diff options
Diffstat (limited to 'youtube_dl/extractor/justintv.py')
| -rw-r--r-- | youtube_dl/extractor/justintv.py | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/youtube_dl/extractor/justintv.py b/youtube_dl/extractor/justintv.py new file mode 100644 index 000000000..9c46baed5 --- /dev/null +++ b/youtube_dl/extractor/justintv.py @@ -0,0 +1,144 @@ +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): + webpage = self._download_webpage(url, video_id, + u'Downloading video info JSON', + u'unable to download video info JSON') + + response = json.loads(webpage) + 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 |