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
|
import json
import os
import re
import xml.etree.ElementTree
from .common import InfoExtractor
from ..utils import (
ExtractorError,
formatSeconds,
)
class JustinTVIE(InfoExtractor):
"""Information extractor for justin.tv and twitch.tv"""
# TODO: One broadcast may be split into multiple videos. The key
# 'broadcast_id' is the same for all parts, and 'broadcast_part'
# starts at 1 and increases. Can we treat all parts as one video?
_VALID_URL = r"""(?x)^(?:http://)?(?:www\.)?(?:twitch|justin)\.tv/
(?:
(?P<channelid>[^/]+)|
(?:(?:[^/]+)/b/(?P<videoid>[^/]+))|
(?:(?:[^/]+)/c/(?P<chapterid>[^/]+))
)
/?(?:\#.*)?$
"""
_JUSTIN_PAGE_LIMIT = 100
IE_NAME = u'justin.tv'
def report_download_page(self, channel, offset):
"""Report attempt to download a single page of videos."""
self.to_screen(u'%s: Downloading video information from %d to %d' %
(channel, offset, offset + self._JUSTIN_PAGE_LIMIT))
# Return count of items, list of *valid* items
def _parse_page(self, url, video_id):
info_json = self._download_webpage(url, video_id,
u'Downloading video info JSON',
u'unable to download video info JSON')
response = json.loads(info_json)
if type(response) != list:
error_text = response.get('error', 'unknown error')
raise ExtractorError(u'Justin.tv API: %s' % error_text)
info = []
for clip in response:
video_url = clip['video_file_url']
if video_url:
video_extension = os.path.splitext(video_url)[1][1:]
video_date = re.sub('-', '', clip['start_time'][:10])
video_uploader_id = clip.get('user_id', clip.get('channel_id'))
video_id = clip['id']
video_title = clip.get('title', video_id)
info.append({
'id': video_id,
'url': video_url,
'title': video_title,
'uploader': clip.get('channel_name', video_uploader_id),
'uploader_id': video_uploader_id,
'upload_date': video_date,
'ext': video_extension,
})
return (len(response), info)
def _real_extract(self, url):
mobj = re.match(self._VALID_URL, url)
if mobj is None:
raise ExtractorError(u'invalid URL: %s' % url)
api_base = 'http://api.justin.tv'
paged = False
if mobj.group('channelid'):
paged = True
video_id = mobj.group('channelid')
api = api_base + '/channel/archives/%s.json' % video_id
elif mobj.group('chapterid'):
chapter_id = mobj.group('chapterid')
webpage = self._download_webpage(url, chapter_id)
m = re.search(r'PP\.archive_id = "([0-9]+)";', webpage)
if not m:
raise ExtractorError(u'Cannot find archive of a chapter')
archive_id = m.group(1)
api = api_base + '/broadcast/by_chapter/%s.xml' % chapter_id
chapter_info_xml = self._download_webpage(api, chapter_id,
note=u'Downloading chapter information',
errnote=u'Chapter information download failed')
doc = xml.etree.ElementTree.fromstring(chapter_info_xml)
for a in doc.findall('.//archive'):
if archive_id == a.find('./id').text:
break
else:
raise ExtractorError(u'Could not find chapter in chapter information')
video_url = a.find('./video_file_url').text
video_ext = video_url.rpartition('.')[2] or u'flv'
chapter_api_url = u'https://api.twitch.tv/kraken/videos/c' + chapter_id
chapter_info_json = self._download_webpage(chapter_api_url, u'c' + chapter_id,
note='Downloading chapter metadata',
errnote='Download of chapter metadata failed')
chapter_info = json.loads(chapter_info_json)
bracket_start = int(doc.find('.//bracket_start').text)
bracket_end = int(doc.find('.//bracket_end').text)
# TODO determine start (and probably fix up file)
# youtube-dl -v http://www.twitch.tv/firmbelief/c/1757457
#video_url += u'?start=' + TODO:start_timestamp
# bracket_start is 13290, but we want 51670615
self._downloader.report_warning(u'Chapter detected, but we can just download the whole file. '
u'Chapter starts at %s and ends at %s' % (formatSeconds(bracket_start), formatSeconds(bracket_end)))
info = {
'id': u'c' + chapter_id,
'url': video_url,
'ext': video_ext,
'title': chapter_info['title'],
'thumbnail': chapter_info['preview'],
'description': chapter_info['description'],
'uploader': chapter_info['channel']['display_name'],
'uploader_id': chapter_info['channel']['name'],
}
return [info]
else:
video_id = mobj.group('videoid')
api = api_base + '/broadcast/by_archive/%s.json' % video_id
self.report_extraction(video_id)
info = []
offset = 0
limit = self._JUSTIN_PAGE_LIMIT
while True:
if paged:
self.report_download_page(video_id, offset)
page_url = api + ('?offset=%d&limit=%d' % (offset, limit))
page_count, page_info = self._parse_page(page_url, video_id)
info.extend(page_info)
if not paged or page_count != limit:
break
offset += limit
return info
|
