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[core] Allow extractors to mark formats as potentially DRM (#7396)

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This is useful for HLS where detecting whether the format is
actually DRM requires the child manifest to be downloaded.

Makes the error message when using `--test` inconsistent,
but doesn't really matter.
This commit is contained in:
pukkandan 2023-07-06 18:39:50 +05:30
parent 906c0bdcd8
commit bc344cd456
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GPG Key ID: 7EEE9E1E817D0A39
3 changed files with 46 additions and 31 deletions
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37
yt_dlp/YoutubeDL.py
View File

@ -983,6 +983,7 @@ def trouble(self, message=None, tb=None, is_error=True):
ID='green',
DELIM='blue',
ERROR='red',
BAD_FORMAT='light red',
WARNING='yellow',
SUPPRESS='light black',
)
@ -2085,8 +2086,6 @@ def syntax_error(note, start):
allow_multiple_streams = {'audio': self.params.get('allow_multiple_audio_streams', False),
'video': self.params.get('allow_multiple_video_streams', False)}
check_formats = self.params.get('check_formats') == 'selected'
def _parse_filter(tokens):
filter_parts = []
for type, string_, start, _, _ in tokens:
@ -2259,10 +2258,19 @@ def _merge(formats_pair):
return new_dict
def _check_formats(formats):
if not check_formats:
if (self.params.get('check_formats') is not None
or self.params.get('allow_unplayable_formats')):
yield from formats
return
yield from self._check_formats(formats)
elif self.params.get('check_formats') == 'selected':
yield from self._check_formats(formats)
return
for f in formats:
if f.get('has_drm'):
yield from self._check_formats([f])
else:
yield f
def _build_selector_function(selector):
if isinstance(selector, list): # ,
@ -2614,10 +2622,10 @@ def sanitize_numeric_fields(info):
if field_preference:
info_dict['_format_sort_fields'] = field_preference
# or None ensures --clean-infojson removes it
info_dict['_has_drm'] = any(f.get('has_drm') for f in formats) or None
info_dict['_has_drm'] = any( # or None ensures --clean-infojson removes it
f.get('has_drm') and f['has_drm'] != 'maybe' for f in formats) or None
if not self.params.get('allow_unplayable_formats'):
formats = [f for f in formats if not f.get('has_drm')]
formats = [f for f in formats if not f.get('has_drm') or f['has_drm'] == 'maybe']
if formats and all(f.get('acodec') == f.get('vcodec') == 'none' for f in formats):
self.report_warning(
@ -3719,14 +3727,13 @@ def simplified_codec(f, field):
simplified_codec(f, 'acodec'),
format_field(f, 'abr', '\t%dk', func=round),
format_field(f, 'asr', '\t%s', func=format_decimal_suffix),
join_nonempty(
self._format_out('UNSUPPORTED', 'light red') if f.get('ext') in ('f4f', 'f4m') else None,
self._format_out('DRM', 'light red') if f.get('has_drm') else None,
format_field(f, 'language', '[%s]'),
join_nonempty(format_field(f, 'format_note'),
format_field(f, 'container', ignore=(None, f.get('ext'))),
delim=', '),
delim=' '),
join_nonempty(format_field(f, 'language', '[%s]'), join_nonempty(
self._format_out('UNSUPPORTED', self.Styles.BAD_FORMAT) if f.get('ext') in ('f4f', 'f4m') else None,
(self._format_out('Maybe DRM', self.Styles.WARNING) if f.get('has_drm') == 'maybe'
else self._format_out('DRM', self.Styles.BAD_FORMAT) if f.get('has_drm') else None),
format_field(f, 'format_note'),
format_field(f, 'container', ignore=(None, f.get('ext'))),
delim=', '), delim=' '),
] for f in formats if f.get('preference') is None or f['preference'] >= -1000]
header_line = self._list_format_headers(
'ID', 'EXT', 'RESOLUTION', '\tFPS', 'HDR', 'CH', delim, '\tFILESIZE', '\tTBR', 'PROTO',

30
yt_dlp/downloader/hls.py
View File

@ -28,7 +28,16 @@ class HlsFD(FragmentFD):
FD_NAME = 'hlsnative'
@staticmethod
def can_download(manifest, info_dict, allow_unplayable_formats=False):
def _has_drm(manifest): # TODO: https://github.com/yt-dlp/yt-dlp/pull/5039
return bool(re.search('|'.join((
r'#EXT-X-(?:SESSION-)?KEY:.*?URI="skd://', # Apple FairPlay
r'#EXT-X-(?:SESSION-)?KEY:.*?KEYFORMAT="com\.apple\.streamingkeydelivery"', # Apple FairPlay
r'#EXT-X-(?:SESSION-)?KEY:.*?KEYFORMAT="com\.microsoft\.playready"', # Microsoft PlayReady
r'#EXT-X-FAXS-CM:', # Adobe Flash Access
)), manifest))
@classmethod
def can_download(cls, manifest, info_dict, allow_unplayable_formats=False):
UNSUPPORTED_FEATURES = [
# r'#EXT-X-BYTERANGE', # playlists composed of byte ranges of media files [2]
@ -50,13 +59,15 @@ def can_download(manifest, info_dict, allow_unplayable_formats=False):
]
if not allow_unplayable_formats:
UNSUPPORTED_FEATURES += [
r'#EXT-X-KEY:METHOD=(?!NONE|AES-128)', # encrypted streams [1]
r'#EXT-X-KEY:METHOD=(?!NONE|AES-128)', # encrypted streams [1], but not necessarily DRM
]
def check_results():
yield not info_dict.get('is_live')
for feature in UNSUPPORTED_FEATURES:
yield not re.search(feature, manifest)
if not allow_unplayable_formats:
yield not cls._has_drm(manifest)
return all(check_results())
def real_download(self, filename, info_dict):
@ -81,14 +92,13 @@ def real_download(self, filename, info_dict):
message = ('Live HLS streams are not supported by the native downloader. If this is a livestream, '
f'please {install_ffmpeg}add "--downloader ffmpeg --hls-use-mpegts" to your command')
if not can_download:
has_drm = re.search('|'.join([
r'#EXT-X-FAXS-CM:', # Adobe Flash Access
r'#EXT-X-(?:SESSION-)?KEY:.*?URI="skd://', # Apple FairPlay
]), s)
if has_drm and not self.params.get('allow_unplayable_formats'):
self.report_error(
'This video is DRM protected; Try selecting another format with --format or '
'add --check-formats to automatically fallback to the next best format')
if self._has_drm(s) and not self.params.get('allow_unplayable_formats'):
if info_dict.get('has_drm') and self.params.get('test'):
self.to_screen(f'[{self.FD_NAME}] This format is DRM protected', skip_eol=True)
else:
self.report_error(
'This format is DRM protected; Try selecting another format with --format or '
'add --check-formats to automatically fallback to the next best format', tb=False)
return False
message = message or 'Unsupported features have been detected'
fd = FFmpegFD(self.ydl, self.params)

10
yt_dlp/extractor/common.py
View File

@ -26,6 +26,7 @@
from ..compat import compat_etree_fromstring, compat_expanduser, compat_os_name
from ..cookies import LenientSimpleCookie
from ..downloader.f4m import get_base_url, remove_encrypted_media
from ..downloader.hls import HlsFD
from ..utils import (
IDENTITY,
JSON_LD_RE,
@ -224,7 +225,8 @@ class InfoExtractor:
width : height ratio as float.
* no_resume The server does not support resuming the
(HTTP or RTMP) download. Boolean.
* has_drm The format has DRM and cannot be downloaded. Boolean
* has_drm True if the format has DRM and cannot be downloaded.
'maybe' if the format may have DRM and has to be tested before download.
* extra_param_to_segment_url A query string to append to each
fragment's URL, or to update each existing query string
with. Only applied by the native HLS/DASH downloaders.
@ -1979,11 +1981,7 @@ def _parse_m3u8_formats_and_subtitles(
errnote=None, fatal=True, data=None, headers={}, query={},
video_id=None):
formats, subtitles = [], {}
has_drm = re.search('|'.join([
r'#EXT-X-FAXS-CM:', # Adobe Flash Access
r'#EXT-X-(?:SESSION-)?KEY:.*?URI="skd://', # Apple FairPlay
]), m3u8_doc)
has_drm = HlsFD._has_drm(m3u8_doc)
def format_url(url):
return url if re.match(r'^https?://', url) else urllib.parse.urljoin(m3u8_url, url)