[common] add possibility to customize akamai manifest host

youtube_dl/extractor/common.py

@@ -1967,10 +1967,13 @@ class InfoExtractor(object):
                 entries.append(media_info)
         return entries
 
-    def _extract_akamai_formats(self, manifest_url, video_id):
+    def _extract_akamai_formats(self, manifest_url, video_id, hosts={}):
         formats = []
         hdcore_sign = 'hdcore=3.7.0'
-        f4m_url = re.sub(r'(https?://.+?)/i/', r'\1/z/', manifest_url).replace('/master.m3u8', '/manifest.f4m')
+        f4m_url = re.sub(r'(https?://[^/+])/i/', r'\1/z/', manifest_url).replace('/master.m3u8', '/manifest.f4m')
+        hds_host = hosts.get('hds')
+        if hds_host:
+            f4m_url = re.sub(r'(https?://)[^/]+', r'\1' + hds_host, f4m_url)
         if 'hdcore=' not in f4m_url:
             f4m_url += ('&' if '?' in f4m_url else '?') + hdcore_sign
         f4m_formats = self._extract_f4m_formats(
@@ -1978,7 +1981,10 @@ class InfoExtractor(object):
         for entry in f4m_formats:
             entry.update({'extra_param_to_segment_url': hdcore_sign})
         formats.extend(f4m_formats)
-        m3u8_url = re.sub(r'(https?://.+?)/z/', r'\1/i/', manifest_url).replace('/manifest.f4m', '/master.m3u8')
+        m3u8_url = re.sub(r'(https?://[^/]+)/z/', r'\1/i/', manifest_url).replace('/manifest.f4m', '/master.m3u8')
+        hls_host = hosts.get('hls')
+        if hls_host:
+            m3u8_url = re.sub(r'(https?://)[^/]+', r'\1' + hls_host, m3u8_url)
         formats.extend(self._extract_m3u8_formats(
             m3u8_url, video_id, 'mp4', 'm3u8_native',
             m3u8_id='hls', fatal=False))