#79 Fix HLS AES-128 with multiple keys in external downloaders

Authored-by: shirtjs <2660574+shirtjs@users.noreply.github.com>

youtube_dlc/downloader/external.py

@@ -126,11 +126,13 @@ class ExternalFD(FileDownloader):
             for [i, url] in enumerate(info_dict['url_list']):
                 tmpsegmentname = '%s_%s.frag' % (tmpfilename, i)
                 file_list.append(tmpsegmentname)
+            key_list = info_dict.get('key_list')
+            decrypt_info = None
             dest, _ = sanitize_open(tmpfilename, 'wb')
-            for i in file_list:
-                src, _ = sanitize_open(i, 'rb')
-                if 'decrypt_info' in info_dict:
-                    decrypt_info = info_dict['decrypt_info']
+            for i, file in enumerate(file_list):
+                src, _ = sanitize_open(file, 'rb')
+                if key_list:
+                    decrypt_info = next((x for x in key_list if x['INDEX'] == i), decrypt_info)
                     if decrypt_info['METHOD'] == 'AES-128':
                         iv = decrypt_info.get('IV')
                         decrypt_info['KEY'] = decrypt_info.get('KEY') or self.ydl.urlopen(

youtube_dlc/downloader/hls.py

@@ -134,6 +134,7 @@ class HlsFD(FragmentFD):
         i = 0
         media_sequence = 0
         decrypt_info = {'METHOD': 'NONE'}
+        key_list = []
         byte_range = {}
         frag_index = 0
         ad_frag_next = False
@@ -215,6 +216,10 @@ class HlsFD(FragmentFD):
                             decrypt_info['URI'] = update_url_query(decrypt_info['URI'], extra_query)
                         if decrypt_url != decrypt_info['URI']:
                             decrypt_info['KEY'] = None
+                    key_data = decrypt_info.copy()
+                    key_data['INDEX'] = frag_index
+                    key_list.append(key_data)
+
                 elif line.startswith('#EXT-X-MEDIA-SEQUENCE'):
                     media_sequence = int(line[22:])
                 elif line.startswith('#EXT-X-BYTERANGE'):
@@ -232,7 +237,7 @@ class HlsFD(FragmentFD):
         if real_downloader:
             info_copy = info_dict.copy()
             info_copy['url_list'] = fragment_urls
-            info_copy['decrypt_info'] = decrypt_info
+            info_copy['key_list'] = key_list
             fd = real_downloader(self.ydl, self.params)
             # TODO: Make progress updates work without hooking twice
             # for ph in self._progress_hooks: