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 # Live streams heuristic does not always work (e.g. geo restricted to Germany
27 # http://hls-geo.daserste.de/i/videoportal/Film/c_620000/622873/format,716451,716457,716450,716458,716459,.mp4.csmil/index_4_av.m3u8?null=0)
28 # r'#EXT-X-MEDIA-SEQUENCE:(?!0$)', # live streams [3]
29 r'#EXT-X-PLAYLIST-TYPE:EVENT', # media segments may be appended to the end of
30 # event media playlists [4]
31 # 1. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.2.4
32 # 2. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.2.2
33 # 3. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.3.2
34 # 4. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.3.5
36 return all(not re.search(feature, manifest) for feature in UNSUPPORTED_FEATURES)
38 def real_download(self, filename, info_dict):
39 man_url = info_dict['url']
40 self.to_screen('[%s] Downloading m3u8 manifest' % self.FD_NAME)
41 manifest = self.ydl.urlopen(man_url).read()
43 s = manifest.decode('utf-8', 'ignore')
45 if not self.can_download(s):
47 'hlsnative has detected features it does not support, '
48 'extraction will be delegated to ffmpeg')
49 fd = FFmpegFD(self.ydl, self.params)
50 for ph in self._progress_hooks:
51 fd.add_progress_hook(ph)
52 return fd.real_download(filename, info_dict)
55 for line in s.splitlines():
57 if line and not line.startswith('#'):
60 if re.match(r'^https?://', line)
61 else compat_urlparse.urljoin(man_url, line))
62 fragment_urls.append(segment_url)
63 # We only download the first fragment during the test
64 if self.params.get('test', False):
69 'total_frags': len(fragment_urls),
72 self._prepare_and_start_frag_download(ctx)
75 for i, frag_url in enumerate(fragment_urls):
76 frag_filename = '%s-Frag%d' % (ctx['tmpfilename'], i)
77 success = ctx['dl'].download(frag_filename, {'url': frag_url})
80 down, frag_sanitized = sanitize_open(frag_filename, 'rb')
81 ctx['dest_stream'].write(down.read())
83 frags_filenames.append(frag_sanitized)
85 self._finish_frag_download(ctx)
87 for frag_file in frags_filenames:
88 os.remove(encodeFilename(frag_file))