_loop_length': 30,
                                'encrypted_packet': False,
                                'encryption_algorithm': 0,
                                'private': False,
                                'protocol_version': 0,
                                'pts_adjustment': 0.0,
                                'reserved': 3,
                                'section_length': 52,
                                'section_syntax_indicator': False,
                                'splice_command_length': 5,
                                'splice_command_type': 6,
                                'table_id': '0xfc',
                                'tier': '0xfff'},
              'Splice_Command': { 'name': 'Time '
                                          'Signal',
                                  'pts_time': 21388.766756,
                                  'time_specified_flag': True},
              'Splice_Descriptors': [ { 'archive_allowed_flag': True,
                                        'delivery_not_restricted_flag': False,
                                        'descriptor_length': 28,
                                        'device_restrictions': '0x3',
                                        'identifier': 'CUEI',
                                        'name': 'Segmentation '
                                                'Descriptor',
                                        'no_regional_blackout_flag': True,
                                        'program_segmentation_flag': True,
                                        'segment_num': 2,
                                        'segmentation_duration': 307.0,
                                        'segmentation_duration_flag': True,
                                        'segmentation_event_cancel_indicator': False,
                                        'segmentation_event_id': '0x4800008e',
                                        'segmentation_message': 'Provider '
                                                                'Placement '
                                                                'Opportunity '
                                                                'Start',
                                        'segmentation_type_id': 52,
                                        'segmentation_upid_length': 8,
                                        'segmentation_upid_type': 8,
                                        'segments_expected': 0,
                                        'splice_descriptor_tag': 2,
                                        'turner_identifier': '0x2ca0a18a',
                                        'web_delivery_allowed_flag': False}]}}

Output for Mpegts streams and Files

  • Packet Pid
  • Packet PTS
  • SCTE 35 Info Section
  • SCTE 35 Command
  • SCTE 35 Descriptors
{ 'Packet': { 'pid': '0x135',
              'pts': 89730.289522},
  'SCTE35': { 'Info_Section': { 'crc': '0x10fa4d9e',
                                'cw_index': '0x0',
                                'descriptor_loop_length': 10,
                                'encrypted_packet': False,
                                'encryption_algorithm': 0,
                                'private': False,
                                'protocol_version': 0,
                                'pts_adjustment': 0.0,
                                'reserved': 3,
                                'section_length': 47,
                                'section_syntax_indicator': False,
                                'splice_command_length': 4095,
                                'splice_command_type': 5,
                                'table_id': '0xfc',
                                'tier': '0xfff'},
              'Splice_Command': { 'avail_expected': 0,
                                  'avail_num': 0,
                                  'break_auto_return': False,
                                  'break_duration': 242.0,
                                  'duration_flag': True,
                                  'name': 'Splice '
                                          'Insert',
                                  'out_of_network_indicator': True,
                                  'program_splice_flag': True,
                                  'pts_time': 89742.161689,
                                  'splice_event_cancel_indicator': False,
                                  'splice_event_id': 662,
                                  'splice_immediate_flag': False,
                                  'time_specified_flag': True,
                                  'unique_program_id': 1},
              'Splice_Descriptors': [ { 'descriptor_length': 8,
                                        'identifier': 'CUEI',
                                        'name': 'Avail '
                                                'Descriptor',
                                        'provider_avail_id': 0,
                                        'splice_descriptor_tag': 0}]}}
{ 'Packet': { 'pid': '0x135',
              'pts': 89977.249522},
  'SCTE35': { 'Info_Section': { 'crc': '0x6e33321e',
                                'cw_index': '0x0',
                                'descriptor_loop_length': 10,
                                'encrypted_packet': False,
                                'encryption_algorithm': 0,
                                'private': False,
                                'protocol_version': 0,
                                'pts_adjustment': 0.0,
                                'reserved': 3,
                                'section_length': 42,
                                'section_syntax_indicator': False,
                                'splice_command_length': 4095,
                                'splice_command_type': 5,
                                'table_id': '0xfc',
                                'tier': '0xfff'},
              'Splice_Command': { 'avail_expected': 0,
                                  'avail_num': 0,
                                  'duration_flag': False,
                                  'name': 'Splice '
                                          'Insert',
                                  'out_of_network_indicator': False,
                                  'program_splice_flag': True,
                                  'pts_time': 89984.161689,
                                  'splice_event_cancel_indicator': False,
                                  'splice_event_id': 662,
                                  'splice_immediate_flag': False,
                                  'time_specified_flag': True,
                                  'unique_program_id': 1},
              'Splice_Descriptors': [ { 'descriptor_length': 8,
                                        'identifier': 'CUEI',
                                        'name': 'Avail '
                                                'Descriptor',
                                        'provider_avail_id': 0,
                                        'splice_descriptor_tag': 0}]}}

threefive.Splice.show()

Shows all data

>>> import threefive                
>>> mesg='/DBIAAAAAAAA///wBQb+ky44CwAyAhdDVUVJSAAACn+fCAgAAAAALKCh4xgAAAIX
Q1VFSUgAAAl/nwgIAAAAACygoYoRAAC0IX6w')
>>> fu=threefive.Splice(mesg)
>>> fu.show()

Read individual values

>>> import threefive
>>> mesg='/DAvAAAAAAAA///wFAVIAACPf+/+c2nALv4AUsz1AAAAAAAKAAhDVUVJAAABNWLbowo='
>>> scte_data=threefive.Splice(mesg)
>>> scte_data.command.name    
'Splice Insert'
>>> scte_data.command.splice_immediate_flag
False
>>> scte_data.command.pts_time
'21514.559089'
>>> scte_data.command.break_duration
'60.293567'

Project details

Verified details

These details have been verified by PyPI
Maintainers
Avatar for fu-corp from gravatar.com fu-corp

Unverified details

These details have not been verified by PyPI
Project links
Meta
  • License: MIT License
  • Author: fu-corp
  • Requires: Python >=3.6
Classifiers

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2.3.77 yanked

Reason this release was yanked:

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2.3.75

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2.1.7

2.1.5

2.1.3

2.1.1

2.0.99

2.0.97

2.0.95

2.0.93

2.0.91

This version

2.0.89

2.0.87

2.0.87b0 pre-release

2.0.85

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2.0.81

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1.1.99

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1.1.89

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