Comments (6)
futzu
commented on June 18, 2024
I'm using threefive in a tool that monitors a live HLS stream.
Check out showcues, for monitoriing live hls, you'll dig it.
It's valid hexidecimal, just not valid for byte conversion. there's an extra zero, not sure if it's my fault or your fault yet.
>>>> bytes.fromhex('133f10134b04f065e06022')
b'\x13?\x10\x13K\x04\xf0e\xe0`"'- Format identifier
- I can update threefive to do the ascii conversion, is that what you want?
int.to_bytes(1094993490,4,byteorder="big")
b'ADFR'- The SCTE-35 Specification
- threefive code
def _decode_mpu(self):
mpu_data = {
"format_identifier": self.bitbin.as_int(32),
"private_data": self.bitbin.as_hex(self.bit_length - 32),
}
return mpu_data`The stream follows the "Addressable TV" spec'
This is SCTE-35, I cannot commit to multiple specifications,.
None of this is SCTE-35,, but I made you a special threefive cli tool that does this , see below.
• Byte version number: by default 1 = 0x01
• Bytes 6 to 7: TV channel ID - CNI: example for TF1 = 0x33F1
• Bytes 8 to 11 (4 bytes): YYYYMMDD = 0x01341403 (20190211 in decimal)
• Bytes 12 and 13: Ad break code: example = 0x0462 (break 1122)
• Bytes 14 to 16: duration of the break in ms = 0x01C070 (duration: 114800 ms, meaning: 1minute,
54secondes and 20 frames).from threefive.
futzu
commented on June 18, 2024
-
gunzip threefiveadfr.gz
-
install threefiveadfr ~/.local/bin
-
threefiveadfr '0xFC305E00014ECF5F9800FFF00506FE156DE4F0004802144355454900065E087FFF00001B77400000300710021F4355454900065EFF7FBF0C10414446520133F10134B04F065E060220020000020F4355454900065E077FBF00003106106F4BCB35'
- output
{
"info_section": {
"table_id": "0xfc",
"section_syntax_indicator": false,
"private": false,
"sap_type": "0x3",
"sap_details": "No Sap Type",
"section_length": 94,
"protocol_version": 0,
"encrypted_packet": false,
"encryption_algorithm": 0,
"pts_adjustment_ticks": 5617180568,
"pts_adjustment": 62413.117422,
"cw_index": "0x0",
"tier": "0xfff",
"splice_command_length": 5,
"splice_command_type": 6,
"descriptor_loop_length": 72,
"crc": "0x6f4bcb35"
},
"command": {
"command_length": 5,
"command_type": 6,
"name": "Time Signal",
"time_specified_flag": true,
"pts_time": 3994.706311,
"pts_time_ticks": 359523568
},
"descriptors": [
{
"tag": 2,
"descriptor_length": 20,
"name": "Segmentation Descriptor",
"identifier": "CUEI",
"components": [],
"segmentation_event_id": "0x65e08",
"segmentation_event_cancel_indicator": false,
"segmentation_event_id_compliance_indicator": true,
"program_segmentation_flag": true,
"segmentation_duration_flag": true,
"delivery_not_restricted_flag": true,
"segmentation_duration": 20.0,
"segmentation_duration_ticks": 1800000,
"segmentation_message": "Provider Advertisement Start",
"segmentation_upid_type": 0,
"segmentation_upid_type_name": "No UPID",
"segmentation_upid_length": 0,
"segmentation_type_id": 48,
"segment_num": 7,
"segments_expected": 16,
"sub_segment_num": 2,
"sub_segments_expected": 31
},
{
"tag": 2,
"descriptor_length": 31,
"name": "Segmentation Descriptor",
"identifier": "CUEI",
"components": [],
"segmentation_event_id": "0x65eff",
"segmentation_event_cancel_indicator": false,
"segmentation_event_id_compliance_indicator": true,
"program_segmentation_flag": true,
"segmentation_duration_flag": false,
"delivery_not_restricted_flag": true,
"segmentation_upid_type": 12,
"segmentation_upid_type_name": "MPU",
"segmentation_upid_length": 16,
"segmentation_upid": {
"format_identifier": "ADFR",
"version": 1, <-- Boom goes the dynamite
"ChannelID": 13297,
"YYYMMDD": "0x134b04f",
"Ad Code": "0x65e",
"Duration": 393760
},
"segmentation_type_id": 2
},
{
"tag": 2,
"descriptor_length": 15,
"name": "Segmentation Descriptor",
"identifier": "CUEI",
"components": [],
"segmentation_event_id": "0x65e07",
"segmentation_event_cancel_indicator": false,
"segmentation_event_id_compliance_indicator": true,
"program_segmentation_flag": true,
"segmentation_duration_flag": false,
"delivery_not_restricted_flag": true,
"segmentation_message": "Provider Advertisement End",
"segmentation_upid_type": 0,
"segmentation_upid_type_name": "No UPID",
"segmentation_upid_length": 0,
"segmentation_type_id": 49,
"segment_num": 6,
"segments_expected": 16
}
]
}from threefive.
futzu
commented on June 18, 2024
- threefiveadfr
import sys
import threefive
def adfr_mpu(self):
mpu_data = {
"format_identifier": self.bitbin.as_charset(32),
"version": self.bitbin.as_int(8),
"ChannelID": self.bitbin.as_int(16),
"YYYMMDD": self.bitbin.as_hex(32),
"Ad Code": self.bitbin.as_hex(16),
"Duration": self.bitbin.as_int(24),
}
return mpu_data
if __name__ == "__main__":
threefive.upids.UpidDecoder._decode_mpu = adfr_mpu
if sys.argv and sys.argv[1].lower() in [b'version','version']:
print(f'{threefive.version}')
sys.exit()
if len(sys.argv) > 1:
if sys.argv[1].lower() in [b'pts','pts']:
strm = threefive.Stream(sys.argv[2])
strm.show_pts()
sys.exit()
if sys.argv[1].lower() in [b'show','show']:
strm = threefive.Stream(sys.argv[2])
strm.show()
sys.exit()
for arg in sys.argv[1:]:
threefive.decode(arg)
else:
threefive.decode(sys.stdin.buffer)from threefive.
futzu
commented on June 18, 2024
Update: we're both stupid .
It's just needs a leading zero.
hex should always be an even number, if we want to convert to bytes.
bytes.fromhex("0133f10134b04f065e060220")
b'\x013\xf1\x014\xb0O\x06^\x06\x02 '
>>>> len("133f10134b04f065e060220")
23
>>>> len("0133f10134b04f065e060220")
24
>>>> bytes.fromhex("01" )
b'\x01'
>>>> bytes.fromhex( "33f1")
b'3\xf1'
>>>> bytes.fromhex("0134b04f")
b'\x014\xb0O'
>>>> bytes.fromhex("065e")
b'\x06^'
>>>> bytes.fromhex("060220")
b'\x06\x02 '
from threefive.
futzu
commented on June 18, 2024
I built it into 2.4.25, you don't need threefiveadfr
I left private_data in there, you need set that if you are encoding, it will ignore version and such.
def _decode_mpu(self):
mpu_data = {
"format_identifier": self.bitbin.as_charset(32),
"private_data": self.bitbin.as_hex(self.bit_length - 32),
}
if mpu_data["format_identifier"] =="ADFR":
data = bytes.fromhex(mpu_data["private_data"][2:])
mpu_data["version"] = data[0]
mpu_data["channel_identifier"]= hex(int.from_bytes(data[1:3],byteorder="big"))
mpu_data["date"] = int.from_bytes(data[3:7],byteorder="big")
mpu_data["break_code"]= int.from_bytes(data[7:9],byteorder="big")
mpu_data["duration"] =hex(int.from_bytes(data[9:11], byteorder="big"))
return mpu_dataaddressable TV compatibility
"tag": 2,
"descriptor_length": 31,
"name": "Segmentation Descriptor",
"identifier": "CUEI",
"components": [],
"segmentation_event_id": "0x065eff",
"segmentation_event_cancel_indicator": false,
"segmentation_event_id_compliance_indicator": true,
"program_segmentation_flag": true,
"segmentation_duration_flag": false,
"delivery_not_restricted_flag": true,
"segmentation_message": "Call Ad Server", < --- Boom
"segmentation_upid_type": 12,
"segmentation_upid_type_name": "MPU",
"segmentation_upid_length": 16,
"segmentation_upid": {
"format_identifier": "ADFR", <--- Boom
"private_data": "0x0133f10134b04f065e060220",
"version": 1, <---- Boom
"channel_identifier": "0x33f1", <---- Boom
"date": 20230223, <---- Boom
"break_code": 1630, <---- Boom
"duration": "0x602" <---- Boom
},
"segmentation_type_id": 2, <---- Boom
"segment_num": 0,
"segments_expected": 0
},from threefive.
wabiloo
commented on June 18, 2024
Awesome, thanks!
from threefive.
Related Issues (20)
- OSError: [Errno 55] No buffer space available HOT 8
- Issues with example scripts HOT 6
- 2 quick points HOT 6
- cue decode fails with UniCodeDecode error, unhandled exception HOT 2
- Decode / encode round trip produces unexpected results HOT 5
- Tried editing a splice insert from example but getting different result HOT 3
- 2nd argument is missing HOT 2
- Having latest.py file breaks rpm build HOT 7
- IndexError thrown in _decode_components() threefive/commands.py:217 HOT 6
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- Hey I'd love to talk about scte35 support! HOT 1
- The SCTE35 "section_length" value is always 3 bytes less than the actual size HOT 2
- cmd.py in latest PyPI release is not syntaxically correct HOT 6
- Can't parse valid SCTE-35 HOT 11
- decode local ts file fails... HOT 3
- encoding a signal with auto_return = true HOT 2
- Does anyone speak DASH?
- Crash when decoding private descriptors from PrivateCommand HOT 19
- Are you for hire in scte35 related jobs? HOT 3
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from threefive.