[extractor] Framework for embed detection (#4307)
This commit is contained in:
pukkandan
parent
47304e07dc
commit
8f97a15d1c
8 changed files with 149 additions and 77 deletions
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@ -9,11 +9,13 @@ from ..utils import (
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write_string,
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)
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# These bloat the lazy_extractors, so allow them to passthrough silently
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ALLOWED_CLASSMETHODS = {'get_testcases', 'extract_from_webpage'}
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class LazyLoadMetaClass(type):
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def __getattr__(cls, name):
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# "_TESTS" bloat the lazy_extractors
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if '_real_class' not in cls.__dict__ and name != 'get_testcases':
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if '_real_class' not in cls.__dict__ and name not in ALLOWED_CLASSMETHODS:
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write_string(
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'WARNING: Falling back to normal extractor since lazy extractor '
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f'{cls.__name__} does not have attribute {name}{bug_reports_message()}\n')
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@ -11,7 +11,7 @@ import optparse
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from inspect import getsource
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NO_ATTR = object()
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STATIC_CLASS_PROPERTIES = ['IE_NAME', 'IE_DESC', 'SEARCH_KEY', '_WORKING', '_NETRC_MACHINE', 'age_limit']
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STATIC_CLASS_PROPERTIES = ['IE_NAME', 'IE_DESC', 'SEARCH_KEY', '_VALID_URL', '_WORKING', '_NETRC_MACHINE', 'age_limit']
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CLASS_METHODS = [
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'ie_key', 'working', 'description', 'suitable', '_match_valid_url', '_match_id', 'get_temp_id', 'is_suitable'
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]
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@ -116,11 +116,6 @@ def build_lazy_ie(ie, name, attr_base):
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}.get(base.__name__, base.__name__) for base in ie.__bases__)
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s = IE_TEMPLATE.format(name=name, module=ie.__module__, bases=bases)
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valid_url = getattr(ie, '_VALID_URL', None)
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if not valid_url and hasattr(ie, '_make_valid_url'):
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valid_url = ie._make_valid_url()
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if valid_url:
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s += f' _VALID_URL = {valid_url!r}\n'
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return s + '\n'.join(extra_ie_code(ie, attr_base))
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@ -1566,7 +1566,8 @@ class YoutubeDL:
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result_type = ie_result.get('_type', 'video')
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if result_type in ('url', 'url_transparent'):
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ie_result['url'] = sanitize_url(ie_result['url'])
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ie_result['url'] = sanitize_url(
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ie_result['url'], scheme='http' if self.params.get('prefer_insecure') else 'https')
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if ie_result.get('original_url'):
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extra_info.setdefault('original_url', ie_result['original_url'])
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@ -402,11 +402,11 @@ class BrightcoveNewIE(AdobePassIE):
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@staticmethod
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def _extract_url(ie, webpage):
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urls = BrightcoveNewIE._extract_urls(ie, webpage)
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urls = BrightcoveNewIE._extract_brightcove_urls(ie, webpage)
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return urls[0] if urls else None
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@staticmethod
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def _extract_urls(ie, webpage):
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def _extract_brightcove_urls(ie, webpage):
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# Reference:
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# 1. http://docs.brightcove.com/en/video-cloud/brightcove-player/guides/publish-video.html#setvideoiniframe
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# 2. http://docs.brightcove.com/en/video-cloud/brightcove-player/guides/publish-video.html#tag
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@ -14,6 +14,7 @@ import random
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import re
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import sys
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import time
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import types
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import urllib.parse
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import urllib.request
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import xml.etree.ElementTree
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@ -23,6 +24,7 @@ from ..compat import compat_etree_fromstring, compat_expanduser, compat_os_name
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from ..downloader import FileDownloader
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from ..downloader.f4m import get_base_url, remove_encrypted_media
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from ..utils import (
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IDENTITY,
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JSON_LD_RE,
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NO_DEFAULT,
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ExtractorError,
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@ -59,6 +61,7 @@ from ..utils import (
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parse_m3u8_attributes,
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parse_resolution,
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sanitize_filename,
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sanitize_url,
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sanitized_Request,
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str_or_none,
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str_to_int,
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@ -431,14 +434,26 @@ class InfoExtractor:
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title, description etc.
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Subclasses of this should define a _VALID_URL regexp and, re-define the
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_real_extract() and (optionally) _real_initialize() methods.
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Probably, they should also be added to the list of extractors.
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Subclasses of this should also be added to the list of extractors and
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should define a _VALID_URL regexp and, re-define the _real_extract() and
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(optionally) _real_initialize() methods.
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Subclasses may also override suitable() if necessary, but ensure the function
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signature is preserved and that this function imports everything it needs
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(except other extractors), so that lazy_extractors works correctly.
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Subclasses can define a list of _EMBED_REGEX, which will be searched for in
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the HTML of Generic webpages. It may also override _extract_embed_urls
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or _extract_from_webpage as necessary. While these are normally classmethods,
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_extract_from_webpage is allowed to be an instance method.
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_extract_from_webpage may raise self.StopExtraction() to stop further
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processing of the webpage and obtain exclusive rights to it. This is useful
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when the extractor cannot reliably be matched using just the URL.
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Eg: invidious/peertube instances
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Embed-only extractors can be defined by setting _VALID_URL = False.
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To support username + password (or netrc) login, the extractor must define a
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_NETRC_MACHINE and re-define _perform_login(username, password) and
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(optionally) _initialize_pre_login() methods. The _perform_login method will
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@ -476,6 +491,8 @@ class InfoExtractor:
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_NETRC_MACHINE = None
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IE_DESC = None
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SEARCH_KEY = None
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_VALID_URL = None
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_EMBED_REGEX = []
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def _login_hint(self, method=NO_DEFAULT, netrc=None):
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password_hint = f'--username and --password, or --netrc ({netrc or self._NETRC_MACHINE}) to provide account credentials'
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@ -499,12 +516,12 @@ class InfoExtractor:
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@classmethod
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def _match_valid_url(cls, url):
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if cls._VALID_URL is False:
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return None
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# This does not use has/getattr intentionally - we want to know whether
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# we have cached the regexp for *this* class, whereas getattr would also
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# match the superclass
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if '_VALID_URL_RE' not in cls.__dict__:
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if '_VALID_URL' not in cls.__dict__:
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cls._VALID_URL = cls._make_valid_url()
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cls._VALID_URL_RE = re.compile(cls._VALID_URL)
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return cls._VALID_URL_RE.match(url)
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@ -1143,10 +1160,12 @@ class InfoExtractor:
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'url': url,
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}
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def playlist_from_matches(self, matches, playlist_id=None, playlist_title=None, getter=None, ie=None, video_kwargs=None, **kwargs):
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urls = (self.url_result(self._proto_relative_url(m), ie, **(video_kwargs or {}))
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for m in orderedSet(map(getter, matches) if getter else matches))
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return self.playlist_result(urls, playlist_id, playlist_title, **kwargs)
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@classmethod
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def playlist_from_matches(cls, matches, playlist_id=None, playlist_title=None,
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getter=IDENTITY, ie=None, video_kwargs=None, **kwargs):
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return cls.playlist_result(
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(cls.url_result(m, ie, **(video_kwargs or {})) for m in orderedSet(map(getter, matches), lazy=True)),
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playlist_id, playlist_title, **kwargs)
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@staticmethod
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def playlist_result(entries, playlist_id=None, playlist_title=None, playlist_description=None, *, multi_video=False, **kwargs):
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@ -1353,12 +1372,20 @@ class InfoExtractor:
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def _dc_search_uploader(self, html):
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return self._html_search_meta('dc.creator', html, 'uploader')
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def _rta_search(self, html):
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@staticmethod
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def _rta_search(html):
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# See http://www.rtalabel.org/index.php?content=howtofaq#single
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if re.search(r'(?ix)<meta\s+name="rating"\s+'
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r' content="RTA-5042-1996-1400-1577-RTA"',
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html):
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return 18
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# And then there are the jokers who advertise that they use RTA, but actually don't.
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AGE_LIMIT_MARKERS = [
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r'Proudly Labeled <a href="http://www\.rtalabel\.org/" title="Restricted to Adults">RTA</a>',
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]
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if any(re.search(marker, html) for marker in AGE_LIMIT_MARKERS):
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return 18
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return 0
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def _media_rating_search(self, html):
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@ -1965,14 +1992,9 @@ class InfoExtractor:
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else 'https:')
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def _proto_relative_url(self, url, scheme=None):
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if url is None:
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return url
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if url.startswith('//'):
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if scheme is None:
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scheme = self.http_scheme()
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return scheme + url
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else:
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return url
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scheme = scheme or self.http_scheme()
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assert scheme.endswith(':')
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return sanitize_url(url, scheme=scheme[:-1])
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def _sleep(self, timeout, video_id, msg_template=None):
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if msg_template is None:
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@ -3767,10 +3789,12 @@ class InfoExtractor:
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headers['Ytdl-request-proxy'] = geo_verification_proxy
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return headers
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def _generic_id(self, url):
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@staticmethod
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def _generic_id(url):
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return urllib.parse.unquote(os.path.splitext(url.rstrip('/').split('/')[-1])[0])
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def _generic_title(self, url):
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@staticmethod
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def _generic_title(url):
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return urllib.parse.unquote(os.path.splitext(url_basename(url))[0])
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@staticmethod
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@ -3816,6 +3840,37 @@ class InfoExtractor:
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self.to_screen(f'Downloading {playlist_label}{playlist_id} - add --no-playlist to download just the {video_label}{video_id}')
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return True
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@classmethod
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def extract_from_webpage(cls, ydl, url, webpage):
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ie = (cls if isinstance(cls._extract_from_webpage, types.MethodType)
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else ydl.get_info_extractor(cls.ie_key()))
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yield from ie._extract_from_webpage(url, webpage) or []
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@classmethod
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def _extract_from_webpage(cls, url, webpage):
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for embed_url in orderedSet(
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cls._extract_embed_urls(url, webpage) or [], lazy=True):
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yield cls.url_result(embed_url, cls)
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@classmethod
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def _extract_embed_urls(cls, url, webpage):
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"""@returns all the embed urls on the webpage"""
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if '_EMBED_URL_RE' not in cls.__dict__:
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assert isinstance(cls._EMBED_REGEX, (list, tuple))
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for idx, regex in enumerate(cls._EMBED_REGEX):
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assert regex.count('(?P<url>') == 1, \
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f'{cls.__name__}._EMBED_REGEX[{idx}] must have exactly 1 url group\n\t{regex}'
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cls._EMBED_URL_RE = tuple(map(re.compile, cls._EMBED_REGEX))
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for regex in cls._EMBED_URL_RE:
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for mobj in regex.finditer(webpage):
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embed_url = urllib.parse.urljoin(url, unescapeHTML(mobj.group('url')))
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if cls._VALID_URL is False or cls.suitable(embed_url):
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yield embed_url
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class StopExtraction(Exception):
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pass
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class SearchInfoExtractor(InfoExtractor):
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"""
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@ -3826,8 +3881,8 @@ class SearchInfoExtractor(InfoExtractor):
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_MAX_RESULTS = float('inf')
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@classmethod
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def _make_valid_url(cls):
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@classproperty
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def _VALID_URL(cls):
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return r'%s(?P<prefix>|[1-9][0-9]*|all):(?P<query>[\s\S]+)' % cls._SEARCH_KEY
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def _real_extract(self, query):
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@ -3,6 +3,8 @@ import re
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import urllib.parse
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import xml.etree.ElementTree
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from . import gen_extractor_classes
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from .common import InfoExtractor # isort: split
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from .ant1newsgr import Ant1NewsGrEmbedIE
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from .anvato import AnvatoIE
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from .apa import APAIE
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@ -14,7 +16,6 @@ from .blogger import BloggerIE
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from .brightcove import BrightcoveLegacyIE, BrightcoveNewIE
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from .channel9 import Channel9IE
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from .cloudflarestream import CloudflareStreamIE
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from .common import InfoExtractor
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from .commonprotocols import RtmpIE
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from .condenast import CondeNastIE
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from .dailymail import DailyMailIE
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@ -115,6 +116,7 @@ from ..utils import (
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determine_ext,
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dict_get,
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float_or_none,
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format_field,
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int_or_none,
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is_html,
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js_to_json,
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@ -2641,8 +2643,15 @@ class GenericIE(InfoExtractor):
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"""Report information extraction."""
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self._downloader.to_screen('[redirect] Following redirect to %s' % new_url)
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def report_detected(self, name):
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self._downloader.write_debug(f'Identified a {name}')
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def report_detected(self, name, num=1, note=None):
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if num > 1:
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name += 's'
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elif not num:
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return
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else:
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num = 'a'
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self._downloader.write_debug(f'Identified {num} {name}{format_field(note, None, "; %s")}')
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def _extract_rss(self, url, video_id, doc):
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NS_MAP = {
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@ -2854,8 +2863,7 @@ class GenericIE(InfoExtractor):
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if not self.get_param('test', False) and not is_intentional:
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force = self.get_param('force_generic_extractor', False)
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self.report_warning(
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'%s on generic information extractor.' % ('Forcing' if force else 'Falling back'))
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self.report_warning('%s generic information extractor' % ('Forcing' if force else 'Falling back on'))
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first_bytes = full_response.read(512)
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@ -2933,6 +2941,22 @@ class GenericIE(InfoExtractor):
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self.report_detected('Camtasia video')
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return camtasia_res
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info_dict.update({
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# it's tempting to parse this further, but you would
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# have to take into account all the variations like
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# Video Title - Site Name
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# Site Name | Video Title
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# Video Title - Tagline | Site Name
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# and so on and so forth; it's just not practical
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'title': (self._og_search_title(webpage, default=None)
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or self._html_extract_title(webpage, 'video title', default='video')),
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'description': self._og_search_description(webpage, default=None),
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'thumbnail': self._og_search_thumbnail(webpage, default=None),
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'age_limit': self._rta_search(webpage),
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})
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domain_name = self._search_regex(r'^(?:https?://)?([^/]*)/.*', url, 'video uploader')
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# Sometimes embedded video player is hidden behind percent encoding
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# (e.g. https://github.com/ytdl-org/youtube-dl/issues/2448)
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# Unescaping the whole page allows to handle those cases in a generic way
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@ -2946,40 +2970,12 @@ class GenericIE(InfoExtractor):
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r'<div[^>]+class=[^>]*?\bsqs-video-wrapper\b[^>]*>',
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lambda x: unescapeHTML(x.group(0)), webpage)
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# it's tempting to parse this further, but you would
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# have to take into account all the variations like
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# Video Title - Site Name
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# Site Name | Video Title
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# Video Title - Tagline | Site Name
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# and so on and so forth; it's just not practical
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video_title = (self._og_search_title(webpage, default=None)
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or self._html_extract_title(webpage, 'video title', default='video'))
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# TODO: Remove
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video_title, video_description, video_thumbnail, age_limit, video_uploader = \
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info_dict['title'], info_dict['description'], info_dict['thumbnail'], info_dict['age_limit'], domain_name
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# Try to detect age limit automatically
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age_limit = self._rta_search(webpage)
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# And then there are the jokers who advertise that they use RTA,
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# but actually don't.
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AGE_LIMIT_MARKERS = [
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r'Proudly Labeled <a href="http://www\.rtalabel\.org/" title="Restricted to Adults">RTA</a>',
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]
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if any(re.search(marker, webpage) for marker in AGE_LIMIT_MARKERS):
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age_limit = 18
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# video uploader is domain name
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video_uploader = self._search_regex(
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r'^(?:https?://)?([^/]*)/.*', url, 'video uploader')
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video_description = self._og_search_description(webpage, default=None)
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video_thumbnail = self._og_search_thumbnail(webpage, default=None)
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info_dict.update({
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'title': video_title,
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'description': video_description,
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'thumbnail': video_thumbnail,
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'age_limit': age_limit,
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})
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self._downloader.write_debug('Looking for video embeds')
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# TODO: Move Embeds
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self._downloader.write_debug('Looking for single embeds')
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# Look for Brightcove Legacy Studio embeds
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bc_urls = BrightcoveLegacyIE._extract_brightcove_urls(webpage)
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@ -2998,7 +2994,7 @@ class GenericIE(InfoExtractor):
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}
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# Look for Brightcove New Studio embeds
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bc_urls = BrightcoveNewIE._extract_urls(self, webpage)
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bc_urls = BrightcoveNewIE._extract_brightcove_urls(self, webpage)
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if bc_urls:
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return self.playlist_from_matches(
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bc_urls, video_id, video_title,
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@ -3246,7 +3242,7 @@ class GenericIE(InfoExtractor):
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return self.playlist_from_matches(sportbox_urls, video_id, video_title, ie=SportBoxIE.ie_key())
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# Look for embedded Spotify player
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spotify_urls = SpotifyBaseIE._extract_embed_urls(webpage)
|
||||
spotify_urls = SpotifyBaseIE._extract_urls(webpage)
|
||||
if spotify_urls:
|
||||
return self.playlist_from_matches(spotify_urls, video_id, video_title)
|
||||
|
||||
|
|
@ -3837,6 +3833,30 @@ class GenericIE(InfoExtractor):
|
|||
tiktok_urls = TikTokIE._extract_urls(webpage)
|
||||
if tiktok_urls:
|
||||
return self.playlist_from_matches(tiktok_urls, video_id, video_title)
|
||||
# TODO: END: Move Embeds
|
||||
|
||||
self._downloader.write_debug('Looking for embeds')
|
||||
embeds = []
|
||||
for ie in gen_extractor_classes():
|
||||
gen = ie.extract_from_webpage(self._downloader, url, webpage)
|
||||
current_embeds = []
|
||||
try:
|
||||
while True:
|
||||
current_embeds.append(next(gen))
|
||||
except self.StopExtraction:
|
||||
self.report_detected(f'{ie.IE_NAME} exclusive embed', len(current_embeds),
|
||||
embeds and 'discarding other embeds')
|
||||
embeds = current_embeds
|
||||
break
|
||||
except StopIteration:
|
||||
self.report_detected(f'{ie.IE_NAME} embed', len(current_embeds))
|
||||
embeds.extend(current_embeds)
|
||||
|
||||
del current_embeds
|
||||
if len(embeds) == 1:
|
||||
return {**info_dict, **embeds[0]}
|
||||
elif embeds:
|
||||
return self.playlist_result(embeds, **info_dict)
|
||||
|
||||
# Look for HTML5 media
|
||||
entries = self._parse_html5_media_entries(url, webpage, video_id, m3u8_id='hls')
|
||||
|
|
@ -4119,7 +4139,6 @@ class GenericIE(InfoExtractor):
|
|||
entries.append(self.url_result(video_url, 'Youtube'))
|
||||
continue
|
||||
|
||||
# here's a fun little line of code for you:
|
||||
video_id = os.path.splitext(video_id)[0]
|
||||
headers = {
|
||||
'referer': full_response.geturl()
|
||||
|
|
|
|||
|
|
@ -98,7 +98,7 @@ class SpotifyBaseIE(InfoExtractor):
|
|||
}
|
||||
|
||||
@classmethod
|
||||
def _extract_embed_urls(cls, webpage):
|
||||
def _extract_urls(cls, webpage):
|
||||
return re.findall(
|
||||
r'<iframe[^>]+src="(https?://open\.spotify.com/embed/[^"]+)"',
|
||||
webpage)
|
||||
|
|
|
|||
|
|
@ -705,13 +705,13 @@ def sanitize_path(s, force=False):
|
|||
return os.path.join(*sanitized_path)
|
||||
|
||||
|
||||
def sanitize_url(url):
|
||||
def sanitize_url(url, *, scheme='http'):
|
||||
# Prepend protocol-less URLs with `http:` scheme in order to mitigate
|
||||
# the number of unwanted failures due to missing protocol
|
||||
if url is None:
|
||||
return
|
||||
elif url.startswith('//'):
|
||||
return 'http:%s' % url
|
||||
return f'{scheme}:{url}'
|
||||
# Fix some common typos seen so far
|
||||
COMMON_TYPOS = (
|
||||
# https://github.com/ytdl-org/youtube-dl/issues/15649
|
||||
|
|
|
|||
Loading…
Reference in a new issue