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Add preset alias help output

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Simon Sawicki 2025-04-06 16:24:48 +02:00
parent afa79173cd
commit f93fdcbc06
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1 changed files with 28 additions and 11 deletions
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39
yt_dlp/options.py
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@ -150,6 +150,15 @@ class _YoutubeDLHelpFormatter(optparse.IndentedHelpFormatter):
return opts
_PRESET_ALIASES = {
'mp3': ['-f', 'ba[acodec=mp3]/ba/b', '-x', '--audio-format', 'mp3'],
'aac': ['-f', 'ba[acodec*=aac]/ba[acodec^=mp4a.40.]/ba/b', '-x', '--audio-format', 'aac'],
'mp4': ['--merge-output-format', 'mp4', '--remux', 'mp4', '-S', 'vcodec:h264,lang,quality,res,fps,hdr:12,acodec:aac'],
'mkv': ['--merge-output-format', 'mkv', '--remux', 'mkv'],
'embed': ['--embed-subs', '--embed-thumbnail', '--embed-metadata'],
}
class _YoutubeDLOptionParser(optparse.OptionParser):
# optparse is deprecated since Python 3.2. So assume a stable interface even for private methods
ALIAS_DEST = '_triggered_aliases'
@ -215,6 +224,21 @@ class _YoutubeDLOptionParser(optparse.OptionParser):
return e.possibilities[0]
raise
def format_option_help(self, formatter=None):
assert formatter, ''
formatted_help = super().format_option_help(formatter=formatter)
formatter.indent()
heading = formatter.format_heading('Preset aliases')
formatter.indent()
result = []
for name, args in _PRESET_ALIASES.items():
option = optparse.Option('-t', help=shlex.join(args))
formatter.option_strings[option] = f'-t {name}'
result.append(formatter.format_option(option))
formatter.dedent()
formatter.dedent()
return f'{formatted_help}\n{heading}{"\n".join(result)}'
def create_parser():
def _list_from_options_callback(option, opt_str, value, parser, append=True, delim=',', process=str.strip):
@ -317,20 +341,12 @@ def create_parser():
parser.rargs[:0] = shlex.split(
opts if value is None else opts.format(*map(shlex.quote, value)))
PRESET_ALIASES = {
'mp3': ['-f', 'ba[acodec=mp3]/ba/b', '-x', '--audio-format', 'mp3'],
'aac': ['-f', 'ba[acodec*=aac]/ba[acodec^=mp4a.40.]/ba/b', '-x', '--audio-format', 'aac'],
'mp4': ['--merge-output-format', 'mp4', '--remux', 'mp4', '-S', 'vcodec:h264,lang,quality,res,fps,hdr:12,acodec:aac'],
'mkv': ['--merge-output-format', 'mkv', '--remux', 'mkv'],
'embed': ['--embed-subs', '--embed-thumbnail', '--embed-metadata'],
}
def _preset_alias_callback(option, opt_str, value, parser):
if not value:
return
if value not in PRESET_ALIASES:
if value not in _PRESET_ALIASES:
raise optparse.OptionValueError(f'Unknown preset alias: {value}')
parser.rargs[:0] = PRESET_ALIASES[value]
parser.rargs[:0] = _PRESET_ALIASES[value]
general = optparse.OptionGroup(parser, 'General Options')
general.add_option(
@ -539,7 +555,8 @@ def create_parser():
action='callback', callback=_preset_alias_callback,
help=(
'Applies a predefined preset. e.g. --preset-alias mp3. '
f'The following presets are available: {", ".join(PRESET_ALIASES)}. '
f'The following presets are available: {", ".join(_PRESET_ALIASES)}. '
'See the "Preset aliases" section at the end for more infos. '
'This option can be used multiple times.'))
network = optparse.OptionGroup(parser, 'Network Options')