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]
27 # Live streams heuristic does not always work (e.g. geo restricted to Germany
28 # 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)
29 # r'#EXT-X-MEDIA-SEQUENCE:(?!0$)', # live streams [3]
31 # This heuristic also is not correct since segments may not be appended as well.
32 # Twitch vods of finished streams have EXT-X-PLAYLIST-TYPE:EVENT despite
33 # no segments will definitely be appended to the end of the playlist.
34 # r'#EXT-X-PLAYLIST-TYPE:EVENT', # media segments may be appended to the end of
35 # # event media playlists [4]
37 # 1. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.2.4
38 # 2. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.2.2
39 # 3. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.3.2
40 # 4. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.3.5
42 return all(not re.search(feature, manifest) for feature in UNSUPPORTED_FEATURES)
44 def real_download(self, filename, info_dict):
45 man_url = info_dict['url']
46 self.to_screen('[%s] Downloading m3u8 manifest' % self.FD_NAME)
47 manifest = self.ydl.urlopen(man_url).read()
49 s = manifest.decode('utf-8', 'ignore')
51 if not self.can_download(s):
53 'hlsnative has detected features it does not support, '
54 'extraction will be delegated to ffmpeg')
55 fd = FFmpegFD(self.ydl, self.params)
56 for ph in self._progress_hooks:
57 fd.add_progress_hook(ph)
58 return fd.real_download(filename, info_dict)
61 for line in s.splitlines():
63 if line and not line.startswith('#'):
66 if re.match(r'^https?://', line)
67 else compat_urlparse.urljoin(man_url, line))
68 fragment_urls.append(segment_url)
69 # We only download the first fragment during the test
70 if self.params.get('test', False):
75 'total_frags': len(fragment_urls),
78 self._prepare_and_start_frag_download(ctx)
81 for i, frag_url in enumerate(fragment_urls):
82 frag_filename = '%s-Frag%d' % (ctx['tmpfilename'], i)
83 success = ctx['dl'].download(frag_filename, {'url': frag_url})
86 down, frag_sanitized = sanitize_open(frag_filename, 'rb')
87 ctx['dest_stream'].write(down.read())
89 frags_filenames.append(frag_sanitized)
91 self._finish_frag_download(ctx)
93 for frag_file in frags_filenames:
94 os.remove(encodeFilename(frag_file))