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@ -144,6 +144,7 @@ ### Differences in default behavior
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* Some private fields such as filenames are removed by default from the infojson. Use `--no-clean-infojson` or `--compat-options no-clean-infojson` to revert this
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* When `--embed-subs` and `--write-subs` are used together, the subtitles are written to disk and also embedded in the media file. You can use just `--embed-subs` to embed the subs and automatically delete the separate file. See [#630 (comment)](https://github.com/yt-dlp/yt-dlp/issues/630#issuecomment-893659460) for more info. `--compat-options no-keep-subs` can be used to revert this
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* `certifi` will be used for SSL root certificates, if installed. If you want to use system certificates (e.g. self-signed), use `--compat-options no-certifi`
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* youtube-dl tries to remove some superfluous punctuations from filenames. While this can sometimes be helpfull, it is often undesirable. So yt-dlp tries to keep the fields in the filenames as close to their original values as possible. You can use `--compat-options filename-sanitization` to revert to youtube-dl's behavior
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For ease of use, a few more compat options are available:
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* `--compat-options all`: Use all compat options
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@ -160,10 +160,12 @@ def test_sanitize_filename(self):
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sanitize_filename('New World record at 0:12:34'),
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'New World record at 0_12_34')
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self.assertEqual(sanitize_filename('--gasdgf'), '_-gasdgf')
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self.assertEqual(sanitize_filename('--gasdgf'), '--gasdgf')
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self.assertEqual(sanitize_filename('--gasdgf', is_id=True), '--gasdgf')
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self.assertEqual(sanitize_filename('.gasdgf'), 'gasdgf')
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self.assertEqual(sanitize_filename('--gasdgf', is_id=False), '_-gasdgf')
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self.assertEqual(sanitize_filename('.gasdgf'), '.gasdgf')
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self.assertEqual(sanitize_filename('.gasdgf', is_id=True), '.gasdgf')
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self.assertEqual(sanitize_filename('.gasdgf', is_id=False), 'gasdgf')
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forbidden = '"\0\\/'
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for fc in forbidden:
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@ -87,6 +87,7 @@
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MaxDownloadsReached,
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merge_headers,
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network_exceptions,
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NO_DEFAULT,
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number_of_digits,
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orderedSet,
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OUTTMPL_TYPES,
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@ -1150,8 +1151,10 @@ def get_value(mdict):
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na = self.params.get('outtmpl_na_placeholder', 'NA')
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def filename_sanitizer(key, value, restricted=self.params.get('restrictfilenames')):
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return sanitize_filename(str(value), restricted=restricted,
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is_id=re.search(r'(^|[_.])id(\.|$)', key))
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return sanitize_filename(str(value), restricted=restricted, is_id=(
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bool(re.search(r'(^|[_.])id(\.|$)', key))
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if 'filename-sanitization' in self.params.get('compat_opts', [])
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else NO_DEFAULT))
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sanitizer = sanitize if callable(sanitize) else filename_sanitizer
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sanitize = bool(sanitize)
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@ -338,7 +338,7 @@ def _dict_from_options_callback(
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action='callback', callback=_set_from_options_callback,
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callback_kwargs={
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'allowed_values': {
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'filename', 'format-sort', 'abort-on-error', 'format-spec', 'no-playlist-metafiles',
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'filename', 'filename-sanitization', 'format-sort', 'abort-on-error', 'format-spec', 'no-playlist-metafiles',
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'multistreams', 'no-live-chat', 'playlist-index', 'list-formats', 'no-direct-merge',
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'no-youtube-channel-redirect', 'no-youtube-unavailable-videos', 'no-attach-info-json', 'embed-metadata',
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'embed-thumbnail-atomicparsley', 'seperate-video-versions', 'no-clean-infojson', 'no-keep-subs', 'no-certifi',
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@ -705,36 +705,40 @@ def timeconvert(timestr):
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return timestamp
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def sanitize_filename(s, restricted=False, is_id=False):
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def sanitize_filename(s, restricted=False, is_id=NO_DEFAULT):
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"""Sanitizes a string so it could be used as part of a filename.
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If restricted is set, use a stricter subset of allowed characters.
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Set is_id if this is not an arbitrary string, but an ID that should be kept
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if possible.
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@param restricted Use a stricter subset of allowed characters
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@param is_id Whether this is an ID that should be kept unchanged if possible.
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If unset, yt-dlp's new sanitization rules are in effect
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"""
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if s == '':
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return ''
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def replace_insane(char):
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if restricted and char in ACCENT_CHARS:
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return ACCENT_CHARS[char]
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elif not restricted and char == '\n':
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return ' '
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return '\0 '
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elif char == '?' or ord(char) < 32 or ord(char) == 127:
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return ''
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elif char == '"':
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return '' if restricted else '\''
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elif char == ':':
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return '_-' if restricted else ' -'
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return '\0_\0-' if restricted else '\0 \0-'
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elif char in '\\/|*<>':
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return '_'
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if restricted and (char in '!&\'()[]{}$;`^,#' or char.isspace()):
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return '_'
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if restricted and ord(char) > 127:
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return '_'
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return '\0_'
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if restricted and (char in '!&\'()[]{}$;`^,#' or char.isspace() or ord(char) > 127):
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return '\0_'
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return char
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if s == '':
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return ''
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# Handle timestamps
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s = re.sub(r'[0-9]+(?::[0-9]+)+', lambda m: m.group(0).replace(':', '_'), s)
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s = re.sub(r'[0-9]+(?::[0-9]+)+', lambda m: m.group(0).replace(':', '_'), s) # Handle timestamps
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result = ''.join(map(replace_insane, s))
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if is_id is NO_DEFAULT:
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result = re.sub('(\0.)(?:(?=\\1)..)+', r'\1', result) # Remove repeated substitute chars
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STRIP_RE = '(?:\0.|[ _-])*'
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result = re.sub(f'^\0.{STRIP_RE}|{STRIP_RE}\0.$', '', result) # Remove substitute chars from start/end
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result = result.replace('\0', '') or '_'
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if not is_id:
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while '__' in result:
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result = result.replace('__', '_')
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