[litv] Add new extractor

LiTV is a streaming platform providing free and paid legal contents in
Taiwan.

youtube_dl/extractor/extractors.py

@@ -384,6 +384,7 @@
     LimelightChannelIE,
     LimelightChannelListIE,
 )
+from .litv import LiTVIE
 from .liveleak import LiveLeakIE
 from .livestream import (
     LivestreamIE,

youtube_dl/extractor/litv.py

@@ -0,0 +1,137 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import json
+import re
+
+from .common import InfoExtractor
+from ..utils import (
+    ExtractorError,
+    int_or_none,
+    smuggle_url,
+    unsmuggle_url,
+)
+
+
+class LiTVIE(InfoExtractor):
+    _VALID_URL = r'https?://www\.litv\.tv/vod/[^/]+/content\.do\?.*?\bid=(?P<id>[^&]+)'
+
+    _URL_TEMPLATE = 'https://www.litv.tv/vod/%s/content.do?id=%s'
+
+    _TESTS = [{
+        'url': 'https://www.litv.tv/vod/drama/content.do?brc_id=root&id=VOD00041610&isUHEnabled=true&autoPlay=1',
+        'info_dict': {
+            'id': 'VOD00041606',
+            'title': '花千骨',
+        },
+        'playlist_count': 50,
+    }, {
+        'url': 'https://www.litv.tv/vod/drama/content.do?brc_id=root&id=VOD00041610&isUHEnabled=true&autoPlay=1',
+        'info_dict': {
+            'id': 'VOD00041610',
+            'ext': 'mp4',
+            'title': '花千骨第1集',
+            'thumbnail': 're:https?://.*\.jpg$',
+            'description': 'md5:c7017aa144c87467c4fb2909c4b05d6f',
+            'episode_number': 1,
+        },
+        'params': {
+            'noplaylist': True,
+            'skip_download': True,  # m3u8 download
+        },
+        'skip': 'Georestricted to Taiwan',
+    }]
+
+    def _extract_playlist(self, season_list, video_id, vod_data, view_data, prompt=True):
+        episode_title = view_data['title']
+        content_id = season_list['contentId']
+
+        if prompt:
+            self.to_screen('Downloading playlist %s - add --no-playlist to just download video %s' % (content_id, video_id))
+
+        all_episodes = [
+            self.url_result(smuggle_url(
+                self._URL_TEMPLATE % (view_data['contentType'], episode['contentId']),
+                {'force_noplaylist': True}))  # To prevent infinite recursion
+            for episode in season_list['episode']]
+
+        return self.playlist_result(all_episodes, content_id, episode_title)
+
+    def _real_extract(self, url):
+        url, data = unsmuggle_url(url, {})
+
+        video_id = self._match_id(url)
+
+        noplaylist = self._downloader.params.get('noplaylist')
+        noplaylist_prompt = True
+        if 'force_noplaylist' in data:
+            noplaylist = data['force_noplaylist']
+            noplaylist_prompt = False
+
+        webpage = self._download_webpage(url, video_id)
+
+        view_data = dict(map(lambda t: (t[0], t[2]), re.findall(
+            r'viewData\.([a-zA-Z]+)\s*=\s*(["\'])([^"\']+)\2',
+            webpage)))
+
+        vod_data = self._parse_json(self._search_regex(
+            'var\s+vod\s*=\s*([^;]+)', webpage, 'VOD data', default='{}'),
+            video_id)
+
+        season_list = list(vod_data.get('seasonList', {}).values())
+        if season_list:
+            if not noplaylist:
+                return self._extract_playlist(
+                    season_list[0], video_id, vod_data, view_data,
+                    prompt=noplaylist_prompt)
+
+            if noplaylist_prompt:
+                self.to_screen('Downloading just video %s because of --no-playlist' % video_id)
+
+        # In browsers `getMainUrl` request is always issued. Usually this
+        # endpoint gives the same result as the data embedded in the webpage.
+        # If georestricted, there are no embedded data, so an extra request is
+        # necessary to get the error code
+        video_data = self._parse_json(self._search_regex(
+            r'uiHlsUrl\s*=\s*testBackendData\(([^;]+)\);',
+            webpage, 'video data', default='{}'), video_id)
+        if not video_data:
+            payload = {
+                'assetId': view_data['assetId'],
+                'watchDevices': vod_data['watchDevices'],
+                'contentType': view_data['contentType'],
+            }
+            video_data = self._download_json(
+                'https://www.litv.tv/vod/getMainUrl', video_id,
+                data=json.dumps(payload).encode('utf-8'),
+                headers={'Content-Type': 'application/json'})
+
+        if not video_data.get('fullpath'):
+            error_msg = video_data.get('errorMessage')
+            if error_msg == 'vod.error.outsideregionerror':
+                self.raise_geo_restricted('This video is available in Taiwan only')
+            if error_msg:
+                raise ExtractorError('%s said: %s' % (self.IE_NAME, error_msg), expected=True)
+            raise ExtractorError('Unexpected result from %s' % self.IE_NAME)
+
+        formats = self._extract_m3u8_formats(
+            video_data['fullpath'], video_id, ext='mp4', m3u8_id='hls')
+        for a_format in formats:
+            # LiTV HLS segments doesn't like compressions
+            a_format.setdefault('http_headers', {})['Youtubedl-no-compression'] = True
+
+        title = view_data['title'] + view_data.get('secondaryMark', '')
+        description = view_data.get('description')
+        thumbnail = view_data.get('imageFile')
+        categories = [item['name'] for item in vod_data.get('category', [])]
+        episode = int_or_none(view_data.get('episode'))
+
+        return {
+            'id': video_id,
+            'formats': formats,
+            'title': title,
+            'description': description,
+            'thumbnail': thumbnail,
+            'categories': categories,
+            'episode_number': episode,
+        }