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[downloader/hls] Delegate extraction to ffmpeg when unsupported features detected

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Sergey M․ 2016-05-01 13:56:51 +06:00
parent 4bd143a3a0
commit 0d66bd0eab
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23
youtube_dl/downloader/hls.py
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@ -4,6 +4,7 @@ import os.path
import re
from .fragment import FragmentFD
from .external import FFmpegFD
from ..compat import compat_urlparse
from ..utils import (
@ -17,12 +18,34 @@ class HlsFD(FragmentFD):
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]
r'#EXT-X-MEDIA-SEQUENCE:(?!0$)', # live streams [3]
# 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
)
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()