Periscope.tv profile processing broken

[RealDolos]

• I've verified and I assure that I'm running youtube-dl 2016.05.16
• At least skimmed through README and most notably FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

---

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)

---

STR:

1. Run youtube-dl on a periscope.tv profile page with archived or live streams such as https://www.periscope.tv/someuser (cannot give working example as streams are only archived 24h and I cannot know when this issue is read)
2. youtube-dl will report it did not find any videos, although there are some

Expected:

• youtube-dl will enumerate and download any live and archived broadcasts.

periscope.tv seems to have changed their website, breaking youtube-dl in the process.
While user and broadcast data was previously available from some meta tags, this appears to no longer be the case.
Instead data is available in a huge data-store= attribute on some element.

My "hack it into submission" patch, "I feel unclean now" Edition:

diff --git a/youtube_dl/extractor/periscope.py b/youtube_dl/extractor/periscope.py
index 440fb84..c3bc744 100644
--- a/youtube_dl/extractor/periscope.py
+++ b/youtube_dl/extractor/periscope.py
@@ -111,9 +111,18 @@ class PeriscopeUserIE(InfoExtractor):
             self._html_search_meta('user-broadcasts', webpage, default='{}'),
             user_id)

-        entries = [
+        entries = list(reversed([
             self.url_result(
                 'https://www.periscope.tv/%s/%s' % (user_id, broadcast['id']))
-            for broadcast in user_broadcasts.get('broadcasts', [])]
+            for broadcast in user_broadcasts.get('broadcasts', [])]))
+
+        if not entries:
+            new_data = self._parse_json(self._html_search_regex(
+                r'data-store="(.*?)"', webpage, user_id, default="{}"), user_id)
+            username = new_data.get("User", {}).get("user", {}).get("display_name")
+            broadcasts = new_data.get("UserBroadcastHistory", {}).get("broadcasts", [])
+            entries = list(reversed([
+                self.url_result('https://www.periscope.tv/%s/%s' % (user_id, broadcast['id']))
+                for broadcast in broadcasts]))

         return self.playlist_result(entries, user_id, username)

Not currently in the mood to clean this up and do a PR, maybe later if nobody else (@dstftw ?) does it.