diff options
Diffstat (limited to 'youtube_dl/extractor/twitch.py')
| -rw-r--r-- | youtube_dl/extractor/twitch.py | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/youtube_dl/extractor/twitch.py b/youtube_dl/extractor/twitch.py new file mode 100644 index 000000000..42d38b224 --- /dev/null +++ b/youtube_dl/extractor/twitch.py @@ -0,0 +1,176 @@ +from __future__ import unicode_literals + +import itertools +import re + +from .common import InfoExtractor +from ..utils import ( + ExtractorError, + parse_iso8601, +) + + +class TwitchIE(InfoExtractor): + # 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\.tv/ + (?: + (?P<channelid>[^/]+)| + (?:(?:[^/]+)/b/(?P<videoid>[^/]+))| + (?:(?:[^/]+)/c/(?P<chapterid>[^/]+)) + ) + /?(?:\#.*)?$ + """ + _PAGE_LIMIT = 100 + _API_BASE = 'https://api.twitch.tv' + _TEST = { + 'url': 'http://www.twitch.tv/thegamedevhub/b/296128360', + 'md5': 'ecaa8a790c22a40770901460af191c9a', + 'info_dict': { + 'id': '296128360', + 'ext': 'flv', + 'upload_date': '20110927', + 'uploader_id': 25114803, + 'uploader': 'thegamedevhub', + 'title': 'Beginner Series - Scripting With Python Pt.1' + } + } + + def _handle_error(self, response): + if not isinstance(response, dict): + return + error = response.get('error') + if error: + raise ExtractorError( + '%s returned error: %s - %s' % (self.IE_NAME, error, response.get('message')), + expected=True) + + def _download_json(self, url, video_id, note='Downloading JSON metadata'): + response = super(TwitchIE, self)._download_json(url, video_id, note) + self._handle_error(response) + return response + + def _extract_media(self, item, item_id): + ITEMS = { + 'a': 'video', + 'c': 'chapter', + } + info = self._extract_info(self._download_json( + '%s/kraken/videos/%s%s' % (self._API_BASE, item, item_id), item_id, + 'Downloading %s info JSON' % ITEMS[item])) + response = self._download_json( + '%s/api/videos/%s%s' % (self._API_BASE, item, item_id), item_id, + 'Downloading %s playlist JSON' % ITEMS[item]) + entries = [] + chunks = response['chunks'] + qualities = list(chunks.keys()) + for num, fragment in enumerate(zip(*chunks.values()), start=1): + formats = [] + for fmt_num, fragment_fmt in enumerate(fragment): + format_id = qualities[fmt_num] + fmt = { + 'url': fragment_fmt['url'], + 'format_id': format_id, + 'quality': 1 if format_id == 'live' else 0, + } + m = re.search(r'^(?P<height>\d+)[Pp]', format_id) + if m: + fmt['height'] = int(m.group('height')) + formats.append(fmt) + self._sort_formats(formats) + entry = dict(info) + entry['title'] = '%s part %d' % (entry['title'], num) + entry['formats'] = formats + entries.append(entry) + return entries + + def _extract_info(self, info): + return { + 'id': info['_id'], + 'title': info['title'], + 'description': info['description'], + 'duration': info['length'], + 'thumbnail': info['preview'], + 'uploader': info['channel']['display_name'], + 'uploader_id': info['channel']['name'], + 'timestamp': parse_iso8601(info['recorded_at']), + 'view_count': info['views'], + } + + def _real_extract(self, url): + mobj = re.match(self._VALID_URL, url) + if mobj.group('chapterid'): + return self._extract_media('c', 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('Cannot find archive of a chapter') + archive_id = m.group(1) + + api = api_base + '/broadcast/by_chapter/%s.xml' % chapter_id + doc = self._download_xml( + api, chapter_id, + note='Downloading chapter information', + errnote='Chapter information download failed') + for a in doc.findall('.//archive'): + if archive_id == a.find('./id').text: + break + else: + raise ExtractorError('Could not find chapter in chapter information') + + video_url = a.find('./video_file_url').text + video_ext = video_url.rpartition('.')[2] or 'flv' + + chapter_api_url = 'https://api.twitch.tv/kraken/videos/c' + chapter_id + chapter_info = self._download_json( + chapter_api_url, 'c' + chapter_id, + note='Downloading chapter metadata', + errnote='Download of chapter metadata failed') + + 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 += '?start=' + TODO:start_timestamp + # bracket_start is 13290, but we want 51670615 + self._downloader.report_warning('Chapter detected, but we can just download the whole file. ' + 'Chapter starts at %s and ends at %s' % (formatSeconds(bracket_start), formatSeconds(bracket_end))) + + info = { + 'id': '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 + """ + elif mobj.group('videoid'): + return self._extract_media('a', mobj.group('videoid')) + elif mobj.group('channelid'): + channel_id = mobj.group('channelid') + info = self._download_json( + '%s/kraken/channels/%s' % (self._API_BASE, channel_id), + channel_id, 'Downloading channel info JSON') + channel_name = info.get('display_name') or info.get('name') + entries = [] + offset = 0 + limit = self._PAGE_LIMIT + for counter in itertools.count(1): + response = self._download_json( + '%s/kraken/channels/%s/videos/?offset=%d&limit=%d' + % (self._API_BASE, channel_id, offset, limit), + channel_id, 'Downloading channel videos JSON page %d' % counter) + videos = response['videos'] + if not videos: + break + entries.extend([self.url_result(video['url'], 'Twitch') for video in videos]) + offset += limit + return self.playlist_result(entries, channel_id, channel_name) |