threefive 1.1.97

SCTE 35 Super Decoder

threefive

SCTE35 Decoder

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

2019 Specification

• https://www.scte.org/SCTEDocs/Standards/ANSI_SCTE%2035%202019r1.pdf

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

Install

pip install threefive

Collecting threefive
  Downloading https://files.pythonhosted.org/packages/c7/dd/fcef1a0529659be65dd5bee641fc715db0d559531faf4b4ddd59b239d60a/threefive-1.1.59-py3-none-any.whl
Requirement already satisfied: bitstring in /usr/lib/python3.7/site-packages (from threefive) (3.1.6)
Installing collected packages: threefive
Successfully installed threefive-1.1.59

Run

The Easy Way.

Call threefive.decode.

• mpegts files,
• binary files,
• base64 encoded strings,
• binary encoded strings,
• hex encoded strings.

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


[  SCTE 35 Stream found with Pid 0x135  ]


[SCTE 35 Message]

 Splice Info Section:
	{'table_id': '0xfc', 'section_syntax_indicator': False, 'private': False, 'section_length': 47, 'protocol_version': 0, 'encrypted_packet': False, 'encryption_algorithm': 0, 'pts_adjustment': '0.000000', 'cw_index': '0x0', 'tier': '0xfff', 'splice_command_length': 4095, 'splice_command_type': 5, 'descriptor_loop_length': 10, 'crc': '0x10fa4d9e'}

 Splice Command:
	{'splice_type': 5, 'name': 'Splice Insert', 'splice_event_id': 662, 'splice_event_cancel_indicator': False, 'out_of_network_indicator': True, 'program_splice_flag': True, 'duration_flag': True, 'splice_immediate_flag': False, 'time_specified_flag': True, 'pts_time': '89742.161689', 'break_auto_return': False, 'break_duration': '242.000000', 'unique_program_id': 1, 'avail_num': 0, 'avail_expected': 0}

 Splice Descriptor 0:
	{'name': 'Avail Descriptor', 'splice_descriptor_tag': 0, 'descriptor_length': 8, 'identifier': 'CUEI', 'provider_avail_id': 0}


[SCTE 35 Message]

 Splice Info Section:
	{'table_id': '0xfc', 'section_syntax_indicator': False, 'private': False, 'section_length': 42, 'protocol_version': 0, 'encrypted_packet': False, 'encryption_algorithm': 0, 'pts_adjustment': '0.000000', 'cw_index': '0x0', 'tier': '0xfff', 'splice_command_length': 4095, 'splice_command_type': 5, 'descriptor_loop_length': 10, 'crc': '0x6e33321e'}

 Splice Command:
	{'splice_type': 5, 'name': 'Splice Insert', 'splice_event_id': 662, 'splice_event_cancel_indicator': False, 'out_of_network_indicator': False, 'program_splice_flag': True, 'duration_flag': False, 'splice_immediate_flag': False, 'time_specified_flag': True, 'pts_time': '89984.161689', 'unique_program_id': 1, 'avail_num': 0, 'avail_expected': 0}

 Splice Descriptor 0:
	{'name': 'Avail Descriptor', 'splice_descriptor_tag': 0, 'descriptor_length': 8, 'identifier': 'CUEI', 'provider_avail_id': 0}

threefive.decode works the same for files and encoded strings.

>>> import threefive
>>> Bee64='/DAvAAAAAAAA///wBQb+dGKQoAAZAhdDVUVJSAAAjn+fCAgAAAAALKChijUCAKnMZ1g='
>>> threefive.decode(Bee64)


[SCTE 35 Message]

 Splice Info Section:
	{'table_id': '0xfc', 'section_syntax_indicator': False, 'private': False, 'section_length': 47, 'protocol_version': 0, 'encrypted_packet': False, 'encryption_algorithm': 0, 'pts_adjustment': '0.000000', 'cw_index': '0xff', 'tier': '0xfff', 'splice_command_length': 5, 'splice_command_type': 6, 'descriptor_loop_length': 25, 'crc': '0xa9cc6758'}

 Splice Command:
	{'splice_type': 6, 'name': 'Time Signal', 'time_specified_flag': True, 'pts_time': '21695.740089'}

 Splice Descriptor 0:
	{'name': 'Segmentation Descriptor', 'splice_descriptor_tag': 2, 'descriptor_length': 23, 'identifier': 'CUEI', 'segmentation_event_id': '0x4800008e', 'segmentation_event_cancel_indicator': False, 'program_segmentation_flag': True, 'segmentation_duration_flag': False, 'delivery_not_restricted_flag': False, 'web_delivery_allowed_flag': True, 'no_regional_blackout_flag': True, 'archive_allowed_flag': True, 'device_restrictions': '0x3', 'segmentation_upid_type': 8, 'segmentation_upid_length': 8, 'turner_identifier': '0x000000002ca0a18a', 'segmentation_type_id': 53, 'segmentation_message': 'Provider Placement Opportunity End', 'segment_num': 2, 'segments_expected': 0}
<threefive.splice.Splice object at 0x7f44c1f530d0>

Parse mpegts file

• Handled by the Stream class (in threefive/stream.py )

# Parse the file '/home/a/mpegwithscte35.ts' for SCTE 35 messages
# show_null=False hides splice null messages


>>> import threefive

>>> scte35_stream=threefive.Stream('/home/a/mpegwithscte35.ts',show_null=False)

[ Splice Info Section ]
table_id : 0xfc
section_syntax_indicator : False
private : False
section_length : 47
protocol_version : 0
encrypted_packet : False
encryption_algorithm : 0
pts_adjustment : 0.000000
cw_index : 0x0
tier : 0xfff
splice_command_length : 4095
splice_command_type : 5
descriptor_loop_length : 10
crc : 0x10fa4d9e

[ Splice Command ]
splice_type : 5
name : Splice Insert
splice_event_id : 662
splice_event_cancel_indicator : False
out_of_network_indicator : True
program_splice_flag : True
duration_flag : True
splice_immediate_flag : False
time_specified_flag : True
pts_time : 89742.161689
break_auto_return : False
break_duration : 242.000000
unique_program_id : 1
avail_num : 0
avail_expected : 0

[ Splice Descriptor  0  ]
name : Avail Descriptor
splice_descriptor_tag : 0
descriptor_length : 8
identifier : CUEI
provider_avail_id : 0

[ Splice Info Section ]
table_id : 0xfc
section_syntax_indicator : False
private : False
section_length : 42
protocol_version : 0
encrypted_packet : False
encryption_algorithm : 0
pts_adjustment : 0.000000
cw_index : 0x0
tier : 0xfff
splice_command_length : 4095
splice_command_type : 5
descriptor_loop_length : 10
crc : 0x6e33321e

[ Splice Command ]
splice_type : 5
name : Splice Insert
splice_event_id : 662
splice_event_cancel_indicator : False
out_of_network_indicator : False
program_splice_flag : True
duration_flag : False
splice_immediate_flag : False
time_specified_flag : True
pts_time : 89984.161689
unique_program_id : 1
avail_num : 0
avail_expected : 0

[ Splice Descriptor  0  ]
name : Avail Descriptor
splice_descriptor_tag : 0
descriptor_length : 8
identifier : CUEI
provider_avail_id : 0

Parse binary encoded messages from a file

• Handled by the Stream class (in threefive/stream.py )

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

[ Splice Info Section ]
table_id : 0xfc
section_syntax_indicator : False
private : False
section_length : 78
protocol_version : 0
encrypted_packet : False
encryption_algorithm : 0
pts_adjustment : 0.000000
cw_index : 0x0
tier : 0xfff
splice_command_length : 5
splice_command_type : 6
descriptor_loop_length : 60
crc : 0x54590000

[ Splice Command ]
splice_type : 6
name : Time Signal
time_specified_flag : True
pts_time : 0.555556

[ Splice Descriptor  0  ]
name : Segmentation Descriptor
splice_descriptor_tag : 2
descriptor_length : 58
identifier : CUEI
segmentation_event_id : 0x3
segmentation_event_cancel_indicator : False
program_segmentation_flag : True
segmentation_duration_flag : True
delivery_not_restricted_flag : True
segmentation_duration : 0.000178
segmentation_upid_type : 12
segmentation_type_id : 38
segmentation_message : Closing Credit Start

Parse base64 encoded messages

• Handled by the Splice class (in threefive/splice.py )

>>> import threefive
>>> mesg='/DBhAAAAAAAA///wBQb+qM1E7QBLAhdDVUVJSAAArX+fCAgAAAAALLLXnTUCAAIXQ1VFSUg/nwgIAAAAACyy150RAAACF0NVRUlIAAAnf58ICAAAAAAsstezEAAAihiGnw=='
>>> splice=threefive.Splice(mesg)
>>> splice.show_command()

[ Splice Command ]
splice_type : 6
name : Time Signal
time_specified_flag : True
pts_time : 31466.942367

Parse hex encoded messages

• Handled by the Splice class (in threefive/splice.py )

>>> import threefive
>>> mesg= '0xfc3061000000000000fffff00506fea8cd44ed004b021743554549480000ad7f9
f0808000000002cb2d79d350200021743554549480000267f9f0808000000002cb2d79d110000021
743554549480000277f9f0808000000002cb2d7b31000008a18869f'

>>> h_splice=threefive.Splice(mesg)
>>> h_splice.show_info_section() 

[ Splice Info Section ]
table_id : 0xfc
section_syntax_indicator : False
private : False
section_length : 97
protocol_version : 0
encrypted_packet : False
encryption_algorithm : 0
pts_adjustment : 0.000000
cw_index : 0xff
tier : 0xfff
splice_command_length : 5
splice_command_type : 6
descriptor_loop_length : 75
crc : 0x8a18869f

Splice Methods

threefive.Splice.show_info_section()

>>> import threefive
>>> mesg='/DBhAAAAAAAA///wBQb+qM1E7QBLAhdDVUVJSAAArX+fCAgAAAAALLLXnTUCAAIXQ1VFSUgAACZ/nwgIAAAAACyy150RAAACF0NVRUlIAAAnf58ICAAAAAAsstezEAAAihiGnw=='
>>> splice=threefive.Splice(mesg)
>>> splice.show_info_section()

[ Splice Info Section ]
table_id : 0xfc
section_syntax_indicator : False
private : False
reserved : 3
section_length : 97
protocol_version : 0
encrypted_packet : False
encryption_algorithm : 0
pts_adjustment : 0
cw_index : 0xff
tier : 0xfff
splice_command_length : 5
splice_command_type : 6
descriptor_loop_length : 75

threefive.Splice.show_command()

>>> import threefive
>>> mesg='/DBhAAAAAAAA///wBQb+qM1E7QBLAhdDVUVJSAAArX+fCAgAAAAALLLXnTUCAAIXQ1VFSUgAACZ/nwgIAAAAACyy150RAAACF0NVRUlIAAAnf58ICAAAAAAsstezEAAAihiGnw=='
>>> splice=threefive.Splice(mesg)
>>> splice.show_command()

[ Splice Command ]
splice_type : 6
name : Time Signal
time_specified_flag : True
pts_time : 31466.942367

threefive.Splice.show_descriptors()

>> import threefive
>>> mesg='/DBhAAAAAAAA///wBQb+qM1E7QBLAhdDVUVJSAAArX+fCAgAAAAALLLXnTUCAAIXQ1VFSUgAACZ/nwgIAAAAACyy150RAAACF0NVRUlIAAAnf58ICAAAAAAsstezEAAAihiGnw=='
>>> stuff=threefive.Splice(mesg)
>>> stuff.show_descriptors()

[ Splice Descriptor  0  ]
name : Segmentation Descriptor
splice_descriptor_tag : 2
descriptor_length : 23
identifier : CUEI
segmentation_event_id : 0x480000ad
segmentation_event_cancel_indicator : False
program_segmentation_flag : True
segmentation_duration_flag : False
delivery_not_restricted_flag : False
web_delivery_allowed_flag : True
no_regional_blackout_flag : True
archive_allowed_flag : True
device_restrictions : 0x3
segmentation_upid_type : 8
segmentation_upid_length : 8
turner_identifier : 0x000000002cb2d79d
segmentation_type_id : 53
segmentation_type : Provider Placement Opportunity End
segment_num : 2
segments_expected : 0

[ Splice Descriptor  1  ]
name : Segmentation Descriptor
splice_descriptor_tag : 2
descriptor_length : 23
identifier : CUEI
segmentation_event_id : 0x48000026
segmentation_event_cancel_indicator : False
program_segmentation_flag : True
segmentation_duration_flag : False
delivery_not_restricted_flag : False
web_delivery_allowed_flag : True
no_regional_blackout_flag : True
archive_allowed_flag : True
device_restrictions : 0x3
segmentation_upid_type : 8
segmentation_upid_length : 8
turner_identifier : 0x000000002cb2d79d
segmentation_type_id : 17
segmentation_type : Program End
segment_num : 0
segments_expected : 0

[ Splice Descriptor  2  ]
name : Segmentation Descriptor
splice_descriptor_tag : 2
descriptor_length : 23
identifier : CUEI
segmentation_event_id : 0x48000027
segmentation_event_cancel_indicator : False
program_segmentation_flag : True
segmentation_duration_flag : False
delivery_not_restricted_flag : False
web_delivery_allowed_flag : True
no_regional_blackout_flag : True
archive_allowed_flag : True
device_restrictions : 0x3
segmentation_upid_type : 8
segmentation_upid_length : 8
turner_identifier : 0x000000002cb2d7b3
segmentation_type_id : 16
segmentation_type : Program Start
segment_num : 0
segments_expected : 0

threefive.Splice.show()

Shows all data

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


[ Splice Info Section ]
table_id : 0xfc
section_syntax_indicator : False
private : False
section_length : 97
protocol_version : 0
encrypted_packet : False
encryption_algorithm : 0
pts_adjustment : 0.000000
cw_index : 0xff
tier : 0xfff
splice_command_length : 5
splice_command_type : 6
descriptor_loop_length : 75
crc : 0x8a18869f

[ Splice Command ]
splice_type : 6
name : Time Signal
time_specified_flag : True
pts_time : 31466.942367

[ Splice Descriptor  0  ]
name : Segmentation Descriptor
splice_descriptor_tag : 2
descriptor_length : 23
identifier : CUEI
segmentation_event_id : 0x480000ad
segmentation_event_cancel_indicator : False
program_segmentation_flag : True
segmentation_duration_flag : False
delivery_not_restricted_flag : False
web_delivery_allowed_flag : True
no_regional_blackout_flag : True
archive_allowed_flag : True
device_restrictions : 0x3
segmentation_upid_type : 8
segmentation_upid_length : 8
turner_identifier : 0x000000002cb2d79d
segmentation_type_id : 53
segmentation_type : Provider Placement Opportunity End
segment_num : 2
segments_expected : 0

[ Splice Descriptor  1  ]
name : Segmentation Descriptor
splice_descriptor_tag : 2
descriptor_length : 23
identifier : CUEI
segmentation_event_id : 0x48000026
segmentation_event_cancel_indicator : False
program_segmentation_flag : True
segmentation_duration_flag : False
delivery_not_restricted_flag : False
web_delivery_allowed_flag : True
no_regional_blackout_flag : True
archive_allowed_flag : True
device_restrictions : 0x3
segmentation_upid_type : 8
segmentation_upid_length : 8
turner_identifier : 0x000000002cb2d79d
segmentation_type_id : 17
segmentation_type : Program End
segment_num : 0
segments_expected : 0

[ Splice Descriptor  2  ]
name : Segmentation Descriptor
splice_descriptor_tag : 2
descriptor_length : 23
identifier : CUEI
segmentation_event_id : 0x48000027
segmentation_event_cancel_indicator : False
program_segmentation_flag : True
segmentation_duration_flag : False
delivery_not_restricted_flag : False
web_delivery_allowed_flag : True
no_regional_blackout_flag : True
archive_allowed_flag : True
device_restrictions : 0x3
segmentation_upid_type : 8
segmentation_upid_length : 8
turner_identifier : 0x000000002cb2d7b3
segmentation_type_id : 16
segmentation_type : Program Start
segment_num : 0
segments_expected : 0

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'