[download/external] move the check for multiple selected formats to get_suitable_downloader

youtube_dl/downloader/__init__.py

@@ -32,7 +32,7 @@ def get_suitable_downloader(info_dict, params={}):
     protocol = determine_protocol(info_dict)
     info_dict['protocol'] = protocol
 
-    # if (info_dict.get('start_time') or info_dict.get('end_time')) and FFmpegFD.can_download(info_dict):
+    # if (info_dict.get('start_time') or info_dict.get('end_time')) and not info_dict.get('requested_formats') and FFmpegFD.can_download(info_dict):
     #     return FFmpegFD
 
     external_downloader = params.get('external_downloader')

youtube_dl/downloader/external.py

@@ -166,7 +166,7 @@ class HttpieFD(ExternalFD):
 class FFmpegFD(ExternalFD):
     @classmethod
     def supports(cls, info_dict):
-        return info_dict['protocol'] in ('http', 'https', 'ftp', 'ftps', 'm3u8', 'rtsp', 'rtmp', 'mms') and not info_dict.get('requested_formats')
+        return info_dict['protocol'] in ('http', 'https', 'ftp', 'ftps', 'm3u8', 'rtsp', 'rtmp', 'mms')
 
     @classmethod
     def available(cls):