How to use

To run Williamyapdownloadyoutube.exe only need open DOS Shell.

Williamyapdownloadyoutube [OPTIONS] URL [URL...]

OPTIONS

-i, --ignore-errors              Continue on download errors, for example to
                                 skip unavailable videos in a playlist
--abort-on-error                 Abort downloading of further videos (in the
                                 playlist or the command line) if an error
                                 occurs
--dump-user-agent                Display the current browser identification
--list-extractors                List all supported extractors
--extractor-descriptions         Output descriptions of all supported
                                 extractors
--force-generic-extractor        Force extraction to use the generic
                                 extractor
--default-search PREFIX          Use this prefix for unqualified URLs. For
                                 example "gvsearch2:" downloads two videos
                                 from google videos for Williamyapdownloadyoutube "large
                                 apple". Use the value "auto" to let
                                 Williamyapdownloadyoutube 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.
--ignore-config                  Do not read configuration files. When given
                                 in the global configuration file
                                 /etc/Williamyapdownloadyoutube.conf: Do not read the user
                                 configuration in ~/.config/youtube-
                                 dl/config (%APPDATA%/Williamyapdownloadyoutube/config.txt
                                 on Windows)
--flat-playlist                  Do not extract the videos of a playlist,
                                 only list them.
--mark-watched                   Mark videos watched (YouTube only)
--no-mark-watched                Do not mark videos watched (YouTube only)
--no-color                       Do not emit color codes in output
--abort-on-unavailable-fragment  Abort downloading when some fragment is not
                                 available

Post-processing Options:

-x, --extract-audio              Convert video files to audio-only files
                                 (requires ffmpeg or avconv and ffprobe or
                                 avprobe)
--audio-format FORMAT            Specify audio format: "best", "aac",
                                 "vorbis", "mp3", "m4a", "opus", or "wav";
                                 "best" by default
--audio-quality QUALITY          Specify ffmpeg/avconv audio quality, insert
                                 a value between 0 (better) and 9 (worse)
                                 for VBR or a specific bitrate like 128K
                                 (default 5)
--recode-video FORMAT            Encode the video to another format if
                                 necessary (currently supported:
                                 mp4|flv|ogg|webm|mkv|avi)
--postprocessor-args ARGS        Give these arguments to the postprocessor
-k, --keep-video                 Keep the video file on disk after the post-
                                 processing; the video is erased by default
--no-post-overwrites             Do not overwrite post-processed files; the
                                 post-processed files are overwritten by
                                 default
--embed-subs                     Embed subtitles in the video (only for mp4,
                                 webm and mkv videos)
--embed-thumbnail                Embed thumbnail in the audio as cover art
--add-metadata                   Write metadata to the video file
--metadata-from-title FORMAT     Parse additional metadata like song title /
                                 artist from the video title. The format
                                 syntax is the same as --output, the parsed
                                 parameters replace existing values.
                                 Additional templates: %(album)s,
                                 %(artist)s. Example: --metadata-from-title
                                 "%(artist)s - %(title)s" matches a title
                                 like "Coldplay - Paradise"
--xattrs                         Write metadata to the video file's xattrs
                                 (using dublin core and xdg standards)
--fixup POLICY                   Automatically correct known faults of the
                                 file. One of never (do nothing), warn (only
                                 emit a warning), detect_or_warn (the
                                 default; fix file if we can, warn
                                 otherwise)
--prefer-avconv                  Prefer avconv over ffmpeg for running the
                                 postprocessors (default)
--prefer-ffmpeg                  Prefer ffmpeg over avconv for running the
                                 postprocessors
--ffmpeg-location PATH           Location of the ffmpeg/avconv binary;
                                 either the path to the binary or its
                                 containing directory.
--exec CMD                       Execute a command on the file after
                                 downloading, similar to find's -exec
                                 syntax. Example: --exec 'adb push {}
                                 /sdcard/Music/ && rm {}'
--convert-subs FORMAT            Convert the subtitles to other format
                                 (currently supported: srt|ass|vtt)

Network Options:

--proxy URL                      Use the specified HTTP/HTTPS/SOCKS proxy.
                                 To enable experimental SOCKS proxy, specify
                                 a proper scheme. For example
                                 socks5://127.0.0.1:1080/. Pass in an empty
                                 string (--proxy "") for direct connection
--socket-timeout SECONDS         Time to wait before giving up, in seconds
--source-address IP              Client-side IP address to bind to
                                 (experimental)
-4, --force-ipv4                 Make all connections via IPv4
                                 (experimental)
-6, --force-ipv6                 Make all connections via IPv6
                                 (experimental)
--geo-verification-proxy URL     Use this proxy to verify the IP address for
                                 some geo-restricted sites. The default
                                 proxy specified by --proxy (or none, if the
                                 options is not present) is used for the
                                 actual downloading. (experimental)

Video Selection:

--playlist-start NUMBER          Playlist video to start at (default is 1)
--playlist-end NUMBER            Playlist video to end at (default is last)
--playlist-items ITEM_SPEC       Playlist video items to download. Specify
                                 indices of the videos in the playlist
                                 separated by commas like: "--playlist-items
                                 1,2,5,8" if you want to download videos
                                 indexed 1, 2, 5, 8 in the playlist. You can
                                 specify range: "--playlist-items
                                 1-3,7,10-13", it will download the videos
                                 at index 1, 2, 3, 7, 10, 11, 12 and 13.
--match-title REGEX              Download only matching titles (regex or
                                 caseless sub-string)
--reject-title REGEX             Skip download for matching titles (regex or
                                 caseless sub-string)
--max-downloads NUMBER           Abort after downloading NUMBER files
--min-filesize SIZE              Do not download any videos smaller than
                                 SIZE (e.g. 50k or 44.6m)
--max-filesize SIZE              Do not download any videos larger than SIZE
                                 (e.g. 50k or 44.6m)
--date DATE                      Download only videos uploaded in this date
--datebefore DATE                Download only videos uploaded on or before
                                 this date (i.e. inclusive)
--dateafter DATE                 Download only videos uploaded on or after
                                 this date (i.e. inclusive)
--min-views COUNT                Do not download any videos with less than
                                 COUNT views
--max-views COUNT                Do not download any videos with more than
                                 COUNT views
--match-filter FILTER            Generic video filter (experimental).
                                 Specify any key (see help for -o for a list
                                 of available keys) to match if the key is
                                 present, !key to check if the key is not
                                 present,key > NUMBER (like "comment_count >
                                 12", also works with >=, <, <=, !=, =) to
                                 compare against a number, and & to require
                                 multiple matches. Values which are not
                                 known are excluded unless you put a
                                 question mark (?) after the operator.For
                                 example, to only match videos that have
                                 been liked more than 100 times and disliked
                                 less than 50 times (or the dislike
                                 functionality is not available at the given
                                 service), but who also have a description,
                                 use --match-filter "like_count > 100 &
                                 dislike_count <? 50 & description" .
--no-playlist                    Download only the video, if the URL refers
                                 to a video and a playlist.
--yes-playlist                   Download the playlist, if the URL refers to
                                 a video and a playlist.
--age-limit YEARS                Download only videos suitable for the given
                                 age
--download-archive FILE          Download only videos not listed in the
                                 archive file. Record the IDs of all
                                 downloaded videos in it.
--include-ads                    Download advertisements as well
                                 (experimental)

Download Options:

-r, --limit-rate RATE            Maximum download rate in bytes per second
                                 (e.g. 50K or 4.2M)
-R, --retries RETRIES            Number of retries (default is 10), or
                                 "infinite".
--fragment-retries RETRIES       Number of retries for a fragment (default
                                 is 10), or "infinite" (DASH and hlsnative
                                 only)
--skip-unavailable-fragments     Skip unavailable fragments (DASH and
                                 hlsnative only)
--buffer-size SIZE               Size of download buffer (e.g. 1024 or 16K)
                                 (default is 1024)
--no-resize-buffer               Do not automatically adjust the buffer
                                 size. By default, the buffer size is
                                 automatically resized from an initial value
                                 of SIZE.
--playlist-reverse               Download playlist videos in reverse order
--xattr-set-filesize             Set file xattribute ytdl.filesize with
                                 expected filesize (experimental)
--hls-prefer-native              Use the native HLS downloader instead of
                                 ffmpeg
--hls-prefer-ffmpeg              Use ffmpeg instead of the native HLS
                                 downloader
--hls-use-mpegts                 Use the mpegts container for HLS videos,
                                 allowing to play the video while
                                 downloading (some players may not be able
                                 to play it)
--external-downloader COMMAND    Use the specified external downloader.
                                 Currently supports
                                 aria2c,avconv,axel,curl,ffmpeg,httpie,wget
--external-downloader-args ARGS  Give these arguments to the external
                                 downloader

Filesystem Options:

-a, --batch-file FILE            File containing URLs to download ('-' for
                                 stdin)
--id                             Use only video ID in file name
-o, --output TEMPLATE            Output filename template, see the "OUTPUT
                                 TEMPLATE" for all the info
--autonumber-size NUMBER         Specify the number of digits in
                                 %(autonumber)s when it is present in output
                                 filename template or --auto-number option
                                 is given
--restrict-filenames             Restrict filenames to only ASCII
                                 characters, and avoid "&" and spaces in
                                 filenames
-A, --auto-number                [deprecated; use -o
                                 "%(autonumber)s-%(title)s.%(ext)s" ] Number
                                 downloaded files starting from 00000
-t, --title                      [deprecated] Use title in file name
                                 (default)
-l, --literal                    [deprecated] Alias of --title
-w, --no-overwrites              Do not overwrite files
-c, --continue                   Force resume of partially downloaded files.
                                 By default, Williamyapdownloadyoutube will resume
                                 downloads if possible.
--no-continue                    Do not resume partially downloaded files
                                 (restart from beginning)
--no-part                        Do not use .part files - write directly
                                 into output file
--no-mtime                       Do not use the Last-modified header to set
                                 the file modification time
--write-description              Write video description to a .description
                                 file
--write-info-json                Write video metadata to a .info.json file
--write-annotations              Write video annotations to a
                                 .annotations.xml file
--load-info-json FILE            JSON file containing the video information
                                 (created with the "--write-info-json"
                                 option)
--cookies FILE                   File to read cookies from and dump cookie
                                 jar in
--cache-dir DIR                  Location in the filesystem where Williamyapdownloadyoutube
                                 can store some downloaded information
                                 permanently. By default
                                 $XDG_CACHE_HOME/Williamyapdownloadyoutube or
                                 ~/.cache/Williamyapdownloadyoutube . At the moment, only
                                 YouTube player files (for videos with
                                 obfuscated signatures) are cached, but that
                                 may change.
--no-cache-dir                   Disable filesystem caching
--rm-cache-dir                   Delete all filesystem cache files

Thumbnail images:

--write-thumbnail                Write thumbnail image to disk
--write-all-thumbnails           Write all thumbnail image formats to disk
--list-thumbnails                Simulate and list all available thumbnail
                                 formats

Verbosity / Simulation Options:

-q, --quiet                      Activate quiet mode
--no-warnings                    Ignore warnings
-s, --simulate                   Do not download the video and do not write
                                 anything to disk
--skip-download                  Do not download the video
-g, --get-url                    Simulate, quiet but print URL
-e, --get-title                  Simulate, quiet but print title
--get-id                         Simulate, quiet but print id
--get-thumbnail                  Simulate, quiet but print thumbnail URL
--get-description                Simulate, quiet but print video description
--get-duration                   Simulate, quiet but print video length
--get-filename                   Simulate, quiet but print output filename
--get-format                     Simulate, quiet but print output format
-j, --dump-json                  Simulate, quiet but print JSON information.
                                 See --output for a description of available
                                 keys.
-J, --dump-single-json           Simulate, quiet but print JSON information
                                 for each command-line argument. If the URL
                                 refers to a playlist, dump the whole
                                 playlist information in a single line.
--print-json                     Be quiet and print the video information as
                                 JSON (video is still being downloaded).
--newline                        Output progress bar as new lines
--no-progress                    Do not print progress bar
--console-title                  Display progress in console titlebar
-v, --verbose                    Print various debugging information
--dump-pages                     Print downloaded pages encoded using base64
                                 to debug problems (very verbose)
--write-pages                    Write downloaded intermediary pages to
                                 files in the current directory to debug
                                 problems
--print-traffic                  Display sent and read HTTP traffic
-C, --call-home                  Contact the Williamyapdownloadyoutube server for debugging
--no-call-home                   Do NOT contact the Williamyapdownloadyoutube server for
                                 debugging

Workarounds:

--encoding ENCODING              Force the specified encoding (experimental)
--no-check-certificate           Suppress HTTPS certificate validation
--prefer-insecure                Use an unencrypted connection to retrieve
                                 information about the video. (Currently
                                 supported only for YouTube)
--user-agent UA                  Specify a custom user agent
--referer URL                    Specify a custom referer, use if the video
                                 access is restricted to one domain
--add-header FIELD:VALUE         Specify a custom HTTP header and its value,
                                 separated by a colon ':'. You can use this
                                 option multiple times
--bidi-workaround                Work around terminals that lack
                                 bidirectional text support. Requires bidiv
                                 or fribidi executable in PATH
--sleep-interval SECONDS         Number of seconds to sleep before each
                                 download when used alone or a lower bound
                                 of a range for randomized sleep before each
                                 download (minimum possible number of
                                 seconds to sleep) when used along with
                                 --max-sleep-interval.
--max-sleep-interval SECONDS     Upper bound of a range for randomized sleep
                                 before each download (maximum possible
                                 number of seconds to sleep). Must only be
                                 used along with --min-sleep-interval.

Video Format Options:

-f, --format FORMAT              Video format code, see the "FORMAT
                                 SELECTION" for all the info
--all-formats                    Download all available video formats
--prefer-free-formats            Prefer free video formats unless a specific
                                 one is requested
-F, --list-formats               List all available formats of requested
                                 videos
--youtube-skip-dash-manifest     Do not download the DASH manifests and
                                 related data on YouTube videos
--merge-output-format FORMAT     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

Subtitle Options:

--write-sub                      Write subtitle file
--write-auto-sub                 Write automatically generated subtitle file
                                 (YouTube only)
--all-subs                       Download all the available subtitles of the
                                 video
--list-subs                      List all available subtitles for the video
--sub-format FORMAT              Subtitle format, accepts formats
                                 preference, for example: "srt" or
                                 "ass/srt/best"
--sub-lang LANGS                 Languages of the subtitles to download
                                 (optional) separated by commas, use --list-
                                 subs for available language tags

Authentication Options:

-u, --username USERNAME          Login with this account ID
-p, --password PASSWORD          Account password. If this option is left
                                 out, Williamyapdownloadyoutube will ask interactively.
-2, --twofactor TWOFACTOR        Two-factor auth code
-n, --netrc                      Use .netrc authentication data
--video-password PASSWORD        Video password (vimeo, smotri, youku)

Adobe Pass Options:

--ap-mso MSO                     Adobe Pass multiple-system operator (TV
                                 provider) identifier, use --ap-list-mso for
                                 a list of available MSOs
--ap-username USERNAME           Multiple-system operator account login
--ap-password PASSWORD           Multiple-system operator account password.
                                 If this option is left out, Williamyapdownloadyoutube will
                                 ask interactively.
--ap-list-mso                    List all supported multiple-system
                                 operators

Post-processing Options:

-x, --extract-audio              Convert video files to audio-only files
                                 (requires ffmpeg or avconv and ffprobe or
                                 avprobe)
--audio-format FORMAT            Specify audio format: "best", "aac",
                                 "vorbis", "mp3", "m4a", "opus", or "wav";
                                 "best" by default
--audio-quality QUALITY          Specify ffmpeg/avconv audio quality, insert
                                 a value between 0 (better) and 9 (worse)
                                 for VBR or a specific bitrate like 128K
                                 (default 5)
--recode-video FORMAT            Encode the video to another format if
                                 necessary (currently supported:
                                 mp4|flv|ogg|webm|mkv|avi)
--postprocessor-args ARGS        Give these arguments to the postprocessor
-k, --keep-video                 Keep the video file on disk after the post-
                                 processing; the video is erased by default
--no-post-overwrites             Do not overwrite post-processed files; the
                                 post-processed files are overwritten by
                                 default
--embed-subs                     Embed subtitles in the video (only for mp4,
                                 webm and mkv videos)
--embed-thumbnail                Embed thumbnail in the audio as cover art
--add-metadata                   Write metadata to the video file
--metadata-from-title FORMAT     Parse additional metadata like song title /
                                 artist from the video title. The format
                                 syntax is the same as --output, the parsed
                                 parameters replace existing values.
                                 Additional templates: %(album)s,
                                 %(artist)s. Example: --metadata-from-title
                                 "%(artist)s - %(title)s" matches a title
                                 like "Coldplay - Paradise"
--xattrs                         Write metadata to the video file's xattrs
                                 (using dublin core and xdg standards)
--fixup POLICY                   Automatically correct known faults of the
                                 file. One of never (do nothing), warn (only
                                 emit a warning), detect_or_warn (the
                                 default; fix file if we can, warn
                                 otherwise)
--prefer-avconv                  Prefer avconv over ffmpeg for running the
                                 postprocessors (default)
--prefer-ffmpeg                  Prefer ffmpeg over avconv for running the
                                 postprocessors
--ffmpeg-location PATH           Location of the ffmpeg/avconv binary;
                                 either the path to the binary or its
                                 containing directory.
--exec CMD                       Execute a command on the file after
                                 downloading, similar to find's -exec
                                 syntax. Example: --exec 'adb push {}
                                 /sdcard/Music/ && rm {}'
--convert-subs FORMAT            Convert the subtitles to other format
                                 (currently supported: srt|ass|vtt)

OUTPUT TEMPLATE

The -o option allows users to indicate a template for the output file names.

tl;dr: navigate me to examples.

The basic usage is not to set any template arguments when downloading a single file, like in Williamyapdownloadyoutube -o funny_video.flv "http://some/video". However, it may contain special sequences that will be replaced when downloading each video. The special sequences have the format %(NAME)s. To clarify, that is a percent symbol followed by a name in parentheses, followed by a lowercase S. Allowed names are:

Available for the video that belongs to some logical chapter or section:

Available for the video that is an episode of some series or programme:

Available for the media that is a track or a part of a music album:

Output template and Windows batch files

If you are using an output template inside a Windows batch file then you must escape plain percent characters (%) by doubling, so that -o "%(title)s-%(id)s.%(ext)s" should become -o "%%(title)s-%%(id)s.%%(ext)s". However you should not touch %'s that are not plain characters, e.g. environment variables for expansion should stay intact: -o "C:\%HOMEPATH%\Desktop\%%(title)s.%%(ext)s".

Output template examples

Note on Windows you may need to use double quotes instead of single.

$ Williamyapdownloadyoutube --get-filename -o '%(title)s.%(ext)s' BaW_jenozKc
Williamyapdownloadyoutube test video ''_รค↭𝕐.mp4    # All kinds of weird characters

$ Williamyapdownloadyoutube --get-filename -o '%(title)s.%(ext)s' BaW_jenozKc --restrict-filenames
Williamyapdownloadyoutube_test_video_.mp4          # A simple file name

# Download YouTube playlist videos in separate directory indexed by video order in a playlist
$ Williamyapdownloadyoutube -o '%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s' https://www.youtube.com/playlist?list=PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re

# Download all playlists of YouTube channel/user keeping each playlist in separate directory:
$ Williamyapdownloadyoutube -o '%(uploader)s/%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s' https://www.youtube.com/user/TheLinuxFoundation/playlists

# Download Udemy course keeping each chapter in separate directory under MyVideos directory in your home
$ Williamyapdownloadyoutube -u user -p password -o '~/MyVideos/%(playlist)s/%(chapter_number)s - %(chapter)s/%(title)s.%(ext)s' https://www.udemy.com/java-tutorial/

# Download entire series season keeping each series and each season in separate directory under C:/MyVideos
$ Williamyapdownloadyoutube -o "C:/MyVideos/%(series)s/%(season_number)s - %(season)s/%(episode_number)s - %(episode)s.%(ext)s" http://videomore.ru/kino_v_detalayah/5_sezon/367617

# Stream the video being downloaded to stdout
$ Williamyapdownloadyoutube -o - BaW_jenozKc

FORMAT SELECTION

By default Williamyapdownloadyoutube tries to download the best available quality, i.e. if you want the best quality you don't need to pass any special options, Williamyapdownloadyoutube will guess it for you by default.

But sometimes you may want to download in a different format, for example when you are on a slow or intermittent connection. The key mechanism for achieving this is so-called format selection based on which you can explicitly specify desired format, select formats based on some criterion or criteria, setup precedence and much more.

The general syntax for format selection is --format FORMAT or shorter -f FORMAT where FORMAT is a selector expression, i.e. an expression that describes format or formats you would like to download.

tl;dr: navigate me to examples.

The simplest case is requesting a specific format, for example with -f 22 you can download the format with format code equal to 22. You can get the list of available format codes for particular video using --list-formats or -F. Note that these format codes are extractor specific.

You can also use a file extension (currently 3gp, aac, flv, m4a, mp3, mp4, ogg, wav, webm are supported) to download the best quality format of a particular file extension served as a single file, e.g. -f webm will download the best quality format with the webm extension served as a single file.

You can also use special names to select particular edge case formats:

For example, to download the worst quality video-only format you can use -f worstvideo.

If you want to download multiple videos and they don't have the same formats available, you can specify the order of preference using slashes. Note that slash is left-associative, i.e. formats on the left hand side are preferred, for example -f 22/17/18 will download format 22 if it's available, otherwise it will download format 17 if it's available, otherwise it will download format 18 if it's available, otherwise it will complain that no suitable formats are available for download.

If you want to download several formats of the same video use a comma as a separator, e.g. -f 22,17,18 will download all these three formats, of course if they are available. Or a more sophisticated example combined with the precedence feature: -f 136/137/mp4/bestvideo,140/m4a/bestaudio.

You can also filter the video formats by putting a condition in brackets, as in -f "best[height=720]" (or -f "[filesize>10M]").

The following numeric meta fields can be used with comparisons <, <=, >, >=, = (equals), != (not equals):

Also filtering work for comparisons = (equals), != (not equals), ^= (begins with), $= (ends with), *= (contains) and following string meta fields:

Note that none of the aforementioned meta fields are guaranteed to be present since this solely depends on the metadata obtained by particular extractor, i.e. the metadata offered by the video hoster.

Formats for which the value is not known are excluded unless you put a question mark (?) after the operator. You can combine format filters, so -f "[height <=? 720][tbr>500]" selects up to 720p videos (or videos where the height is not known) with a bitrate of at least 500 KBit/s.

You can merge the video and audio of two formats into a single file using -f <video-format>+<audio-format> (requires ffmpeg or avconv installed), for example -f bestvideo+bestaudio will download the best video-only format, the best audio-only format and mux them together with ffmpeg/avconv.

Format selectors can also be grouped using parentheses, for example if you want to download the best mp4 and webm formats with a height lower than 480 you can use -f '(mp4,webm)[height<480]'.

Since the end of April 2015 and version 2015.04.26, Williamyapdownloadyoutube uses -f bestvideo+bestaudio/best as the default format selection (see #5447, #5456). If ffmpeg or avconv are installed this results in downloading bestvideo and bestaudioseparately and muxing them together into a single file giving the best overall quality available. Otherwise it falls back to bestand results in downloading the best available quality served as a single file. best is also needed for videos that don't come from YouTube because they don't provide the audio and video in two different files. If you want to only download some DASH formats (for example if you are not interested in getting videos with a resolution higher than 1080p), you can add -f bestvideo[height<=?1080]+bestaudio/best to your configuration file. Note that if you use Williamyapdownloadyoutube to stream to stdout(and most likely to pipe it to your media player then), i.e. you explicitly specify output template as -o -, Williamyapdownloadyoutube still uses -f best format selection in order to start content delivery immediately to your player and not to wait until bestvideo and bestaudio are downloaded and muxed.

If you want to preserve the old format selection behavior (prior to Williamyapdownloadyoutube 2015.04.26), i.e. you want to download the best available quality media served as a single file, you should explicitly specify your choice with -f best. You may want to add it to the configuration file in order not to type it every time you run Williamyapdownloadyoutube.

Format selection examples

Note on Windows you may need to use double quotes instead of single.

# Download best mp4 format available or any other best if no mp4 available
$ Williamyapdownloadyoutube -f 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best'

# Download best format available but not better that 480p
$ Williamyapdownloadyoutube -f 'bestvideo[height<=480]+bestaudio/best[height<=480]'

# Download best video only format but no bigger that 50 MB
$ Williamyapdownloadyoutube -f 'best[filesize<50M]'

# Download best format available via direct link over HTTP/HTTPS protocol
$ Williamyapdownloadyoutube -f '(bestvideo+bestaudio/best)[protocol^=http]'

# Download the best video format and the best audio format without merging them
$ Williamyapdownloadyoutube -f 'bestvideo,bestaudio' -o '%(title)s.f%(format_id)s.%(ext)s'

Note that in the last example, an output template is recommended as bestvideo and bestaudio may have the same file name.

VIDEO SELECTION

Videos can be filtered by their upload date using the options --date, --datebefore or --dateafter. They accept dates in two formats:

Examples:

# Download only the videos uploaded in the last 6 months
$ Williamyapdownloadyoutube --dateafter now-6months

# Download only the videos uploaded on January 1, 1970
$ Williamyapdownloadyoutube --date 19700101

$ # Download only the videos uploaded in the 200x decade
$ Williamyapdownloadyoutube --dateafter 20000101 --datebefore 20091231