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[youtube] Improvements to JS player extraction (See desc) (#860)

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* fallback player url extraction when it fails to be extracted from the webpage
* don't download js player unnecessarily for clients that don't require it
* try to extract js player url from any additional client configs
* ability to skip the js player usage/download using `player_skip=js`
* ability to skip the initial webpage download using `player_skip=webpage`

known issue:
* authentication for multi-channel accounts and multi-account cookies may not work correctly if the webpage or client configs are skipped
*  formats from the web client requiring signature decryption will be skipped if player js extraction is skipped

Authored by: coletdjnz
pull/918/head
coletdjnz 3 years ago committed by GitHub
parent bccdbd22d5
commit b6de707d13
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 57 additions and 28 deletions
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2
README.md
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@ -1436,7 +1436,7 @@ The following extractors use this feature:
* **youtube**
* `skip`: `hls` or `dash` (or both) to skip download of the respective manifests
* `player_client`: Clients to extract video data from. The main clients are `web`, `android`, `ios`, `mweb`. These also have `_music`, `_embedded`, `_agegate`, and `_creator` variants (Eg: `web_embedded`) (`mweb` has only `_agegate`). By default, `android,web` is used, but the agegate and creator variants are added as required for age-gated videos. Similarly the music variants are added for `music.youtube.com` urls. You can also use `all` to use all the clients
* `player_skip`: `configs` - skip any requests for client configs and use defaults
* `player_skip`: Skip some network requests that are generally needed for robust extraction. One or more of `configs` (skip client configs), `webpage` (skip initial webpage), `js` (skip js player). While these options can help reduce the number of requests needed or avoid some rate-limiting, they could cause some issues. See [#860](https://github.com/yt-dlp/yt-dlp/pull/860) for more details
* `include_live_dash`: Include live dash formats (These formats don't download properly)
* `comment_sort`: `top` or `new` (default) - choose comment sorting mode (on YouTube's side).
* `max_comments`: Maximum amount of comments to download (default all).

83
yt_dlp/extractor/youtube.py
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@ -117,6 +117,7 @@ INNERTUBE_CLIENTS = {
}
},
'INNERTUBE_CONTEXT_CLIENT_NAME': 3,
'REQUIRE_JS_PLAYER': False
},
'android_embedded': {
'INNERTUBE_API_KEY': 'AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8',
@ -126,7 +127,8 @@ INNERTUBE_CLIENTS = {
'clientVersion': '16.20',
},
},
'INNERTUBE_CONTEXT_CLIENT_NAME': 55
'INNERTUBE_CONTEXT_CLIENT_NAME': 55,
'REQUIRE_JS_PLAYER': False
},
'android_music': {
'INNERTUBE_API_KEY': 'AIzaSyC9XL3ZjWddXya6X74dJoCTL-WEYFDNX30',
@ -138,6 +140,7 @@ INNERTUBE_CLIENTS = {
}
},
'INNERTUBE_CONTEXT_CLIENT_NAME': 21,
'REQUIRE_JS_PLAYER': False
},
'android_creator': {
'INNERTUBE_CONTEXT': {
@ -146,7 +149,8 @@ INNERTUBE_CLIENTS = {
'clientVersion': '21.24.100',
},
},
'INNERTUBE_CONTEXT_CLIENT_NAME': 14
'INNERTUBE_CONTEXT_CLIENT_NAME': 14,
'REQUIRE_JS_PLAYER': False
},
# ios has HLS live streams
# See: https://github.com/TeamNewPipe/NewPipeExtractor/issues/680
@ -158,7 +162,8 @@ INNERTUBE_CLIENTS = {
'clientVersion': '16.20',
}
},
'INNERTUBE_CONTEXT_CLIENT_NAME': 5
'INNERTUBE_CONTEXT_CLIENT_NAME': 5,
'REQUIRE_JS_PLAYER': False
},
'ios_embedded': {
'INNERTUBE_API_KEY': 'AIzaSyDCU8hByM-4DrUqRUYnGn-3llEO78bcxq8',
@ -168,7 +173,8 @@ INNERTUBE_CLIENTS = {
'clientVersion': '16.20',
},
},
'INNERTUBE_CONTEXT_CLIENT_NAME': 66
'INNERTUBE_CONTEXT_CLIENT_NAME': 66,
'REQUIRE_JS_PLAYER': False
},
'ios_music': {
'INNERTUBE_API_KEY': 'AIzaSyDK3iBpDP9nHVTk2qL73FLJICfOC3c51Og',
@ -179,7 +185,8 @@ INNERTUBE_CLIENTS = {
'clientVersion': '4.32',
},
},
'INNERTUBE_CONTEXT_CLIENT_NAME': 26
'INNERTUBE_CONTEXT_CLIENT_NAME': 26,
'REQUIRE_JS_PLAYER': False
},
'ios_creator': {
'INNERTUBE_CONTEXT': {
@ -188,7 +195,8 @@ INNERTUBE_CLIENTS = {
'clientVersion': '21.24.100',
},
},
'INNERTUBE_CONTEXT_CLIENT_NAME': 15
'INNERTUBE_CONTEXT_CLIENT_NAME': 15,
'REQUIRE_JS_PLAYER': False
},
# mweb has 'ultralow' formats
# See: https://github.com/yt-dlp/yt-dlp/pull/557
@ -215,6 +223,7 @@ def build_innertube_clients():
for client, ytcfg in tuple(INNERTUBE_CLIENTS.items()):
ytcfg.setdefault('INNERTUBE_API_KEY', 'AIzaSyDCU8hByM-4DrUqRUYnGn-3llEO78bcxq8')
ytcfg.setdefault('INNERTUBE_HOST', 'www.youtube.com')
ytcfg.setdefault('REQUIRE_JS_PLAYER', True)
ytcfg['INNERTUBE_CONTEXT']['client'].setdefault('hl', 'en')
ytcfg['priority'] = 10 * priority(client.split('_', 1)[0])
@ -1858,14 +1867,12 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
self._code_cache = {}
self._player_cache = {}
def _extract_player_url(self, ytcfg=None, webpage=None):
player_url = try_get(ytcfg, (lambda x: x['PLAYER_JS_URL']), str)
if not player_url and webpage:
player_url = self._search_regex(
r'"(?:PLAYER_JS_URL|jsUrl)"\s*:\s*"([^"]+)"',
webpage, 'player URL', fatal=False)
def _extract_player_url(self, *ytcfgs, webpage=None):
player_url = traverse_obj(
ytcfgs, (..., 'PLAYER_JS_URL'), (..., 'WEB_PLAYER_CONTEXT_CONFIGS', ..., 'jsUrl'),
get_all=False, expected_type=compat_str)
if not player_url:
return None
return
if player_url.startswith('//'):
player_url = 'https:' + player_url
elif not re.match(r'https?://', player_url):
@ -1873,6 +1880,16 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
'https://www.youtube.com', player_url)
return player_url
def _download_player_url(self, video_id, fatal=False):
res = self._download_webpage(
'https://www.youtube.com/iframe_api',
note='Downloading iframe API JS', video_id=video_id, fatal=fatal)
if res:
player_version = self._search_regex(
r'player\\?/([0-9a-fA-F]{8})\\?/', res, 'player version', fatal=fatal)
if player_version:
return f'https://www.youtube.com/s/player/{player_version}/player_ias.vflset/en_US/base.js'
def _signature_cache_id(self, example_sig):
""" Return a string representation of a signature """
return '.'.join(compat_str(len(part)) for part in example_sig.split('.'))
@ -2462,7 +2479,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
session_index = self._extract_session_index(player_ytcfg, master_ytcfg)
syncid = self._extract_account_syncid(player_ytcfg, master_ytcfg, initial_pr)
sts = self._extract_signature_timestamp(video_id, player_url, master_ytcfg, fatal=False)
sts = self._extract_signature_timestamp(video_id, player_url, master_ytcfg, fatal=False) if player_url else None
headers = self.generate_api_headers(
player_ytcfg, identity_token, syncid,
default_client=client, session_index=session_index)
@ -2507,7 +2524,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
webpage = self._download_webpage(url, video_id, fatal=False, note=f'Downloading {client} config')
return self.extract_ytcfg(video_id, webpage) or {}
def _extract_player_responses(self, clients, video_id, webpage, master_ytcfg, player_url, identity_token):
def _extract_player_responses(self, clients, video_id, webpage, master_ytcfg, identity_token):
initial_pr = None
if webpage:
initial_pr = self._extract_yt_initial_variable(
@ -2516,6 +2533,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
original_clients = clients
clients = clients[::-1]
prs = []
def append_client(client_name):
if client_name in INNERTUBE_CLIENTS and client_name not in original_clients:
@ -2525,23 +2543,33 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
# extraction of some data. So we return the initial_pr with formats
# stripped out even if not requested by the user
# See: https://github.com/yt-dlp/yt-dlp/issues/501
yielded_pr = False
if initial_pr:
pr = dict(initial_pr)
pr['streamingData'] = None
yielded_pr = True
yield pr
prs.append(pr)
last_error = None
tried_iframe_fallback = False
player_url = None
while clients:
client = clients.pop()
player_ytcfg = master_ytcfg if client == 'web' else {}
if 'configs' not in self._configuration_arg('player_skip'):
player_ytcfg = self._extract_player_ytcfg(client, video_id) or player_ytcfg
player_url = player_url or self._extract_player_url(master_ytcfg, player_ytcfg, webpage=webpage)
require_js_player = self._get_default_ytcfg(client).get('REQUIRE_JS_PLAYER')
if 'js' in self._configuration_arg('player_skip'):
require_js_player = False
player_url = None
if not player_url and not tried_iframe_fallback and require_js_player:
player_url = self._download_player_url(video_id)
tried_iframe_fallback = True
try:
pr = initial_pr if client == 'web' and initial_pr else self._extract_player_response(
client, video_id, player_ytcfg or master_ytcfg, player_ytcfg, identity_token, player_url, initial_pr)
client, video_id, player_ytcfg or master_ytcfg, player_ytcfg, identity_token, player_url if require_js_player else None, initial_pr)
except ExtractorError as e:
if last_error:
self.report_warning(last_error)
@ -2549,8 +2577,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
continue
if pr:
yielded_pr = True
yield pr
prs.append(pr)
# creator clients can bypass AGE_VERIFICATION_REQUIRED if logged in
if client.endswith('_agegate') and self._is_unplayable(pr) and self._generate_sapisidhash_header():
@ -2559,9 +2586,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
append_client(f'{client}_agegate')
if last_error:
if not yielded_pr:
if not len(prs):
raise last_error
self.report_warning(last_error)
return prs, player_url
def _extract_formats(self, streaming_data, video_id, player_url, is_live):
itags, stream_ids = [], []
@ -2708,16 +2736,17 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
base_url = self.http_scheme() + '//www.youtube.com/'
webpage_url = base_url + 'watch?v=' + video_id
webpage = self._download_webpage(
webpage_url + '&bpctr=9999999999&has_verified=1', video_id, fatal=False)
webpage = None
if 'webpage' not in self._configuration_arg('player_skip'):
webpage = self._download_webpage(
webpage_url + '&bpctr=9999999999&has_verified=1', video_id, fatal=False)
master_ytcfg = self.extract_ytcfg(video_id, webpage) or self._get_default_ytcfg()
player_url = self._extract_player_url(master_ytcfg, webpage)
identity_token = self._extract_identity_token(webpage, video_id)
player_responses = list(self._extract_player_responses(
player_responses, player_url = self._extract_player_responses(
self._get_requested_clients(url, smuggled_data),
video_id, webpage, master_ytcfg, player_url, identity_token))
video_id, webpage, master_ytcfg, identity_token)
get_first = lambda obj, keys, **kwargs: traverse_obj(obj, (..., *variadic(keys)), **kwargs, get_all=False)

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