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[infoq] Add audio only format if available (#11565)

* [infoq] Add audio only format if available

Refactor cookie code into a function.
Renamed formats to http_video, http_audio, rtmp_video
Renamed extract functions to video instead of videos as they return
one or no video.

* [infoq] Rename to _extract_cookies as it more than one

* [infoq] Remove redundant determine_ext

* [infoq] Add comment about hardcoded URL

* [infoq] Use _hidden_inputs instead of messy regex

* [infoq] Probe if audio URL is valid

Make it possible to pass headers to _is_valid_url

* [infoq] Add audio only test
master-ytdl-org
Mattias Wadman 8 years ago
committed by Yen Chi Hsuan
parent
commit
45024183ae
2 changed files with 55 additions and 12 deletions
  1. +2
    -2
      youtube_dl/extractor/common.py
  2. +53
    -10
      youtube_dl/extractor/infoq.py

+ 2
- 2
youtube_dl/extractor/common.py View File

@ -1025,13 +1025,13 @@ class InfoExtractor(object):
unique_formats.append(f)
formats[:] = unique_formats
def _is_valid_url(self, url, video_id, item='video'):
def _is_valid_url(self, url, video_id, item='video', headers={}):
url = self._proto_relative_url(url, scheme='http:')
# For now assume non HTTP(S) URLs always valid
if not (url.startswith('http://') or url.startswith('https://')):
return True
try:
self._request_webpage(url, video_id, 'Checking %s URL' % item)
self._request_webpage(url, video_id, 'Checking %s URL' % item, headers=headers)
return True
except ExtractorError as e:
if isinstance(e.cause, compat_urllib_error.URLError):


+ 53
- 10
youtube_dl/extractor/infoq.py View File

@ -4,7 +4,10 @@ from __future__ import unicode_literals
import base64
from ..compat import compat_urllib_parse_unquote
from ..compat import (
compat_urllib_parse_unquote,
compat_urlparse,
)
from ..utils import determine_ext
from .bokecc import BokeCCBaseIE
@ -33,9 +36,21 @@ class InfoQIE(BokeCCBaseIE):
'ext': 'flv',
'description': 'md5:308d981fb28fa42f49f9568322c683ff',
},
}, {
'url': 'https://www.infoq.com/presentations/Simple-Made-Easy',
'md5': '0e34642d4d9ef44bf86f66f6399672db',
'info_dict': {
'id': 'Simple-Made-Easy',
'title': 'Simple Made Easy',
'ext': 'mp3',
'description': 'md5:3e0e213a8bbd074796ef89ea35ada25b',
},
'params': {
'format': 'bestaudio',
},
}]
def _extract_rtmp_videos(self, webpage):
def _extract_rtmp_video(self, webpage):
# The server URL is hardcoded
video_url = 'rtmpe://video.infoq.com/cfx/st/'
@ -47,28 +62,53 @@ class InfoQIE(BokeCCBaseIE):
playpath = 'mp4:' + real_id
return [{
'format_id': 'rtmp',
'format_id': 'rtmp_video',
'url': video_url,
'ext': determine_ext(playpath),
'play_path': playpath,
}]
def _extract_http_videos(self, webpage):
http_video_url = self._search_regex(r'P\.s\s*=\s*\'([^\']+)\'', webpage, 'video URL')
def _extract_cookies(self, webpage):
policy = self._search_regex(r'InfoQConstants.scp\s*=\s*\'([^\']+)\'', webpage, 'policy')
signature = self._search_regex(r'InfoQConstants.scs\s*=\s*\'([^\']+)\'', webpage, 'signature')
key_pair_id = self._search_regex(r'InfoQConstants.sck\s*=\s*\'([^\']+)\'', webpage, 'key-pair-id')
return 'CloudFront-Policy=%s; CloudFront-Signature=%s; CloudFront-Key-Pair-Id=%s' % (
policy, signature, key_pair_id)
def _extract_http_video(self, webpage):
http_video_url = self._search_regex(r'P\.s\s*=\s*\'([^\']+)\'', webpage, 'video URL')
return [{
'format_id': 'http',
'format_id': 'http_video',
'url': http_video_url,
'http_headers': {
'Cookie': 'CloudFront-Policy=%s; CloudFront-Signature=%s; CloudFront-Key-Pair-Id=%s' % (
policy, signature, key_pair_id),
'Cookie': self._extract_cookies(webpage)
},
}]
def _extract_http_audio(self, webpage, video_id):
fields = self._hidden_inputs(webpage)
http_audio_url = fields['filename']
if http_audio_url is None:
return []
cookies_header = {'Cookie': self._extract_cookies(webpage)}
# base URL is found in the Location header in the response returned by
# GET https://www.infoq.com/mp3download.action?filename=... when logged in.
http_audio_url = compat_urlparse.urljoin('http://res.infoq.com/downloads/mp3downloads/', http_audio_url)
# audio file seem to be missing some times even if there is a download link
# so probe URL to make sure
if not self._is_valid_url(http_audio_url, video_id, headers=cookies_header):
return []
return [{
'format_id': 'http_audio',
'url': http_audio_url,
'vcodec': 'none',
'http_headers': cookies_header,
}]
def _real_extract(self, url):
video_id = self._match_id(url)
webpage = self._download_webpage(url, video_id)
@ -80,7 +120,10 @@ class InfoQIE(BokeCCBaseIE):
# for China videos, HTTP video URL exists but always fails with 403
formats = self._extract_bokecc_formats(webpage, video_id)
else:
formats = self._extract_rtmp_videos(webpage) + self._extract_http_videos(webpage)
formats = (
self._extract_rtmp_video(webpage) +
self._extract_http_video(webpage) +
self._extract_http_audio(webpage, video_id))
self._sort_formats(formats)


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