1 from __future__ import unicode_literals
6 from .fragment import FragmentFD
7 from .external import FFmpegFD
9 from ..compat import compat_urlparse
16 class HlsFD(FragmentFD):
17 """ A limited implementation that does not require ffmpeg """
22 def can_download(manifest):
23 UNSUPPORTED_FEATURES = (
24 r'#EXT-X-KEY:METHOD=(?!NONE)', # encrypted streams [1]
25 r'#EXT-X-BYTERANGE', # playlists composed of byte ranges of media files [2]
26 r'#EXT-X-MEDIA-SEQUENCE:(?!0$)', # live streams [3]
27 # 1. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.2.4
28 # 2. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.2.2
29 # 3. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.3.2
31 return all(not re.search(feature, manifest) for feature in UNSUPPORTED_FEATURES)
33 def real_download(self, filename, info_dict):
34 man_url = info_dict['url']
35 self.to_screen('[%s] Downloading m3u8 manifest' % self.FD_NAME)
36 manifest = self.ydl.urlopen(man_url).read()
38 s = manifest.decode('utf-8', 'ignore')
40 if not self.can_download(s):
42 'hlsnative has detected features it does not support, '
43 'extraction will be delegated to ffmpeg')
44 fd = FFmpegFD(self.ydl, self.params)
45 for ph in self._progress_hooks:
46 fd.add_progress_hook(ph)
47 return fd.real_download(filename, info_dict)
50 for line in s.splitlines():
52 if line and not line.startswith('#'):
55 if re.match(r'^https?://', line)
56 else compat_urlparse.urljoin(man_url, line))
57 fragment_urls.append(segment_url)
58 # We only download the first fragment during the test
59 if self.params.get('test', False):
64 'total_frags': len(fragment_urls),
67 self._prepare_and_start_frag_download(ctx)
70 for i, frag_url in enumerate(fragment_urls):
71 frag_filename = '%s-Frag%d' % (ctx['tmpfilename'], i)
72 success = ctx['dl'].download(frag_filename, {'url': frag_url})
75 down, frag_sanitized = sanitize_open(frag_filename, 'rb')
76 ctx['dest_stream'].write(down.read())
78 frags_filenames.append(frag_sanitized)
80 self._finish_frag_download(ctx)
82 for frag_file in frags_filenames:
83 os.remove(encodeFilename(frag_file))