-youtube-dl - download videos from youtube.com or other video platforms
+[](https://travis-ci.org/ytdl-org/youtube-dl)
+
+this is not youtube-dl - it does not download videos from youtube.com or other video platforms
- [INSTALLATION](#installation)
- [DESCRIPTION](#description)
# INSTALLATION
-To install it right away for all UNIX users (Linux, OS X, etc.), type:
+To install it right away for all UNIX users (Linux, macOS, etc.), type:
sudo curl -L https://yt-dl.org/downloads/latest/youtube-dl -o /usr/local/bin/youtube-dl
sudo chmod a+rx /usr/local/bin/youtube-dl
sudo wget https://yt-dl.org/downloads/latest/youtube-dl -O /usr/local/bin/youtube-dl
sudo chmod a+rx /usr/local/bin/youtube-dl
-Windows users can [download an .exe file](https://yt-dl.org/latest/youtube-dl.exe) and place it in any location on their [PATH](http://en.wikipedia.org/wiki/PATH_%28variable%29) except for `%SYSTEMROOT%\System32` (e.g. **do not** put in `C:\Windows\System32`).
+Windows users can [download an .exe file](https://yt-dl.org/latest/youtube-dl.exe) and place it in any location on their [PATH](https://en.wikipedia.org/wiki/PATH_%28variable%29) except for `%SYSTEMROOT%\System32` (e.g. **do not** put in `C:\Windows\System32`).
You can also use pip:
This command will update youtube-dl if you have already installed it. See the [pypi page](https://pypi.python.org/pypi/youtube_dl) for more information.
-OS X users can install youtube-dl with [Homebrew](http://brew.sh/):
+macOS users can install youtube-dl with [Homebrew](https://brew.sh/):
brew install youtube-dl
sudo port install youtube-dl
-Alternatively, refer to the [developer instructions](#developer-instructions) for how to check out and work with the git repository. For further options, including PGP signatures, see the [youtube-dl Download Page](https://rg3.github.io/youtube-dl/download.html).
+Alternatively, refer to the [developer instructions](#developer-instructions) for how to check out and work with the git repository. For further options, including PGP signatures, see the [youtube-dl Download Page](https://ytdl-org.github.io/youtube-dl/download.html).
# DESCRIPTION
-**youtube-dl** is a command-line program to download videos from YouTube.com and a few more sites. It requires the Python interpreter, version 2.6, 2.7, or 3.2+, and it is not platform specific. It should work on your Unix box, on Windows or on Mac OS X. It is released to the public domain, which means you can modify it, redistribute it or use it however you like.
+**youtube-dl** is a command-line program to download videos from YouTube.com and a few more sites. It requires the Python interpreter, version 2.6, 2.7, or 3.2+, and it is not platform specific. It should work on your Unix box, on Windows or on macOS. It is released to the public domain, which means you can modify it, redistribute it or use it however you like.
youtube-dl [OPTIONS] URL [URL...]
## Network Options:
--proxy URL Use the specified HTTP/HTTPS/SOCKS proxy.
- To enable experimental SOCKS proxy, specify
- a proper scheme. For example
+ To enable 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
-4, --force-ipv4 Make all connections via IPv4
-6, --force-ipv6 Make all connections via IPv6
+
+## Geo Restriction:
--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
+ option is not present) is used for the
actual downloading.
+ --geo-bypass Bypass geographic restriction via faking
+ X-Forwarded-For HTTP header
+ --no-geo-bypass Do not bypass geographic restriction via
+ faking X-Forwarded-For HTTP header
+ --geo-bypass-country CODE Force bypass geographic restriction with
+ explicitly provided two-letter ISO 3166-2
+ country code
+ --geo-bypass-ip-block IP_BLOCK Force bypass geographic restriction with
+ explicitly provided IP block in CIDR
+ notation
## Video Selection:
--playlist-start NUMBER Playlist video to start at (default is 1)
--max-views COUNT Do not download any videos with more than
COUNT views
--match-filter FILTER Generic video filter. 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" .
+ the "OUTPUT TEMPLATE" 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, key = 'LITERAL'
+ (like "uploader = 'Mike Smith'", also works
+ with !=) to match against a string literal
+ 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
-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)
+ is 10), or "infinite" (DASH, hlsnative and
+ ISM)
+ --skip-unavailable-fragments Skip unavailable fragments (DASH, hlsnative
+ and ISM)
--abort-on-unavailable-fragment Abort downloading when some fragment is not
available
+ --keep-fragments Keep downloaded fragments on disk after
+ downloading is finished; fragments are
+ erased by default
--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.
+ --http-chunk-size SIZE 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)
--playlist-reverse Download playlist videos in reverse order
--playlist-random Download playlist videos in random order
--xattr-set-filesize Set file xattribute ytdl.filesize with
- expected file size (experimental)
+ expected file size
--hls-prefer-native Use the native HLS downloader instead of
ffmpeg
--hls-prefer-ffmpeg Use ffmpeg instead of the native HLS
## Filesystem Options:
-a, --batch-file FILE File containing URLs to download ('-' for
- stdin)
+ stdin), one URL per line. Lines starting
+ with '#', ';' or ']' are considered as
+ comments and ignored.
--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 (default is 5)
--autonumber-start NUMBER Specify the start value for %(autonumber)s
(default is 1)
--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, youtube-dl will resume
--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.
+ See the "OUTPUT TEMPLATE" 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
(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; No effect without -x
+ "flac", "mp3", "m4a", "opus", "vorbis", or
+ "wav"; "best" by default; No effect without
+ -x
--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
--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"
+ syntax is the same as --output. Regular
+ expression with named capture groups may
+ also be used. The parsed parameters replace
+ existing values. Example: --metadata-from-
+ title "%(artist)s - %(title)s" matches a
+ title like "Coldplay - Paradise". Example
+ (regex): --metadata-from-title
+ "(?P<artist>.+?) - (?P<title>.+)"
--xattrs Write metadata to the video file's xattrs
(using dublin core and xdg standards)
--fixup POLICY Automatically correct known faults of 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
+ --prefer-ffmpeg Prefer ffmpeg over avconv for running the
+ postprocessors (default)
--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 {}'
+ downloading and post-processing, 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)
+ (currently supported: srt|ass|vtt|lrc)
# CONFIGURATION
-You can configure youtube-dl by placing any supported command line option to a configuration file. On Linux and OS X, the system wide configuration file is located at `/etc/youtube-dl.conf` and the user wide configuration file at `~/.config/youtube-dl/config`. On Windows, the user wide configuration file locations are `%APPDATA%\youtube-dl\config.txt` or `C:\Users\<user name>\youtube-dl.conf`. Note that by default configuration file may not exist so you may need to create it yourself.
+You can configure youtube-dl by placing any supported command line option to a configuration file. On Linux and macOS, the system wide configuration file is located at `/etc/youtube-dl.conf` and the user wide configuration file at `~/.config/youtube-dl/config`. On Windows, the user wide configuration file locations are `%APPDATA%\youtube-dl\config.txt` or `C:\Users\<user name>\youtube-dl.conf`. Note that by default configuration file may not exist so you may need to create it yourself.
For example, with the following configuration file youtube-dl will always extract the audio, not copy the mtime, use a proxy and save all videos under `Movies` directory in your home directory:
```
### Authentication with `.netrc` file
-You may also want to configure automatic credentials storage for extractors that support authentication (by providing login and password with `--username` and `--password`) in order not to pass credentials as command line arguments on every youtube-dl execution and prevent tracking plain text passwords in the shell command history. You can achieve this using a [`.netrc` file](http://stackoverflow.com/tags/.netrc/info) on a per extractor basis. For that you will need to create a `.netrc` file in your `$HOME` and restrict permissions to read/write by only you:
+You may also want to configure automatic credentials storage for extractors that support authentication (by providing login and password with `--username` and `--password`) in order not to pass credentials as command line arguments on every youtube-dl execution and prevent tracking plain text passwords in the shell command history. You can achieve this using a [`.netrc` file](https://stackoverflow.com/tags/.netrc/info) on a per extractor basis. For that you will need to create a `.netrc` file in your `$HOME` and restrict permissions to read/write by only you:
```
touch $HOME/.netrc
chmod a-rwx,u+rw $HOME/.netrc
```
To activate authentication with the `.netrc` file you should pass `--netrc` to youtube-dl or place it in the [configuration file](#configuration).
-On Windows you may also need to setup the `%HOME%` environment variable manually.
+On Windows you may also need to setup the `%HOME%` environment variable manually. For example:
+```
+set HOME=%USERPROFILE%
+```
# OUTPUT TEMPLATE
**tl;dr:** [navigate me to examples](#output-template-examples).
-The basic usage is not to set any template arguments when downloading a single file, like in `youtube-dl -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:
-
- - `id`: Video identifier
- - `title`: Video title
- - `url`: Video URL
- - `ext`: Video filename extension
- - `alt_title`: A secondary title of the video
- - `display_id`: An alternative identifier for the video
- - `uploader`: Full name of the video uploader
- - `license`: License name the video is licensed under
- - `creator`: The creator of the video
- - `release_date`: The date (YYYYMMDD) when the video was released
- - `timestamp`: UNIX timestamp of the moment the video became available
- - `upload_date`: Video upload date (YYYYMMDD)
- - `uploader_id`: Nickname or id of the video uploader
- - `location`: Physical location where the video was filmed
- - `duration`: Length of the video in seconds
- - `view_count`: How many users have watched the video on the platform
- - `like_count`: Number of positive ratings of the video
- - `dislike_count`: Number of negative ratings of the video
- - `repost_count`: Number of reposts of the video
- - `average_rating`: Average rating give by users, the scale used depends on the webpage
- - `comment_count`: Number of comments on the video
- - `age_limit`: Age restriction for the video (years)
- - `format`: A human-readable description of the format
- - `format_id`: Format code specified by `--format`
- - `format_note`: Additional info about the format
- - `width`: Width of the video
- - `height`: Height of the video
- - `resolution`: Textual description of width and height
- - `tbr`: Average bitrate of audio and video in KBit/s
- - `abr`: Average audio bitrate in KBit/s
- - `acodec`: Name of the audio codec in use
- - `asr`: Audio sampling rate in Hertz
- - `vbr`: Average video bitrate in KBit/s
- - `fps`: Frame rate
- - `vcodec`: Name of the video codec in use
- - `container`: Name of the container format
- - `filesize`: The number of bytes, if known in advance
- - `filesize_approx`: An estimate for the number of bytes
- - `protocol`: The protocol that will be used for the actual download
- - `extractor`: Name of the extractor
- - `extractor_key`: Key name of the extractor
- - `epoch`: Unix epoch when creating the file
- - `autonumber`: Five-digit number that will be increased with each download, starting at zero
- - `playlist`: Name or id of the playlist that contains the video
- - `playlist_index`: Index of the video in the playlist padded with leading zeros according to the total length of the playlist
- - `playlist_id`: Playlist identifier
- - `playlist_title`: Playlist title
-
+The basic usage is not to set any template arguments when downloading a single file, like in `youtube-dl -o funny_video.flv "https://some/video"`. However, it may contain special sequences that will be replaced when downloading each video. The special sequences may be formatted according to [python string formatting operations](https://docs.python.org/2/library/stdtypes.html#string-formatting). For example, `%(NAME)s` or `%(NAME)05d`. To clarify, that is a percent symbol followed by a name in parentheses, followed by formatting operations. Allowed names along with sequence type are:
+
+ - `id` (string): Video identifier
+ - `title` (string): Video title
+ - `url` (string): Video URL
+ - `ext` (string): Video filename extension
+ - `alt_title` (string): A secondary title of the video
+ - `display_id` (string): An alternative identifier for the video
+ - `uploader` (string): Full name of the video uploader
+ - `license` (string): License name the video is licensed under
+ - `creator` (string): The creator of the video
+ - `release_date` (string): The date (YYYYMMDD) when the video was released
+ - `timestamp` (numeric): UNIX timestamp of the moment the video became available
+ - `upload_date` (string): Video upload date (YYYYMMDD)
+ - `uploader_id` (string): Nickname or id of the video uploader
+ - `channel` (string): Full name of the channel the video is uploaded on
+ - `channel_id` (string): Id of the channel
+ - `location` (string): Physical location where the video was filmed
+ - `duration` (numeric): Length of the video in seconds
+ - `view_count` (numeric): How many users have watched the video on the platform
+ - `like_count` (numeric): Number of positive ratings of the video
+ - `dislike_count` (numeric): Number of negative ratings of the video
+ - `repost_count` (numeric): Number of reposts of the video
+ - `average_rating` (numeric): Average rating give by users, the scale used depends on the webpage
+ - `comment_count` (numeric): Number of comments on the video
+ - `age_limit` (numeric): Age restriction for the video (years)
+ - `is_live` (boolean): Whether this video is a live stream or a fixed-length video
+ - `start_time` (numeric): Time in seconds where the reproduction should start, as specified in the URL
+ - `end_time` (numeric): Time in seconds where the reproduction should end, as specified in the URL
+ - `format` (string): A human-readable description of the format
+ - `format_id` (string): Format code specified by `--format`
+ - `format_note` (string): Additional info about the format
+ - `width` (numeric): Width of the video
+ - `height` (numeric): Height of the video
+ - `resolution` (string): Textual description of width and height
+ - `tbr` (numeric): Average bitrate of audio and video in KBit/s
+ - `abr` (numeric): Average audio bitrate in KBit/s
+ - `acodec` (string): Name of the audio codec in use
+ - `asr` (numeric): Audio sampling rate in Hertz
+ - `vbr` (numeric): Average video bitrate in KBit/s
+ - `fps` (numeric): Frame rate
+ - `vcodec` (string): Name of the video codec in use
+ - `container` (string): Name of the container format
+ - `filesize` (numeric): The number of bytes, if known in advance
+ - `filesize_approx` (numeric): An estimate for the number of bytes
+ - `protocol` (string): The protocol that will be used for the actual download
+ - `extractor` (string): Name of the extractor
+ - `extractor_key` (string): Key name of the extractor
+ - `epoch` (numeric): Unix epoch when creating the file
+ - `autonumber` (numeric): Five-digit number that will be increased with each download, starting at zero
+ - `playlist` (string): Name or id of the playlist that contains the video
+ - `playlist_index` (numeric): Index of the video in the playlist padded with leading zeros according to the total length of the playlist
+ - `playlist_id` (string): Playlist identifier
+ - `playlist_title` (string): Playlist title
+ - `playlist_uploader` (string): Full name of the playlist uploader
+ - `playlist_uploader_id` (string): Nickname or id of the playlist uploader
Available for the video that belongs to some logical chapter or section:
- - `chapter`: Name or title of the chapter the video belongs to
- - `chapter_number`: Number of the chapter the video belongs to
- - `chapter_id`: Id of the chapter the video belongs to
+
+ - `chapter` (string): Name or title of the chapter the video belongs to
+ - `chapter_number` (numeric): Number of the chapter the video belongs to
+ - `chapter_id` (string): Id of the chapter the video belongs to
Available for the video that is an episode of some series or programme:
- - `series`: Title of the series or programme the video episode belongs to
- - `season`: Title of the season the video episode belongs to
- - `season_number`: Number of the season the video episode belongs to
- - `season_id`: Id of the season the video episode belongs to
- - `episode`: Title of the video episode
- - `episode_number`: Number of the video episode within a season
- - `episode_id`: Id of the video episode
+
+ - `series` (string): Title of the series or programme the video episode belongs to
+ - `season` (string): Title of the season the video episode belongs to
+ - `season_number` (numeric): Number of the season the video episode belongs to
+ - `season_id` (string): Id of the season the video episode belongs to
+ - `episode` (string): Title of the video episode
+ - `episode_number` (numeric): Number of the video episode within a season
+ - `episode_id` (string): Id of the video episode
Available for the media that is a track or a part of a music album:
- - `track`: Title of the track
- - `track_number`: Number of the track within an album or a disc
- - `track_id`: Id of the track
- - `artist`: Artist(s) of the track
- - `genre`: Genre(s) of the track
- - `album`: Title of the album the track belongs to
- - `album_type`: Type of the album
- - `album_artist`: List of all artists appeared on the album
- - `disc_number`: Number of the disc or other physical medium the track belongs to
- - `release_year`: Year (YYYY) when the album was released
+
+ - `track` (string): Title of the track
+ - `track_number` (numeric): Number of the track within an album or a disc
+ - `track_id` (string): Id of the track
+ - `artist` (string): Artist(s) of the track
+ - `genre` (string): Genre(s) of the track
+ - `album` (string): Title of the album the track belongs to
+ - `album_type` (string): Type of the album
+ - `album_artist` (string): List of all artists appeared on the album
+ - `disc_number` (numeric): Number of the disc or other physical medium the track belongs to
+ - `release_year` (numeric): Year (YYYY) when the album was released
Each aforementioned sequence when referenced in an output template will be replaced by the actual value corresponding to the sequence name. Note that some of the sequences are not guaranteed to be present since they depend on the metadata obtained by a particular extractor. Such sequences will be replaced with `NA`.
For example for `-o %(title)s-%(id)s.%(ext)s` and an mp4 video with title `youtube-dl test video` and id `BaW_jenozKcj`, this will result in a `youtube-dl test video-BaW_jenozKcj.mp4` file created in the current directory.
+For numeric sequences you can use numeric related formatting, for example, `%(view_count)05d` will result in a string with view count padded with zeros up to 5 characters, like in `00042`.
+
Output templates can also contain arbitrary hierarchical path, e.g. `-o '%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s'` which will result in downloading each video in a directory corresponding to this path template. Any missing directory will be automatically created for you.
To use percent literals in an output template use `%%`. To output to stdout use `-o -`.
#### Output template examples
-Note on Windows you may need to use double quotes instead of single.
+Note that on Windows you may need to use double quotes instead of single.
```bash
$ youtube-dl --get-filename -o '%(title)s.%(ext)s' BaW_jenozKc
$ youtube-dl -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
-$ youtube-dl -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
+$ youtube-dl -o "C:/MyVideos/%(series)s/%(season_number)s - %(season)s/%(episode_number)s - %(episode)s.%(ext)s" https://videomore.ru/kino_v_detalayah/5_sezon/367617
# Stream the video being downloaded to stdout
$ youtube-dl -o - BaW_jenozKc
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:
+
- `best`: Select the best quality format represented by a single file with video and audio.
- `worst`: Select the worst quality format represented by a single file with video and audio.
- `bestvideo`: Select the best quality video-only format (e.g. DASH video). May not be available.
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):
+
- `filesize`: The number of bytes, if known in advance
- `width`: Width of the video, if known
- `height`: Height of the video, if known
- `asr`: Audio sampling rate in Hertz
- `fps`: Frame rate
-Also filtering work for comparisons `=` (equals), `!=` (not equals), `^=` (begins with), `$=` (ends with), `*=` (contains) and following string meta fields:
+Also filtering work for comparisons `=` (equals), `^=` (starts with), `$=` (ends with), `*=` (contains) and following string meta fields:
+
- `ext`: File extension
- `acodec`: Name of the audio codec in use
- `vcodec`: Name of the video codec in use
- `container`: Name of the container format
- - `protocol`: The protocol that will be used for the actual download, lower-case (`http`, `https`, `rtsp`, `rtmp`, `rtmpe`, `mms`, `f4m`, `ism`, `m3u8`, or `m3u8_native`)
+ - `protocol`: The protocol that will be used for the actual download, lower-case (`http`, `https`, `rtsp`, `rtmp`, `rtmpe`, `mms`, `f4m`, `ism`, `http_dash_segments`, `m3u8`, or `m3u8_native`)
- `format_id`: A short description of the format
+Any string comparison may be prefixed with negation `!` in order to produce an opposite comparison, e.g. `!*=` (does not contain).
+
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.
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, youtube-dl uses `-f bestvideo+bestaudio/best` as the default format selection (see [#5447](https://github.com/rg3/youtube-dl/issues/5447), [#5456](https://github.com/rg3/youtube-dl/issues/5456)). If ffmpeg or avconv are installed this results in downloading `bestvideo` and `bestaudio` separately and muxing them together into a single file giving the best overall quality available. Otherwise it falls back to `best` and 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 youtube-dl to stream to `stdout` (and most likely to pipe it to your media player then), i.e. you explicitly specify output template as `-o -`, youtube-dl 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.
+Since the end of April 2015 and version 2015.04.26, youtube-dl uses `-f bestvideo+bestaudio/best` as the default format selection (see [#5447](https://github.com/ytdl-org/youtube-dl/issues/5447), [#5456](https://github.com/ytdl-org/youtube-dl/issues/5456)). If ffmpeg or avconv are installed this results in downloading `bestvideo` and `bestaudio` separately and muxing them together into a single file giving the best overall quality available. Otherwise it falls back to `best` and 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 youtube-dl to stream to `stdout` (and most likely to pipe it to your media player then), i.e. you explicitly specify output template as `-o -`, youtube-dl 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 youtube-dl 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](#configuration) in order not to type it every time you run youtube-dl.
#### Format selection examples
-Note on Windows you may need to use double quotes instead of single.
+Note that on Windows you may need to use double quotes instead of single.
```bash
# Download best mp4 format available or any other best if no mp4 available
$ youtube-dl -f 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best'
-# Download best format available but not better that 480p
+# Download best format available but no better than 480p
$ youtube-dl -f 'bestvideo[height<=480]+bestaudio/best[height<=480]'
# Download best video only format but no bigger than 50 MB
### How do I update youtube-dl?
-If you've followed [our manual installation instructions](http://rg3.github.io/youtube-dl/download.html), you can simply run `youtube-dl -U` (or, on Linux, `sudo youtube-dl -U`).
+If you've followed [our manual installation instructions](https://ytdl-org.github.io/youtube-dl/download.html), you can simply run `youtube-dl -U` (or, on Linux, `sudo youtube-dl -U`).
If you have used pip, a simple `sudo pip install -U youtube-dl` is sufficient to update.
-If you have installed youtube-dl using a package manager like *apt-get* or *yum*, use the standard system update mechanism to update. Note that distribution packages are often outdated. As a rule of thumb, youtube-dl releases at least once a month, and often weekly or even daily. Simply go to http://yt-dl.org/ to find out the current version. Unfortunately, there is nothing we youtube-dl developers can do if your distribution serves a really outdated version. You can (and should) complain to your distribution in their bugtracker or support forum.
+If you have installed youtube-dl using a package manager like *apt-get* or *yum*, use the standard system update mechanism to update. Note that distribution packages are often outdated. As a rule of thumb, youtube-dl releases at least once a month, and often weekly or even daily. Simply go to https://yt-dl.org to find out the current version. Unfortunately, there is nothing we youtube-dl developers can do if your distribution serves a really outdated version. You can (and should) complain to your distribution in their bugtracker or support forum.
As a last resort, you can also uninstall the version installed by your package manager and follow our manual installation instructions. For that, remove the distribution's package, with a line like
sudo apt-get remove -y youtube-dl
-Afterwards, simply follow [our manual installation instructions](http://rg3.github.io/youtube-dl/download.html):
+Afterwards, simply follow [our manual installation instructions](https://ytdl-org.github.io/youtube-dl/download.html):
```
-sudo wget https://yt-dl.org/latest/youtube-dl -O /usr/local/bin/youtube-dl
-sudo chmod a+x /usr/local/bin/youtube-dl
+sudo wget https://yt-dl.org/downloads/latest/youtube-dl -O /usr/local/bin/youtube-dl
+sudo chmod a+rx /usr/local/bin/youtube-dl
hash -r
```
### I get HTTP error 402 when trying to download a video. What's this?
-Apparently YouTube requires you to pass a CAPTCHA test if you download too much. We're [considering to provide a way to let you solve the CAPTCHA](https://github.com/rg3/youtube-dl/issues/154), but at the moment, your best course of action is pointing a web browser to the youtube URL, solving the CAPTCHA, and restart youtube-dl.
+Apparently YouTube requires you to pass a CAPTCHA test if you download too much. We're [considering to provide a way to let you solve the CAPTCHA](https://github.com/ytdl-org/youtube-dl/issues/154), but at the moment, your best course of action is pointing a web browser to the youtube URL, solving the CAPTCHA, and restart youtube-dl.
### Do I need any other programs?
youtube-dl works fine on its own on most sites. However, if you want to convert video/audio, you'll need [avconv](https://libav.org/) or [ffmpeg](https://www.ffmpeg.org/). On some sites - most notably YouTube - videos can be retrieved in a higher quality format without sound. youtube-dl will detect whether avconv/ffmpeg is present and automatically pick the best option.
-Videos or video formats streamed via RTMP protocol can only be downloaded when [rtmpdump](https://rtmpdump.mplayerhq.hu/) is installed. Downloading MMS and RTSP videos requires either [mplayer](http://mplayerhq.hu/) or [mpv](https://mpv.io/) to be installed.
+Videos or video formats streamed via RTMP protocol can only be downloaded when [rtmpdump](https://rtmpdump.mplayerhq.hu/) is installed. Downloading MMS and RTSP videos requires either [mplayer](https://mplayerhq.hu/) or [mpv](https://mpv.io/) to be installed.
### I have downloaded a video but how can I play it?
-Once the video is fully downloaded, use any video player, such as [mpv](https://mpv.io/), [vlc](http://www.videolan.org/) or [mplayer](http://www.mplayerhq.hu/).
+Once the video is fully downloaded, use any video player, such as [mpv](https://mpv.io/), [vlc](https://www.videolan.org/) or [mplayer](https://www.mplayerhq.hu/).
### I extracted a video URL with `-g`, but it does not play on another machine / in my web browser.
### HTTP Error 429: Too Many Requests or 402: Payment Required
-These two error codes indicate that the service is blocking your IP address because of overuse. Contact the service and ask them to unblock your IP address, or - if you have acquired a whitelisted IP address already - use the [`--proxy` or `--source-address` options](#network-options) to select another IP address.
+These two error codes indicate that the service is blocking your IP address because of overuse. Usually this is a soft block meaning that you can gain access again after solving CAPTCHA. Just open a browser and solve a CAPTCHA the service suggests you and after that [pass cookies](#how-do-i-pass-cookies-to-youtube-dl) to youtube-dl. Note that if your machine has multiple external IPs then you should also pass exactly the same IP you've used for solving CAPTCHA with [`--source-address`](#network-options). Also you may need to pass a `User-Agent` HTTP header of your browser with [`--user-agent`](#workarounds).
+
+If this is not the case (no CAPTCHA suggested to solve by the service) then you can contact the service and ask them to unblock your IP address, or - if you have acquired a whitelisted IP address already - use the [`--proxy` or `--source-address` options](#network-options) to select another IP address.
### SyntaxError: Non-ASCII character
### What is this binary file? Where has the code gone?
-Since June 2012 ([#342](https://github.com/rg3/youtube-dl/issues/342)) youtube-dl is packed as an executable zipfile, simply unzip it (might need renaming to `youtube-dl.zip` first on some systems) or clone the git repository, as laid out above. If you modify the code, you can run it by executing the `__main__.py` file. To recompile the executable, run `make youtube-dl`.
+Since June 2012 ([#342](https://github.com/ytdl-org/youtube-dl/issues/342)) youtube-dl is packed as an executable zipfile, simply unzip it (might need renaming to `youtube-dl.zip` first on some systems) or clone the git repository, as laid out above. If you modify the code, you can run it by executing the `__main__.py` file. To recompile the executable, run `make youtube-dl`.
### The exe throws an error due to missing `MSVCR100.dll`
### How do I download a video starting with a `-`?
-Either prepend `http://www.youtube.com/watch?v=` or separate the ID from the options with `--`:
+Either prepend `https://www.youtube.com/watch?v=` or separate the ID from the options with `--`:
youtube-dl -- -wNyEUrxzFU
- youtube-dl "http://www.youtube.com/watch?v=-wNyEUrxzFU"
+ youtube-dl "https://www.youtube.com/watch?v=-wNyEUrxzFU"
### How do I pass cookies to youtube-dl?
Use the `--cookies` option, for example `--cookies /path/to/cookies/file.txt`.
-In order to extract cookies from browser use any conforming browser extension for exporting cookies. For example, [cookies.txt](https://chrome.google.com/webstore/detail/cookiestxt/njabckikapfpffapmjgojcnbfjonfjfg) (for Chrome) or [Export Cookies](https://addons.mozilla.org/en-US/firefox/addon/export-cookies/) (for Firefox).
+In order to extract cookies from browser use any conforming browser extension for exporting cookies. For example, [cookies.txt](https://chrome.google.com/webstore/detail/cookiestxt/njabckikapfpffapmjgojcnbfjonfjfg) (for Chrome) or [cookies.txt](https://addons.mozilla.org/en-US/firefox/addon/cookies-txt/) (for Firefox).
-Note that the cookies file must be in Mozilla/Netscape format and the first line of the cookies file must be either `# HTTP Cookie File` or `# Netscape HTTP Cookie File`. Make sure you have correct [newline format](https://en.wikipedia.org/wiki/Newline) in the cookies file and convert newlines if necessary to correspond with your OS, namely `CRLF` (`\r\n`) for Windows and `LF` (`\n`) for Unix and Unix-like systems (Linux, Mac OS, etc.). `HTTP Error 400: Bad Request` when using `--cookies` is a good sign of invalid newline format.
+Note that the cookies file must be in Mozilla/Netscape format and the first line of the cookies file must be either `# HTTP Cookie File` or `# Netscape HTTP Cookie File`. Make sure you have correct [newline format](https://en.wikipedia.org/wiki/Newline) in the cookies file and convert newlines if necessary to correspond with your OS, namely `CRLF` (`\r\n`) for Windows and `LF` (`\n`) for Unix and Unix-like systems (Linux, macOS, etc.). `HTTP Error 400: Bad Request` when using `--cookies` is a good sign of invalid newline format.
Passing cookies to youtube-dl is a good way to workaround login when a particular extractor does not implement it explicitly. Another use case is working around [CAPTCHA](https://en.wikipedia.org/wiki/CAPTCHA) some websites require you to solve in particular cases in order to get access (e.g. YouTube, CloudFlare).
### How do I stream directly to media player?
-You will first need to tell youtube-dl to stream media to stdout with `-o -`, and also tell your media player to read from stdin (it must be capable of this for streaming) and then pipe former to latter. For example, streaming to [vlc](http://www.videolan.org/) can be achieved with:
+You will first need to tell youtube-dl to stream media to stdout with `-o -`, and also tell your media player to read from stdin (it must be capable of this for streaming) and then pipe former to latter. For example, streaming to [vlc](https://www.videolan.org/) can be achieved with:
- youtube-dl -o - "http://www.youtube.com/watch?v=BaW_jenozKcj" | vlc -
+ youtube-dl -o - "https://www.youtube.com/watch?v=BaW_jenozKcj" | vlc -
### How do I download only new videos from a playlist?
When youtube-dl knows that one particular downloader works better for a given website, that downloader will be picked. Otherwise, youtube-dl will pick the best downloader for general compatibility, which at the moment happens to be ffmpeg. This choice may change in future versions of youtube-dl, with improvements of the built-in downloader and/or ffmpeg.
-In particular, the generic extractor (used when your website is not in the [list of supported sites by youtube-dl](http://rg3.github.io/youtube-dl/supportedsites.html) cannot mandate one specific downloader.
+In particular, the generic extractor (used when your website is not in the [list of supported sites by youtube-dl](https://ytdl-org.github.io/youtube-dl/supportedsites.html) cannot mandate one specific downloader.
If you put either `--hls-prefer-native` or `--hls-prefer-ffmpeg` into your configuration, a different subset of videos will fail to download correctly. Instead, it is much better to [file an issue](https://yt-dl.org/bug) or a pull request which details why the native or the ffmpeg HLS downloader is a better choice for your use case.
### How can I detect whether a given URL is supported by youtube-dl?
-For one, have a look at the [list of supported sites](docs/supportedsites.md). Note that it can sometimes happen that the site changes its URL scheme (say, from http://example.com/video/1234567 to http://example.com/v/1234567 ) and youtube-dl reports an URL of a service in that list as unsupported. In that case, simply report a bug.
+For one, have a look at the [list of supported sites](docs/supportedsites.md). Note that it can sometimes happen that the site changes its URL scheme (say, from https://example.com/video/1234567 to https://example.com/v/1234567 ) and youtube-dl reports an URL of a service in that list as unsupported. In that case, simply report a bug.
It is *not* possible to detect whether a URL is supported or not. That's because youtube-dl contains a generic extractor which matches **all** URLs. You may be tempted to disable, exclude, or remove the generic extractor, but the generic extractor not only allows users to extract videos from lots of websites that embed a video from another service, but may also be used to extract video from a service that it's hosting itself. Therefore, we neither recommend nor support disabling, excluding, or removing the generic extractor.
# DEVELOPER INSTRUCTIONS
-Most users do not need to build youtube-dl and can [download the builds](http://rg3.github.io/youtube-dl/download.html) or get them from their distribution.
+Most users do not need to build youtube-dl and can [download the builds](https://ytdl-org.github.io/youtube-dl/download.html) or get them from their distribution.
To run youtube-dl as a developer, you don't need to build anything either. Simply execute
python test/test_download.py
nosetests
+See item 6 of [new extractor tutorial](#adding-support-for-a-new-site) for how to run extractor specific test cases.
+
If you want to create a build of youtube-dl yourself, you'll need
* python
After you have ensured this site is distributing its content legally, you can follow this quick list (assuming your service is called `yourextractor`):
-1. [Fork this repository](https://github.com/rg3/youtube-dl/fork)
+1. [Fork this repository](https://github.com/ytdl-org/youtube-dl/fork)
2. Check out the source code with:
git clone git@github.com:YOUR_GITHUB_USERNAME/youtube-dl.git
class YourExtractorIE(InfoExtractor):
_VALID_URL = r'https?://(?:www\.)?yourextractor\.com/watch/(?P<id>[0-9]+)'
_TEST = {
- 'url': 'http://yourextractor.com/watch/42',
+ 'url': 'https://yourextractor.com/watch/42',
'md5': 'TODO: md5 sum of the first 10241 bytes of the video file (use --test)',
'info_dict': {
'id': '42',
# TODO more properties (see youtube_dl/extractor/common.py)
}
```
-5. Add an import in [`youtube_dl/extractor/extractors.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/extractors.py).
-6. Run `python test/test_download.py TestDownload.test_YourExtractor`. This *should fail* at first, but you can continually re-run it until you're done. If you decide to add more than one test, then rename ``_TEST`` to ``_TESTS`` and make it into a list of dictionaries. The tests will then be named `TestDownload.test_YourExtractor`, `TestDownload.test_YourExtractor_1`, `TestDownload.test_YourExtractor_2`, etc.
-7. Have a look at [`youtube_dl/extractor/common.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/common.py) for possible helper methods and a [detailed description of what your extractor should and may return](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/common.py#L74-L252). Add tests and code for as many as you want.
-8. Make sure your code follows [youtube-dl coding conventions](#youtube-dl-coding-conventions) and check the code with [flake8](https://pypi.python.org/pypi/flake8). Also make sure your code works under all [Python](http://www.python.org/) versions claimed supported by youtube-dl, namely 2.6, 2.7, and 3.2+.
-9. When the tests pass, [add](http://git-scm.com/docs/git-add) the new files and [commit](http://git-scm.com/docs/git-commit) them and [push](http://git-scm.com/docs/git-push) the result, like this:
+5. Add an import in [`youtube_dl/extractor/extractors.py`](https://github.com/ytdl-org/youtube-dl/blob/master/youtube_dl/extractor/extractors.py).
+6. Run `python test/test_download.py TestDownload.test_YourExtractor`. This *should fail* at first, but you can continually re-run it until you're done. If you decide to add more than one test, then rename ``_TEST`` to ``_TESTS`` and make it into a list of dictionaries. The tests will then be named `TestDownload.test_YourExtractor`, `TestDownload.test_YourExtractor_1`, `TestDownload.test_YourExtractor_2`, etc. Note that tests with `only_matching` key in test's dict are not counted in.
+7. Have a look at [`youtube_dl/extractor/common.py`](https://github.com/ytdl-org/youtube-dl/blob/master/youtube_dl/extractor/common.py) for possible helper methods and a [detailed description of what your extractor should and may return](https://github.com/ytdl-org/youtube-dl/blob/7f41a598b3fba1bcab2817de64a08941200aa3c8/youtube_dl/extractor/common.py#L94-L303). Add tests and code for as many as you want.
+8. Make sure your code follows [youtube-dl coding conventions](#youtube-dl-coding-conventions) and check the code with [flake8](https://flake8.pycqa.org/en/latest/index.html#quickstart):
+
+ $ flake8 youtube_dl/extractor/yourextractor.py
+
+9. Make sure your code works under all [Python](https://www.python.org/) versions claimed supported by youtube-dl, namely 2.6, 2.7, and 3.2+.
+10. When the tests pass, [add](https://git-scm.com/docs/git-add) the new files and [commit](https://git-scm.com/docs/git-commit) them and [push](https://git-scm.com/docs/git-push) the result, like this:
$ git add youtube_dl/extractor/extractors.py
$ git add youtube_dl/extractor/yourextractor.py
$ git commit -m '[yourextractor] Add new extractor'
$ git push origin yourextractor
-10. Finally, [create a pull request](https://help.github.com/articles/creating-a-pull-request). We'll then review and merge it.
+11. Finally, [create a pull request](https://help.github.com/articles/creating-a-pull-request). We'll then review and merge it.
In any case, thank you very much for your contributions!
### Mandatory and optional metafields
-For extraction to work youtube-dl relies on metadata your extractor extracts and provides to youtube-dl expressed by an [information dictionary](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/common.py#L75-L257) or simply *info dict*. Only the following meta fields in the *info dict* are considered mandatory for a successful extraction process by youtube-dl:
+For extraction to work youtube-dl relies on metadata your extractor extracts and provides to youtube-dl expressed by an [information dictionary](https://github.com/ytdl-org/youtube-dl/blob/7f41a598b3fba1bcab2817de64a08941200aa3c8/youtube_dl/extractor/common.py#L94-L303) or simply *info dict*. Only the following meta fields in the *info dict* are considered mandatory for a successful extraction process by youtube-dl:
- `id` (media identifier)
- `title` (media title)
In fact only the last option is technically mandatory (i.e. if you can't figure out the download location of the media the extraction does not make any sense). But by convention youtube-dl also treats `id` and `title` as mandatory. Thus the aforementioned metafields are the critical data that the extraction does not make any sense without and if any of them fail to be extracted then the extractor is considered completely broken.
-[Any field](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/common.py#L149-L257) apart from the aforementioned ones are considered **optional**. That means that extraction should be **tolerant** to situations when sources for these fields can potentially be unavailable (even if they are always available at the moment) and **future-proof** in order not to break the extraction of general purpose mandatory fields.
+[Any field](https://github.com/ytdl-org/youtube-dl/blob/7f41a598b3fba1bcab2817de64a08941200aa3c8/youtube_dl/extractor/common.py#L188-L303) apart from the aforementioned ones are considered **optional**. That means that extraction should be **tolerant** to situations when sources for these fields can potentially be unavailable (even if they are always available at the moment) and **future-proof** in order not to break the extraction of general purpose mandatory fields.
#### Example
This code will try to extract from `meta` first and if it fails it will try extracting `og:title` from a `webpage`.
-### Make regular expressions flexible
+### Regular expressions
+
+#### Don't capture groups you don't use
+
+Capturing group must be an indication that it's used somewhere in the code. Any group that is not used must be non capturing.
+
+##### Example
+
+Don't capture id attribute name here since you can't use it for anything anyway.
+
+Correct:
+
+```python
+r'(?:id|ID)=(?P<id>\d+)'
+```
+
+Incorrect:
+```python
+r'(id|ID)=(?P<id>\d+)'
+```
+
+
+#### Make regular expressions relaxed and flexible
-When using regular expressions try to write them fuzzy and flexible.
+When using regular expressions try to write them fuzzy, relaxed and flexible, skipping insignificant parts that are more likely to change, allowing both single and double quotes for quoted values and so on.
-#### Example
+##### Example
Say you need to extract `title` from the following HTML code:
webpage, 'title', group='title')
```
-### Use safe conversion functions
+### Long lines policy
+
+There is a soft limit to keep lines of code under 80 characters long. This means it should be respected if possible and if it does not make readability and code maintenance worse.
+
+For example, you should **never** split long string literals like URLs or some other often copied entities over multiple lines to fit this limit:
-Wrap all extracted numeric data into safe functions from `utils`: `int_or_none`, `float_or_none`. Use them for string to number conversions as well.
+Correct:
+
+```python
+'https://www.youtube.com/watch?v=FqZTN594JQw&list=PLMYEtVRpaqY00V9W81Cwmzp6N6vZqfUKD4'
+```
+
+Incorrect:
+
+```python
+'https://www.youtube.com/watch?v=FqZTN594JQw&list='
+'PLMYEtVRpaqY00V9W81Cwmzp6N6vZqfUKD4'
+```
+
+### Inline values
+
+Extracting variables is acceptable for reducing code duplication and improving readability of complex expressions. However, you should avoid extracting variables used only once and moving them to opposite parts of the extractor file, which makes reading the linear flow difficult.
+
+#### Example
+
+Correct:
+
+```python
+title = self._html_search_regex(r'<title>([^<]+)</title>', webpage, 'title')
+```
+
+Incorrect:
+
+```python
+TITLE_RE = r'<title>([^<]+)</title>'
+# ...some lines of code...
+title = self._html_search_regex(TITLE_RE, webpage, 'title')
+```
+
+### Collapse fallbacks
+
+Multiple fallback values can quickly become unwieldy. Collapse multiple fallback values into a single expression via a list of patterns.
+
+#### Example
+
+Good:
+
+```python
+description = self._html_search_meta(
+ ['og:description', 'description', 'twitter:description'],
+ webpage, 'description', default=None)
+```
+
+Unwieldy:
+
+```python
+description = (
+ self._og_search_description(webpage, default=None)
+ or self._html_search_meta('description', webpage, default=None)
+ or self._html_search_meta('twitter:description', webpage, default=None))
+```
+
+Methods supporting list of patterns are: `_search_regex`, `_html_search_regex`, `_og_search_property`, `_html_search_meta`.
+
+### Trailing parentheses
+
+Always move trailing parentheses after the last argument.
+
+#### Example
+
+Correct:
+
+```python
+ lambda x: x['ResultSet']['Result'][0]['VideoUrlSet']['VideoUrl'],
+ list)
+```
+
+Incorrect:
+
+```python
+ lambda x: x['ResultSet']['Result'][0]['VideoUrlSet']['VideoUrl'],
+ list,
+)
+```
+
+### Use convenience conversion and parsing functions
+
+Wrap all extracted numeric data into safe functions from [`youtube_dl/utils.py`](https://github.com/ytdl-org/youtube-dl/blob/master/youtube_dl/utils.py): `int_or_none`, `float_or_none`. Use them for string to number conversions as well.
+
+Use `url_or_none` for safe URL processing.
+
+Use `try_get` for safe metadata extraction from parsed JSON.
+
+Use `unified_strdate` for uniform `upload_date` or any `YYYYMMDD` meta field extraction, `unified_timestamp` for uniform `timestamp` extraction, `parse_filesize` for `filesize` extraction, `parse_count` for count meta fields extraction, `parse_resolution`, `parse_duration` for `duration` extraction, `parse_age_limit` for `age_limit` extraction.
+
+Explore [`youtube_dl/utils.py`](https://github.com/ytdl-org/youtube-dl/blob/master/youtube_dl/utils.py) for more useful convenience functions.
+
+#### More examples
+
+##### Safely extract optional description from parsed JSON
+```python
+description = try_get(response, lambda x: x['result']['video'][0]['summary'], compat_str)
+```
+
+##### Safely extract more optional metadata
+```python
+video = try_get(response, lambda x: x['result']['video'][0], dict) or {}
+description = video.get('summary')
+duration = float_or_none(video.get('durationMs'), scale=1000)
+view_count = int_or_none(video.get('views'))
+```
# EMBEDDING YOUTUBE-DL
-youtube-dl makes the best effort to be a good command-line program, and thus should be callable from any programming language. If you encounter any problems parsing its output, feel free to [create a report](https://github.com/rg3/youtube-dl/issues/new).
+youtube-dl makes the best effort to be a good command-line program, and thus should be callable from any programming language. If you encounter any problems parsing its output, feel free to [create a report](https://github.com/ytdl-org/youtube-dl/issues/new).
From a Python program, you can embed youtube-dl in a more powerful fashion, like this:
ydl_opts = {}
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
- ydl.download(['http://www.youtube.com/watch?v=BaW_jenozKc'])
+ ydl.download(['https://www.youtube.com/watch?v=BaW_jenozKc'])
```
-Most likely, you'll want to use various options. For a list of options available, have a look at [`youtube_dl/YoutubeDL.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/YoutubeDL.py#L129-L279). For a start, if you want to intercept youtube-dl's output, set a `logger` object.
+Most likely, you'll want to use various options. For a list of options available, have a look at [`youtube_dl/YoutubeDL.py`](https://github.com/ytdl-org/youtube-dl/blob/3e4cedf9e8cd3157df2457df7274d0c842421945/youtube_dl/YoutubeDL.py#L137-L312). For a start, if you want to intercept youtube-dl's output, set a `logger` object.
Here's a more complete example of a program that outputs only errors (and a short message after the download is finished), and downloads/converts the video to an mp3 file:
'progress_hooks': [my_hook],
}
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
- ydl.download(['http://www.youtube.com/watch?v=BaW_jenozKc'])
+ ydl.download(['https://www.youtube.com/watch?v=BaW_jenozKc'])
```
# BUGS
-Bugs and suggestions should be reported at: <https://github.com/rg3/youtube-dl/issues>. Unless you were prompted to or there is another pertinent reason (e.g. GitHub fails to accept the bug report), please do not send bug reports via personal email. For discussions, join us in the IRC channel [#youtube-dl](irc://chat.freenode.net/#youtube-dl) on freenode ([webchat](http://webchat.freenode.net/?randomnick=1&channels=youtube-dl)).
+Bugs and suggestions should be reported at: <https://github.com/ytdl-org/youtube-dl/issues>. Unless you were prompted to or there is another pertinent reason (e.g. GitHub fails to accept the bug report), please do not send bug reports via personal email. For discussions, join us in the IRC channel [#youtube-dl](irc://chat.freenode.net/#youtube-dl) on freenode ([webchat](https://webchat.freenode.net/?randomnick=1&channels=youtube-dl)).
**Please include the full output of youtube-dl when run with `-v`**, i.e. **add** `-v` flag to **your command line**, copy the **whole** output and post it in the issue body wrapped in \`\`\` for better formatting. It should look similar to this:
```
$ youtube-dl -v <your command line>
[debug] System config: []
[debug] User config: []
-[debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
+[debug] Command-line args: [u'-v', u'https://www.youtube.com/watch?v=BaW_jenozKcj']
[debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
[debug] youtube-dl version 2015.12.06
[debug] Git HEAD: 135392e
If your server has multiple IPs or you suspect censorship, adding `--call-home` may be a good idea to get more diagnostics. If the error is `ERROR: Unable to extract ...` and you cannot reproduce it from multiple countries, add `--dump-pages` (warning: this will yield a rather large output, redirect it to the file `log.txt` by adding `>log.txt 2>&1` to your command-line) or upload the `.dump` files you get when you add `--write-pages` [somewhere](https://gist.github.com/).
-**Site support requests must contain an example URL**. An example URL is a URL you might want to download, like `http://www.youtube.com/watch?v=BaW_jenozKc`. There should be an obvious video present. Except under very special circumstances, the main page of a video service (e.g. `http://www.youtube.com/`) is *not* an example URL.
+**Site support requests must contain an example URL**. An example URL is a URL you might want to download, like `https://www.youtube.com/watch?v=BaW_jenozKc`. There should be an obvious video present. Except under very special circumstances, the main page of a video service (e.g. `https://www.youtube.com/`) is *not* an example URL.
### Are you using the latest version?
### Is the issue already documented?
-Make sure that someone has not already opened the issue you're trying to open. Search at the top of the window or browse the [GitHub Issues](https://github.com/rg3/youtube-dl/search?type=Issues) of this repository. If there is an issue, feel free to write something along the lines of "This affects me as well, with version 2015.01.01. Here is some more information on the issue: ...". While some issues may be old, a new post into them often spurs rapid activity.
+Make sure that someone has not already opened the issue you're trying to open. Search at the top of the window or browse the [GitHub Issues](https://github.com/ytdl-org/youtube-dl/search?type=Issues) of this repository. If there is an issue, feel free to write something along the lines of "This affects me as well, with version 2015.01.01. Here is some more information on the issue: ...". While some issues may be old, a new post into them often spurs rapid activity.
### Why are existing options not enough?
-Before requesting a new feature, please have a quick peek at [the list of supported options](https://github.com/rg3/youtube-dl/blob/master/README.md#options). Many feature requests are for features that actually exist already! Please, absolutely do show off your work in the issue report and detail how the existing similar options do *not* solve your problem.
+Before requesting a new feature, please have a quick peek at [the list of supported options](https://github.com/ytdl-org/youtube-dl/blob/master/README.md#options). Many feature requests are for features that actually exist already! Please, absolutely do show off your work in the issue report and detail how the existing similar options do *not* solve your problem.
### Is there enough context in your bug report?
Rapsys Git / youtubedl / blobdiff