from __future__ import unicode_literals import os.path import re from .fragment import FragmentFD from .external import FFmpegFD from ..compat import compat_urlparse from ..utils import ( encodeFilename, sanitize_open, ) class HlsFD(FragmentFD): """ A limited implementation that does not require ffmpeg """ FD_NAME = 'hlsnative' @staticmethod def can_download(manifest): UNSUPPORTED_FEATURES = ( r'#EXT-X-KEY:METHOD=(?!NONE)', # encrypted streams [1] r'#EXT-X-BYTERANGE', # playlists composed of byte ranges of media files [2] # Live streams heuristic does not always work (e.g. geo restricted to Germany # 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) #r'#EXT-X-MEDIA-SEQUENCE:(?!0$)', # live streams [3] r'#EXT-X-PLAYLIST-TYPE:EVENT', # media segments may be appended to the end of # event media playlists [4] # 1. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.2.4 # 2. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.2.2 # 3. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.3.2 # 4. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.3.5 ) return all(not re.search(feature, manifest) for feature in UNSUPPORTED_FEATURES) def real_download(self, filename, info_dict): man_url = info_dict['url'] self.to_screen('[%s] Downloading m3u8 manifest' % self.FD_NAME) manifest = self.ydl.urlopen(man_url).read() s = manifest.decode('utf-8', 'ignore') if not self.can_download(s): self.report_warning( 'hlsnative has detected features it does not support, ' 'extraction will be delegated to ffmpeg') fd = FFmpegFD(self.ydl, self.params) for ph in self._progress_hooks: fd.add_progress_hook(ph) return fd.real_download(filename, info_dict) fragment_urls = [] for line in s.splitlines(): line = line.strip() if line and not line.startswith('#'): segment_url = ( line if re.match(r'^https?://', line) else compat_urlparse.urljoin(man_url, line)) fragment_urls.append(segment_url) # We only download the first fragment during the test if self.params.get('test', False): break ctx = { 'filename': filename, 'total_frags': len(fragment_urls), } self._prepare_and_start_frag_download(ctx) frags_filenames = [] for i, frag_url in enumerate(fragment_urls): frag_filename = '%s-Frag%d' % (ctx['tmpfilename'], i) success = ctx['dl'].download(frag_filename, {'url': frag_url}) if not success: return False down, frag_sanitized = sanitize_open(frag_filename, 'rb') ctx['dest_stream'].write(down.read()) down.close() frags_filenames.append(frag_sanitized) self._finish_frag_download(ctx) for frag_file in frags_filenames: os.remove(encodeFilename(frag_file)) return True