Merge pull request #3927 from qrtt1/master

apply ratelimit to f4m

diff --cc youtube_dl/downloader/f4m.py
index 00f3a026c8497953059426e52a6e16c9b0813186,54dd6ac3fc55439f3a5e4b8740331f1593a5ff5f..ef3e0d5f44122621eb9252f93dd1c5471b3fcfee
--- 1/youtube_dl/downloader/f4m.py
--- 2/youtube_dl/downloader/f4m.py
+++ b/youtube_dl/downloader/f4m.py
@@@ -233,9 -230,9 +233,10 @@@ class F4mFD(FileDownloader)
                  'continuedl': True,
                  'quiet': True,
                  'noprogress': True,
+                 'ratelimit': self.params.get('ratelimit', None),
                  'test': self.params.get('test', False),
 -            })
 +            }
 +        )
  
          doc = etree.fromstring(manifest)
          formats = [(int(f.attrib.get('bitrate', -1)), f) for f in doc.findall(_add_ns('media'))]