- url = info_dict['url']
- protocol = info_dict.get('protocol')
-
- if url.startswith('rtmp'):
- return RtmpFD
- if protocol == 'm3u8_native':
- return NativeHlsFD
- if (protocol == 'm3u8') or (protocol is None and determine_ext(url) == 'm3u8'):
+ protocol = determine_protocol(info_dict)
+ info_dict['protocol'] = protocol
+
+ if (info_dict.get('start_time') or info_dict.get('end_time')) and FFmpegFD.available() and FFmpegFD.supports(info_dict):
+ return FFmpegFD
+
+ external_downloader = params.get('external_downloader')
+ if external_downloader is not None:
+ ed = get_external_downloader(external_downloader)
+ if ed.available() and ed.supports(info_dict):
+ return ed
+
+ if protocol == 'm3u8' and params.get('hls_prefer_native'):