from .downloader.external import list_external_downloaders
from .postprocessor import (
FFmpegExtractAudioPP,
+ FFmpegMergerPP,
FFmpegSubtitlesConvertorPP,
FFmpegThumbnailsConvertorPP,
FFmpegVideoRemuxerPP,
SponsorBlockPP,
)
from .postprocessor.modify_chapters import DEFAULT_SPONSORBLOCK_CHAPTER_TITLE
-from .update import detect_variant
+from .update import detect_variant, is_non_updateable
from .utils import (
OUTTMPL_TYPES,
POSTPROCESS_WHEN,
Config,
expand_path,
+ format_field,
get_executable_path,
join_nonempty,
remove_end,
if root.parse_known_args()[0].ignoreconfig:
return False
# Multiple package names can be given here
- # Eg: ('yt-dlp', 'youtube-dlc', 'youtube-dl') will look for
+ # E.g. ('yt-dlp', 'youtube-dlc', 'youtube-dl') will look for
# the configuration file of any of these three packages
for package in ('yt-dlp',):
if user:
general.add_option(
'-U', '--update',
action='store_true', dest='update_self',
- help='Update this program to latest version')
+ help=format_field(
+ is_non_updateable(), None, 'Check if updates are available. %s',
+ default='Update this program to the latest version'))
general.add_option(
'--no-update',
action='store_false', dest='update_self',
- help='Do not update (default)')
+ help='Do not check for updates (default)')
general.add_option(
'-i', '--ignore-errors',
action='store_true', dest='ignoreerrors',
dest='default_search', metavar='PREFIX',
help=(
'Use this prefix for unqualified URLs. '
- 'Eg: "gvsearch2:python" downloads two videos from google videos for the search term "python". '
+ 'E.g. "gvsearch2:python" downloads two videos from google videos for the search term "python". '
'Use the value "auto" to let yt-dlp guess ("auto_warning" to emit a warning when guessing). '
'"error" just throws an error. The default value "fixup_error" repairs broken URLs, '
'but emits an error if this is not possible instead of searching'))
help=(
'Create aliases for an option string. Unless an alias starts with a dash "-", it is prefixed with "--". '
'Arguments are parsed according to the Python string formatting mini-language. '
- 'Eg: --alias get-audio,-X "-S=aext:{0},abr -x --audio-format {0}" creates options '
+ 'E.g. --alias get-audio,-X "-S=aext:{0},abr -x --audio-format {0}" creates options '
'"--get-audio" and "-X" that takes an argument (ARG0) and expands to '
'"-S=aext:ARG0,abr -x --audio-format ARG0". All defined aliases are listed in the --help output. '
'Alias options can trigger more aliases; so be careful to avoid defining recursive options. '
'--proxy', dest='proxy',
default=None, metavar='URL',
help=(
- 'Use the specified HTTP/HTTPS/SOCKS proxy. To enable SOCKS proxy, specify a proper scheme. '
- 'Eg: socks5://user:pass@127.0.0.1:1080/. Pass in an empty string (--proxy "") for direct connection'))
+ 'Use the specified HTTP/HTTPS/SOCKS proxy. To enable SOCKS proxy, specify a proper scheme, '
+ 'e.g. socks5://user:pass@127.0.0.1:1080/. Pass in an empty string (--proxy "") for direct connection'))
network.add_option(
'--socket-timeout',
dest='socket_timeout', type=float, default=None, metavar='SECONDS',
'Comma separated playlist_index of the videos to download. '
'You can specify a range using "[START]:[STOP][:STEP]". For backward compatibility, START-STOP is also supported. '
'Use negative indices to count from the right and negative STEP to download in reverse order. '
- 'Eg: "-I 1:3,7,-5::2" used on a playlist of size 15 will download the videos at index 1,2,3,7,11,13,15'))
+ 'E.g. "-I 1:3,7,-5::2" used on a playlist of size 15 will download the videos at index 1,2,3,7,11,13,15'))
selection.add_option(
'--match-title',
dest='matchtitle', metavar='REGEX',
selection.add_option(
'--min-filesize',
metavar='SIZE', dest='min_filesize', default=None,
- help='Do not download any videos smaller than SIZE (e.g. 50k or 44.6m)')
+ help='Do not download any videos smaller than SIZE, e.g. 50k or 44.6M')
selection.add_option(
'--max-filesize',
metavar='SIZE', dest='max_filesize', default=None,
- help='Do not download any videos larger than SIZE (e.g. 50k or 44.6m)')
+ help='Do not download any videos larger than SIZE, e.g. 50k or 44.6M')
selection.add_option(
'--date',
metavar='DATE', dest='date', default=None,
help=(
'Download only videos uploaded on this date. The date can be "YYYYMMDD" or in the format '
- '[now|today|yesterday][-N[day|week|month|year]]. Eg: --date today-2weeks'))
+ '[now|today|yesterday][-N[day|week|month|year]]. E.g. --date today-2weeks'))
selection.add_option(
'--datebefore',
metavar='DATE', dest='datebefore', default=None,
metavar='FILTER', dest='match_filter', action='append',
help=(
'Generic video filter. Any "OUTPUT TEMPLATE" field can be compared with a '
- 'number or a string using the operators defined in "Filtering formats". '
+ 'number or a string using the operators defined in "Filtering Formats". '
'You can also simply specify a field to match if the field is present, '
'use "!field" to check if the field is not present, and "&" to check multiple conditions. '
'Use a "\\" to escape "&" or quotes if needed. If used multiple times, '
- 'the filter matches if atleast one of the conditions are met. Eg: --match-filter '
+ 'the filter matches if atleast one of the conditions are met. E.g. --match-filter '
'!is_live --match-filter "like_count>?100 & description~=\'(?i)\\bcats \\& dogs\\b\'" '
'matches only videos that are not live OR those that have a like count more than 100 '
'(or the like field is not available) and also has a description '
'--merge-output-format',
action='store', dest='merge_output_format', metavar='FORMAT', default=None,
help=(
- 'If a merge is required (e.g. bestvideo+bestaudio), '
- 'output to given container format. One of mkv, mp4, ogg, webm, flv. '
- 'Ignored if no merge is required'))
+ 'Containers that may be used when merging formats, separated by "/", e.g. "mp4/mkv". '
+ 'Ignored if no merge is required. '
+ f'(currently supported: {", ".join(sorted(FFmpegMergerPP.SUPPORTED_EXTS))})'))
video_format.add_option(
'--allow-unplayable-formats',
action='store_true', dest='allow_unplayable_formats', default=False,
subtitles.add_option(
'--sub-format',
action='store', dest='subtitlesformat', metavar='FORMAT', default='best',
- help='Subtitle format; accepts formats preference, Eg: "srt" or "ass/srt/best"')
+ help='Subtitle format; accepts formats preference, e.g. "srt" or "ass/srt/best"')
subtitles.add_option(
'--sub-langs', '--srt-langs',
action='callback', dest='subtitleslangs', metavar='LANGS', type='str',
default=[], callback=_list_from_options_callback,
help=(
- 'Languages of the subtitles to download (can be regex) or "all" separated by commas. (Eg: --sub-langs "en.*,ja") '
- 'You can prefix the language code with a "-" to exclude it from the requested languages. (Eg: --sub-langs all,-live_chat) '
+ 'Languages of the subtitles to download (can be regex) or "all" separated by commas, e.g. --sub-langs "en.*,ja". '
+ 'You can prefix the language code with a "-" to exclude it from the requested languages, e.g. --sub-langs all,-live_chat. '
'Use --list-subs for a list of available language tags'))
downloader = optparse.OptionGroup(parser, 'Download Options')
downloader.add_option(
'-r', '--limit-rate', '--rate-limit',
dest='ratelimit', metavar='RATE',
- help='Maximum download rate in bytes per second (e.g. 50K or 4.2M)')
+ help='Maximum download rate in bytes per second, e.g. 50K or 4.2M')
downloader.add_option(
'--throttled-rate',
dest='throttledratelimit', metavar='RATE',
- help='Minimum download rate in bytes per second below which throttling is assumed and the video data is re-extracted (e.g. 100K)')
+ help='Minimum download rate in bytes per second below which throttling is assumed and the video data is re-extracted, e.g. 100K')
downloader.add_option(
'-R', '--retries',
dest='retries', metavar='RETRIES', default=10,
dest='retry_sleep', metavar='[TYPE:]EXPR', default={}, type='str',
action='callback', callback=_dict_from_options_callback,
callback_kwargs={
- 'allowed_keys': 'http|fragment|file_access',
+ 'allowed_keys': 'http|fragment|file_access|extractor',
'default_key': 'http',
}, help=(
- 'An expression for the time to sleep between retries in seconds (optionally) prefixed '
- 'by the type of retry (file_access, fragment, http (default)) to apply the sleep to. '
+ 'Time to sleep between retries in seconds (optionally) prefixed by the type of retry '
+ '(http (default), fragment, file_access, extractor) to apply the sleep to. '
'EXPR can be a number, linear=START[:END[:STEP=1]] or exp=START[:END[:BASE=2]]. '
- 'This option can be used multiple times to set the sleep for the different retry types. '
- 'Eg: --retry-sleep linear=1::2 --retry-sleep fragment:exp=1:20'))
+ 'This option can be used multiple times to set the sleep for the different retry types, '
+ 'e.g. --retry-sleep linear=1::2 --retry-sleep fragment:exp=1:20'))
downloader.add_option(
'--skip-unavailable-fragments', '--no-abort-on-unavailable-fragment',
action='store_true', dest='skip_unavailable_fragments', default=True,
downloader.add_option(
'--buffer-size',
dest='buffersize', metavar='SIZE', default='1024',
- help='Size of download buffer (e.g. 1024 or 16K) (default is %default)')
+ help='Size of download buffer, e.g. 1024 or 16K (default is %default)')
downloader.add_option(
'--resize-buffer',
action='store_false', dest='noresizebuffer',
'--http-chunk-size',
dest='http_chunk_size', metavar='SIZE', default=None,
help=(
- 'Size of a chunk for chunk-based HTTP downloading (e.g. 10485760 or 10M) (default is disabled). '
+ 'Size of a chunk for chunk-based HTTP downloading, e.g. 10485760 or 10M (default is disabled). '
'May be useful for bypassing bandwidth throttling imposed by a webserver (experimental)'))
downloader.add_option(
'--test',
help=(
'Download only chapters whose title matches the given regular expression. '
'Time ranges prefixed by a "*" can also be used in place of chapters to download the specified range. '
- 'Eg: --download-sections "*10:15-15:00" --download-sections "intro". '
- 'Needs ffmpeg. This option can be used multiple times to download multiple sections'))
+ 'Needs ffmpeg. This option can be used multiple times to download multiple sections, '
+ 'e.g. --download-sections "*10:15-15:00" --download-sections "intro"'))
downloader.add_option(
'--downloader', '--external-downloader',
dest='external_downloader', metavar='[PROTO:]NAME', default={}, type='str',
}, help=(
'Name or path of the external downloader to use (optionally) prefixed by '
'the protocols (http, ftp, m3u8, dash, rstp, rtmp, mms) to use it for. '
- f'Currently supports native, {", ".join(list_external_downloaders())}. '
+ f'Currently supports native, {", ".join(sorted(list_external_downloaders()))}. '
'You can use this option multiple times to set different downloaders for different protocols. '
- 'For example, --downloader aria2c --downloader "dash,m3u8:native" will use '
+ 'E.g. --downloader aria2c --downloader "dash,m3u8:native" will use '
'aria2c for http/ftp downloads, and the native downloader for dash/m3u8 downloads '
'(Alias: --external-downloader)'))
downloader.add_option(
'Template for progress outputs, optionally prefixed with one of "download:" (default), '
'"download-title:" (the console title), "postprocess:", or "postprocess-title:". '
'The video\'s fields are accessible under the "info" key and '
- 'the progress attributes are accessible under "progress" key. E.g.: '
+ 'the progress attributes are accessible under "progress" key. E.g. '
# TODO: Document the fields inside "progress"
'--console-title --progress-template "download-title:%(info.id)s-%(progress.eta)s"'))
verbosity.add_option(
'--audio-format', metavar='FORMAT', dest='audioformat', default='best',
help=(
'Format to convert the audio to when -x is used. '
- f'(currently supported: best (default), {", ".join(FFmpegExtractAudioPP.SUPPORTED_EXTS)}). '
+ f'(currently supported: best (default), {", ".join(sorted(FFmpegExtractAudioPP.SUPPORTED_EXTS))}). '
'You can specify multiple rules using similar syntax as --remux-video'))
postproc.add_option(
'--audio-quality', metavar='QUALITY',
'Remux the video into another container if necessary '
f'(currently supported: {", ".join(FFmpegVideoRemuxerPP.SUPPORTED_EXTS)}). '
'If target container does not support the video/audio codec, remuxing will fail. You can specify multiple rules; '
- 'Eg. "aac>m4a/mov>mp4/mkv" will remux aac to m4a, mov to mp4 and anything else to mkv'))
+ 'e.g. "aac>m4a/mov>mp4/mkv" will remux aac to m4a, mov to mp4 and anything else to mkv'))
postproc.add_option(
'--recode-video',
metavar='FORMAT', dest='recodevideo', default=None,
'You can also specify "PP+EXE:ARGS" to give the arguments to the specified executable '
'only when being used by the specified postprocessor. Additionally, for ffmpeg/ffprobe, '
'"_i"/"_o" can be appended to the prefix optionally followed by a number to pass the argument '
- 'before the specified input/output file. Eg: --ppa "Merger+ffmpeg_i1:-v quiet". '
+ 'before the specified input/output file, e.g. --ppa "Merger+ffmpeg_i1:-v quiet". '
'You can use this option multiple times to give different arguments to different '
'postprocessors. (Alias: --ppa)'))
postproc.add_option(
metavar='FORMAT', dest='convertsubtitles', default=None,
help=(
'Convert the subtitles to another format (currently supported: %s) '
- '(Alias: --convert-subtitles)' % ', '.join(FFmpegSubtitlesConvertorPP.SUPPORTED_EXTS)))
+ '(Alias: --convert-subtitles)' % ', '.join(sorted(FFmpegSubtitlesConvertorPP.SUPPORTED_EXTS))))
postproc.add_option(
'--convert-thumbnails',
metavar='FORMAT', dest='convertthumbnails', default=None,
help=(
'Convert the thumbnails to another format '
- f'(currently supported: {", ".join(FFmpegThumbnailsConvertorPP.SUPPORTED_EXTS)}). '
+ f'(currently supported: {", ".join(sorted(FFmpegThumbnailsConvertorPP.SUPPORTED_EXTS))}). '
'You can specify multiple rules using similar syntax as --remux-video'))
postproc.add_option(
'--split-chapters', '--split-tracks',
'SponsorBlock categories to create chapters for, separated by commas. '
f'Available categories are {", ".join(SponsorBlockPP.CATEGORIES.keys())}, all and default (=all). '
'You can prefix the category with a "-" to exclude it. See [1] for description of the categories. '
- 'Eg: --sponsorblock-mark all,-preview [1] https://wiki.sponsor.ajay.app/w/Segment_Categories'))
+ 'E.g. --sponsorblock-mark all,-preview [1] https://wiki.sponsor.ajay.app/w/Segment_Categories'))
sponsorblock.add_option(
'--sponsorblock-remove', metavar='CATS',
dest='sponsorblock_remove', default=set(), action='callback', type='str',
projects / yt-dlp.git / blobdiff