1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
# -*- coding: utf-8 -*-
from __future__ import annotations
from datetime import timedelta
import logging
from .disposition import FFprobeSubtitleDisposition
from .exceptions import UnsupportedCodec
from .tags import FFprobeGenericSubtitleTags
logger = logging.getLogger(__name__)
class FFprobeSubtitleStream:
"""Base class for FFprobe (FFmpeg) extractable subtitle streams."""
def __init__(self, stream: dict):
"""
:raises: LanguageNotFound, UnsupportedCodec
"""
self.index = int(stream["index"])
self.codec_name = stream.get("codec_name", "Unknown")
try:
self._codec = _codecs[self.codec_name]
except KeyError:
raise UnsupportedCodec(f"{self.codec_name} is not supported")
self.r_frame_rate = stream.get("r_frame_rate")
self.avg_frame_rate = stream.get("avg_frame_rate")
self.start_time = timedelta(seconds=float(stream.get("start_time", 0)))
self.start_pts = timedelta(milliseconds=int(stream.get("start_pts", 0)))
self.duration_ts = timedelta(milliseconds=int(stream.get("duration_ts", 0)))
self.duration = timedelta(seconds=float(stream.get("duration", 0)))
self.tags = FFprobeGenericSubtitleTags.detect_cls_from_data(
stream.get("tags", {})
)
self.disposition = FFprobeSubtitleDisposition(stream.get("disposition", {}))
if stream.get("tags") is not None:
self.disposition.update_from_tags(stream["tags"])
def convert_args(self, convert_format, outfile):
"""
convert_format: Union[str, None] = the codec format to convert. if None is set, defaults
to 'convert_default_format' codec's key
outfile: str = output file
raises UnsupportedCodec if convert_format doesn't exist or if the codec doesn't
support conversion
"""
convert_format = convert_format or self._codec["convert_default_format"]
if convert_format is None or not any(
convert_format == item["copy_format"] for item in _codecs.values()
):
raise UnsupportedCodec(f"Unknown convert format: {convert_format}")
if not self._codec["convert"]:
raise UnsupportedCodec(
f"{self.codec_name} codec doesn't support conversion"
)
return ["-map", f"0:{self.index}", "-f", convert_format, outfile]
def copy_args(self, outfile):
"raises UnsupportedCodec if the codec doesn't support copy"
if not self._codec["copy"] or not self._codec["copy_format"]:
raise UnsupportedCodec(f"{self.codec_name} doesn't support copy")
return [
"-map",
f"0:{self.index}",
"-c:s",
"copy",
"-f",
self._codec["copy_format"],
outfile,
]
@property
def language(self):
# Legacy
return self.tags.language
@property
def extension(self):
return self._codec["copy_format"] or self._codec["convert_default_format"] or ""
@property
def convert_default_format(self):
return self._codec["convert_default_format"]
@property
def type(self):
return self._codec["type"]
@property
def suffix(self):
return ".".join(
item
for item in (self.tags.suffix, self.disposition.suffix, self.extension)
if item
)
def __repr__(self) -> str:
return f"<{self.codec_name.upper()}: {self.tags}@{self.disposition}>"
_codecs = {
"ass": {
"type": "text",
"copy": True,
"copy_format": "ass",
"convert": True,
"convert_default_format": "srt",
},
"subrip": {
"type": "text",
"copy": True,
"copy_format": "srt",
"convert": True,
"convert_default_format": "srt",
},
"webvtt": {
"type": "text",
"copy": True,
"copy_format": "webvtt",
"convert": True,
"convert_default_format": "srt",
},
"mov_text": {
"type": "text",
"copy": False,
"copy_format": None,
"convert": True,
"convert_default_format": "srt",
},
"hdmv_pgs_subtitle": {
"type": "bitmap",
"copy": True,
"copy_format": "sup",
"convert": False,
"convert_default_format": None,
},
"dvb_subtitle": {
"type": "bitmap",
"copy": True,
"copy_format": "sup",
"convert": False,
"convert_default_format": None,
},
"dvd_subtitle": {
"type": "bitmap",
"copy": True,
"copy_format": "sup",
"convert": False,
"convert_default_format": None,
},
}
|
