]> Raphaƫl G. Git Repositories - youtubedl/blob - youtube_dl/extractor/justintv.py
Merge tag 'upstream/2014.08.05'
[youtubedl] / youtube_dl / extractor / justintv.py
1 from __future__ import unicode_literals
2
3 import itertools
4 import json
5 import os
6 import re
7
8 from .common import InfoExtractor
9 from ..utils import (
10 compat_str,
11 ExtractorError,
12 formatSeconds,
13 )
14
15
16 class JustinTVIE(InfoExtractor):
17 """Information extractor for justin.tv and twitch.tv"""
18 # TODO: One broadcast may be split into multiple videos. The key
19 # 'broadcast_id' is the same for all parts, and 'broadcast_part'
20 # starts at 1 and increases. Can we treat all parts as one video?
21
22 _VALID_URL = r"""(?x)^(?:http://)?(?:www\.)?(?:twitch|justin)\.tv/
23 (?:
24 (?P<channelid>[^/]+)|
25 (?:(?:[^/]+)/b/(?P<videoid>[^/]+))|
26 (?:(?:[^/]+)/c/(?P<chapterid>[^/]+))
27 )
28 /?(?:\#.*)?$
29 """
30 _JUSTIN_PAGE_LIMIT = 100
31 IE_NAME = 'justin.tv'
32 IE_DESC = 'justin.tv and twitch.tv'
33 _TEST = {
34 'url': 'http://www.twitch.tv/thegamedevhub/b/296128360',
35 'md5': 'ecaa8a790c22a40770901460af191c9a',
36 'info_dict': {
37 'id': '296128360',
38 'ext': 'flv',
39 'upload_date': '20110927',
40 'uploader_id': 25114803,
41 'uploader': 'thegamedevhub',
42 'title': 'Beginner Series - Scripting With Python Pt.1'
43 }
44 }
45
46 # Return count of items, list of *valid* items
47 def _parse_page(self, url, video_id, counter):
48 info_json = self._download_webpage(
49 url, video_id,
50 'Downloading video info JSON on page %d' % counter,
51 'Unable to download video info JSON %d' % counter)
52
53 response = json.loads(info_json)
54 if type(response) != list:
55 error_text = response.get('error', 'unknown error')
56 raise ExtractorError('Justin.tv API: %s' % error_text)
57 info = []
58 for clip in response:
59 video_url = clip['video_file_url']
60 if video_url:
61 video_extension = os.path.splitext(video_url)[1][1:]
62 video_date = re.sub('-', '', clip['start_time'][:10])
63 video_uploader_id = clip.get('user_id', clip.get('channel_id'))
64 video_id = clip['id']
65 video_title = clip.get('title', video_id)
66 info.append({
67 'id': compat_str(video_id),
68 'url': video_url,
69 'title': video_title,
70 'uploader': clip.get('channel_name', video_uploader_id),
71 'uploader_id': video_uploader_id,
72 'upload_date': video_date,
73 'ext': video_extension,
74 })
75 return (len(response), info)
76
77 def _real_extract(self, url):
78 mobj = re.match(self._VALID_URL, url)
79
80 api_base = 'http://api.justin.tv'
81 paged = False
82 if mobj.group('channelid'):
83 paged = True
84 video_id = mobj.group('channelid')
85 api = api_base + '/channel/archives/%s.json' % video_id
86 elif mobj.group('chapterid'):
87 chapter_id = mobj.group('chapterid')
88
89 webpage = self._download_webpage(url, chapter_id)
90 m = re.search(r'PP\.archive_id = "([0-9]+)";', webpage)
91 if not m:
92 raise ExtractorError('Cannot find archive of a chapter')
93 archive_id = m.group(1)
94
95 api = api_base + '/broadcast/by_chapter/%s.xml' % chapter_id
96 doc = self._download_xml(
97 api, chapter_id,
98 note='Downloading chapter information',
99 errnote='Chapter information download failed')
100 for a in doc.findall('.//archive'):
101 if archive_id == a.find('./id').text:
102 break
103 else:
104 raise ExtractorError('Could not find chapter in chapter information')
105
106 video_url = a.find('./video_file_url').text
107 video_ext = video_url.rpartition('.')[2] or 'flv'
108
109 chapter_api_url = 'https://api.twitch.tv/kraken/videos/c' + chapter_id
110 chapter_info = self._download_json(
111 chapter_api_url, 'c' + chapter_id,
112 note='Downloading chapter metadata',
113 errnote='Download of chapter metadata failed')
114
115 bracket_start = int(doc.find('.//bracket_start').text)
116 bracket_end = int(doc.find('.//bracket_end').text)
117
118 # TODO determine start (and probably fix up file)
119 # youtube-dl -v http://www.twitch.tv/firmbelief/c/1757457
120 #video_url += '?start=' + TODO:start_timestamp
121 # bracket_start is 13290, but we want 51670615
122 self._downloader.report_warning('Chapter detected, but we can just download the whole file. '
123 'Chapter starts at %s and ends at %s' % (formatSeconds(bracket_start), formatSeconds(bracket_end)))
124
125 info = {
126 'id': 'c' + chapter_id,
127 'url': video_url,
128 'ext': video_ext,
129 'title': chapter_info['title'],
130 'thumbnail': chapter_info['preview'],
131 'description': chapter_info['description'],
132 'uploader': chapter_info['channel']['display_name'],
133 'uploader_id': chapter_info['channel']['name'],
134 }
135 return info
136 else:
137 video_id = mobj.group('videoid')
138 api = api_base + '/broadcast/by_archive/%s.json' % video_id
139
140 entries = []
141 offset = 0
142 limit = self._JUSTIN_PAGE_LIMIT
143 for counter in itertools.count(1):
144 page_url = api + ('?offset=%d&limit=%d' % (offset, limit))
145 page_count, page_info = self._parse_page(
146 page_url, video_id, counter)
147 entries.extend(page_info)
148 if not paged or page_count != limit:
149 break
150 offset += limit
151 return {
152 '_type': 'playlist',
153 'id': video_id,
154 'entries': entries,
155 }