1 from __future__ import unicode_literals
5 from .common import FileDownloader
6 from ..utils import sanitized_Request
9 class DashSegmentsFD(FileDownloader):
11 Download segments in a DASH manifest
13 def real_download(self, filename, info_dict):
14 self.report_destination(filename)
15 tmpfilename = self.temp_name(filename)
16 base_url = info_dict['url']
17 segment_urls = info_dict['segment_urls']
19 is_test = self.params.get('test', False)
20 remaining_bytes = self._TEST_FILE_SIZE if is_test else None
23 def append_url_to_file(outf, target_url, target_name, remaining_bytes=None):
24 self.to_screen('[DashSegments] %s: Downloading %s' % (info_dict['id'], target_name))
25 req = sanitized_Request(target_url)
26 if remaining_bytes is not None:
27 req.add_header('Range', 'bytes=0-%d' % (remaining_bytes - 1))
29 data = self.ydl.urlopen(req).read()
31 if remaining_bytes is not None:
32 data = data[:remaining_bytes]
37 def combine_url(base_url, target_url):
38 if re.match(r'^https?://', target_url):
40 return '%s%s%s' % (base_url, '' if base_url.endswith('/') else '/', target_url)
42 with open(tmpfilename, 'wb') as outf:
43 if info_dict.get('initialization_url'):
45 outf, combine_url(base_url, info_dict['initialization_url']),
46 'initialization segment')
47 for i, segment_url in enumerate(segment_urls):
48 segment_len = append_url_to_file(
49 outf, combine_url(base_url, segment_url),
50 'segment %d / %d' % (i + 1, len(segment_urls)),
52 byte_counter += segment_len
53 if remaining_bytes is not None:
54 remaining_bytes -= segment_len
55 if remaining_bytes <= 0:
58 self.try_rename(tmpfilename, filename)
61 'downloaded_bytes': byte_counter,
62 'total_bytes': byte_counter,