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