From: Nathan Rossi <nathan@nathanrossi.com>
Date: Fri, 25 May 2018 16:34:22 +0000 (+1000)
Subject: [facebook] Add support for tahoe player videos (closes #15441)
X-Git-Url: http://git.cielonegro.org/gitweb.cgi?a=commitdiff_plain;h=9d082e7cb81c63dc5c2e616cd7ca7237a5e0d642;p=youtube-dl.git

[facebook] Add support for tahoe player videos (closes #15441)

Specific videos appear to use a newer/different player, this requires a
second request for the video data as the initial request is missing the
specified data.

Additionally these videos have different page content for the uploader
value, which is stored in the `<meta property="og:title"...>` element of
the initial request.
---

diff --git a/youtube_dl/extractor/facebook.py b/youtube_dl/extractor/facebook.py
index 0971ce356..8bbca4f56 100644
--- a/youtube_dl/extractor/facebook.py
+++ b/youtube_dl/extractor/facebook.py
@@ -56,6 +56,7 @@ class FacebookIE(InfoExtractor):
     _CHROME_USER_AGENT = 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.97 Safari/537.36'
 
     _VIDEO_PAGE_TEMPLATE = 'https://www.facebook.com/video/video.php?v=%s'
+    _VIDEO_PAGE_TAHOE_TEMPLATE = 'https://www.facebook.com/video/tahoe/async/%s/?chain=true&isvideo=true'
 
     _TESTS = [{
         'url': 'https://www.facebook.com/video.php?v=637842556329505&fref=nf',
@@ -208,6 +209,17 @@ class FacebookIE(InfoExtractor):
         # no title
         'url': 'https://www.facebook.com/onlycleverentertainment/videos/1947995502095005/',
         'only_matching': True,
+    }, {
+        'url': 'https://www.facebook.com/WatchESLOne/videos/359649331226507/',
+        'info_dict': {
+            'id': '359649331226507',
+            'ext': 'mp4',
+            'title': '#ESLOne VoD - Birmingham Finals Day#1 Fnatic vs. @Evil Geniuses',
+            'uploader': 'ESL One Dota 2',
+        },
+        'params': {
+            'skip_download': True,
+        },
     }]
 
     @staticmethod
@@ -323,6 +335,24 @@ class FacebookIE(InfoExtractor):
                     server_js_data, lambda x: x['jsmods']['instances'],
                     list) or [])
 
+        if not video_data:
+            # video info not in first request, do a secondary request using tahoe player specific url
+            tahoe_data = self._download_webpage(
+                self._VIDEO_PAGE_TAHOE_TEMPLATE % video_id, video_id,
+                data=urlencode_postdata({
+                    '__user': 0,
+                    '__a': 1,
+                    '__pc': self._search_regex(r'"pkg_cohort":"(.*?)"', webpage, 'pkg cohort', default='PHASED:DEFAULT'),
+                    '__rev': self._search_regex(r'"client_revision":(\d+),', webpage, 'client revision', default=3944515),
+                }),
+                headers={
+                    'Content-Type': 'application/x-www-form-urlencoded',
+                })
+            tahoe_js_data = self._parse_json(self._search_regex(
+                r'for \(;;\);(.+)', tahoe_data,
+                'tahoe js data', default='{}'), video_id, fatal=False)
+            video_data = extract_video_data(tahoe_js_data.get('jsmods', {}).get('instances', []))
+
         if not video_data:
             if not fatal_if_no_video:
                 return webpage, False
@@ -378,9 +408,11 @@ class FacebookIE(InfoExtractor):
             video_title = limit_length(video_title, 80)
         else:
             video_title = 'Facebook video #%s' % video_id
-        uploader = clean_html(get_element_by_id(
-            'fbPhotoPageAuthorName', webpage)) or self._search_regex(
-            r'ownerName\s*:\s*"([^"]+)"', webpage, 'uploader', fatal=False)
+        uploader = clean_html(get_element_by_id('fbPhotoPageAuthorName', webpage))
+        if not uploader:
+            uploader = self._search_regex(
+                [r'ownerName\s*:\s*"([^"]+)"', r'property="og:title"\s*content="(.*?)"'],
+                webpage, 'uploader', fatal=False)
         timestamp = int_or_none(self._search_regex(
             r'<abbr[^>]+data-utime=["\'](\d+)', webpage,
             'timestamp', default=None))