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[ie/youtube] Cache signature timestamps (#13047)

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Closes #12825
Authored by: bashonly
This commit is contained in:
bashonly 2025-04-29 20:15:17 -05:00 committed by GitHub
parent fd8394bc50
commit 61c9a938b3
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 34 additions and 30 deletions
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64
yt_dlp/extractor/youtube/_video.py
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@ -2122,23 +2122,23 @@ def inner(*args, **kwargs):
return ret
return inner
def _load_nsig_code_from_cache(self, player_url):
cache_id = ('youtube-nsig', self._player_js_cache_key(player_url))
def _load_player_data_from_cache(self, name, player_url):
cache_id = (f'youtube-{name}', self._player_js_cache_key(player_url))
if func_code := self._player_cache.get(cache_id):
return func_code
if data := self._player_cache.get(cache_id):
return data
func_code = self.cache.load(*cache_id, min_ver='2025.03.31')
if func_code:
self._player_cache[cache_id] = func_code
data = self.cache.load(*cache_id, min_ver='2025.03.31')
if data:
self._player_cache[cache_id] = data
return func_code
return data
def _store_nsig_code_to_cache(self, player_url, func_code):
cache_id = ('youtube-nsig', self._player_js_cache_key(player_url))
def _store_player_data_to_cache(self, name, player_url, data):
cache_id = (f'youtube-{name}', self._player_js_cache_key(player_url))
if cache_id not in self._player_cache:
self.cache.store(*cache_id, func_code)
self._player_cache[cache_id] = func_code
self.cache.store(*cache_id, data)
self._player_cache[cache_id] = data
def _decrypt_signature(self, s, video_id, player_url):
"""Turn the encrypted s field into a working signature"""
@ -2181,7 +2181,7 @@ def _decrypt_nsig(self, s, video_id, player_url):
self.write_debug(f'Decrypted nsig {s} => {ret}')
# Only cache nsig func JS code to disk if successful, and only once
self._store_nsig_code_to_cache(player_url, func_code)
self._store_player_data_to_cache('nsig', player_url, func_code)
return ret
def _extract_n_function_name(self, jscode, player_url=None):
@ -2300,7 +2300,7 @@ def _fixup_n_function_code(self, argnames, nsig_code, jscode, player_url):
def _extract_n_function_code(self, video_id, player_url):
player_id = self._extract_player_info(player_url)
func_code = self._load_nsig_code_from_cache(player_url)
func_code = self._load_player_data_from_cache('nsig', player_url)
jscode = func_code or self._load_player(video_id, player_url)
jsi = JSInterpreter(jscode)
@ -2336,23 +2336,27 @@ def _extract_signature_timestamp(self, video_id, player_url, ytcfg=None, fatal=F
Extract signatureTimestamp (sts)
Required to tell API what sig/player version is in use.
"""
sts = None
if isinstance(ytcfg, dict):
sts = int_or_none(ytcfg.get('STS'))
if sts := traverse_obj(ytcfg, ('STS', {int_or_none})):
return sts
if not player_url:
error_msg = 'Cannot extract signature timestamp without player url'
if fatal:
raise ExtractorError(error_msg)
self.report_warning(error_msg)
return None
sts = self._load_player_data_from_cache('sts', player_url)
if sts:
return sts
if code := self._load_player(video_id, player_url, fatal=fatal):
sts = int_or_none(self._search_regex(
r'(?:signatureTimestamp|sts)\s*:\s*(?P<sts>[0-9]{5})', code,
'JS player signature timestamp', group='sts', fatal=fatal))
if sts:
self._store_player_data_to_cache('sts', player_url, sts)
if not sts:
# Attempt to extract from player
if player_url is None:
error_msg = 'Cannot extract signature timestamp without player_url.'
if fatal:
raise ExtractorError(error_msg)
self.report_warning(error_msg)
return
code = self._load_player(video_id, player_url, fatal=fatal)
if code:
sts = int_or_none(self._search_regex(
r'(?:signatureTimestamp|sts)\s*:\s*(?P<sts>[0-9]{5})', code,
'JS player signature timestamp', group='sts', fatal=fatal))
return sts
def _mark_watched(self, video_id, player_responses):