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https://github.com/blackjack4494/yt-dlc.git
synced 2024-09-11 20:12:41 +02:00
Add --rate-limit program option
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parent
7337efbfe4
commit
acd3d84298
35
youtube-dl
35
youtube-dl
@ -78,6 +78,7 @@ class FileDownloader(object):
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format: Video format code.
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outtmpl: Template for output names.
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ignoreerrors: Do not stop on download errors.
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ratelimit: Download speed limit, in bytes/sec.
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"""
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_params = None
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@ -149,6 +150,16 @@ class FileDownloader(object):
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return int(new_min)
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return int(rate)
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@staticmethod
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def parse_bytes(bytestr):
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"""Parse a string indicating a byte quantity into a long integer."""
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matchobj = re.match(r'(?i)^(\d+(?:\.\d+)?)([kMGTPEZY]?)$', bytestr)
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if matchobj is None:
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return None
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number = float(matchobj.group(1))
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multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower())
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return long(round(number * multiplier))
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def set_params(self, params):
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"""Sets parameters."""
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if type(params) != dict:
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@ -193,6 +204,19 @@ class FileDownloader(object):
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raise DownloadError(message)
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return 1
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def slow_down(self, start_time, byte_counter):
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"""Sleep if the download speed is over the rate limit."""
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rate_limit = self._params.get('ratelimit', None)
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if rate_limit is None or byte_counter == 0:
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return
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now = time.time()
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elapsed = now - start_time
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if elapsed <= 0.0:
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return
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speed = float(byte_counter) / elapsed
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if speed > rate_limit:
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time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit)
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def report_destination(self, filename):
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"""Report destination filename."""
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self.to_stdout('[download] Destination: %s' % filename)
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@ -296,6 +320,9 @@ class FileDownloader(object):
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stream.write(data_block)
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block_size = self.best_block_size(after - before, data_block_len)
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# Apply rate limit
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self.slow_down(start, byte_counter)
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self.report_finish()
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if data_len is not None and str(byte_counter) != data_len:
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raise ValueError('Content too short: %s/%s bytes' % (byte_counter, data_len))
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@ -575,6 +602,8 @@ if __name__ == '__main__':
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action='store_const', dest='format', help='alias for -f 17', const='17')
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parser.add_option('-i', '--ignore-errors',
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action='store_true', dest='ignoreerrors', help='continue on download errors', default=False)
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parser.add_option('-r', '--rate-limit',
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dest='ratelimit', metavar='L', help='download rate limit (e.g. 50k or 44.6m)')
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(opts, args) = parser.parse_args()
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# Conflicting, missing and erroneous options
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@ -590,6 +619,11 @@ if __name__ == '__main__':
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sys.exit('ERROR: using title conflicts with using literal title')
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if opts.username is not None and opts.password is None:
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opts.password = getpass.getpass('Type account password and press return:')
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if opts.ratelimit is not None:
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numeric_limit = FileDownloader.parse_bytes(opts.ratelimit)
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if numeric_limit is None:
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sys.exit('ERROR: invalid rate limit specified')
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opts.ratelimit = numeric_limit
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# Information extractors
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youtube_ie = YoutubeIE()
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@ -609,6 +643,7 @@ if __name__ == '__main__':
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or (opts.useliteral and '%(title)s-%(id)s.%(ext)s')
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or '%(id)s.%(ext)s'),
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'ignoreerrors': opts.ignoreerrors,
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'ratelimit': opts.ratelimit,
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})
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fd.add_info_extractor(youtube_ie)
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retcode = fd.download(args)
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