Periscope.tv: bogus uploader_id

[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. Use youtube-dl with an -o template that includes uploader_id
2. The video is saved, but the uploader_id that will be used is not the public uploader id, but the periscope internal, unreadable id, such as 1xnQrXIvKZzjY instead of some_user

Expected:

• Use the correct public uploader id, aka the username or twitter_user_name aka the one used in urls too, and not the internal display_name, where available.

diff --git a/youtube_dl/extractor/periscope.py b/youtube_dl/extractor/periscope.py
index 0a4bc76..440fb84 100644
--- a/youtube_dl/extractor/periscope.py
+++ b/youtube_dl/extractor/periscope.py
@@ -43,7 +43,8 @@ class PeriscopeIE(InfoExtractor):
         status = broadcast['status']

         uploader = broadcast.get('user_display_name') or broadcast_data.get('user', {}).get('display_name')
-        uploader_id = broadcast.get('user_id') or broadcast_data.get('user', {}).get('id')
+        uploader_id = broadcast.get("username") or broadcast.get("twitter_username")
+        uploader_id = uploader_id or broadcast.get('user_id') or broadcast_data.get('user', {}).get('id')

         title = '%s - %s' % (uploader, status) if uploader else status
         state = broadcast.get('state').lower()

cc @dstftw