setup: add youtube_dl as dependency

rewrite: add call to _live_rewrite_headers to get correct headers for
proxy on video info

pywb/webapp/live_rewrite_handler.py

@@ -101,7 +101,8 @@ class RewriteHandler(SearchPageWbUrlHandler):
         if self.default_proxy:
             proxies = {'http': self.default_proxy}
 
-            headers = {'Content-Type': content_type}
+            headers = self._live_request_headers(wbrequest)
+            headers['Content-Type'] = content_type
 
             url = HttpsUrlRewriter.remove_https(wbrequest.wb_url.url)
 

setup.py

@@ -70,6 +70,7 @@ setup(
         'jinja2',
         'surt',
         'pyyaml',
+        'youtube_dl'
        ],
     tests_require=[
         'pytest',