NAME

WWW::YouTube::Download - WWW::YouTube::Download - Very simple YouTube video download interface

VERSION

version 0.65

SYNOPSIS

use WWW::YouTube::Download;

my $client = WWW::YouTube::Download->new;
$client->download($video_id);

my $video_url = $client->get_video_url($video_id);
my $title     = $client->get_title($video_id);     # maybe encoded utf8 string.
my $fmt       = $client->get_fmt($video_id);       # maybe highest quality.
my $suffix    = $client->get_suffix($video_id);    # maybe highest quality file suffix

DESCRIPTION

WWW::YouTube::Download is a library to download videos from YouTube. It relies entirely on scraping a video's webpage and does not use YT's /get_video_info URL space.

METHODS

new()
```
  $client = WWW::YouTube::Download->new;
```
Creates a WWW::YouTube::Download instance.
download($video_id [, \%args])
```
  $client->download($video_id);
  $client->download($video_id, {
      fmt      => 37,
      filename => 'sample.mp4', # save file name
  });
  $client->download($video_id, {
      filename => '{title}.{suffix}', # maybe `video_title.mp4`
  });
  $client->download($video_id, {
      cb => \&callback,
  });
```
Download the video file. The first parameter is passed to YouTube video url.

Allowed arguments:
- cb
  
  Set a callback subroutine, SEE LWP::UserAgent ':content_cb' for details.
- filename
  
  Set the filename, possibly using placeholders to be filled with information gathered about the video.
  
  filename supported format placeholders:
```
  {video_id}
  {title}
  {user}
  {fmt}
  {suffix}
  {resolution}
```
  Output filename is set to {video_id}.{suffix} by default.
- file_name
  
  DEPRECATED alternative for filename.
- fmt
  
  set the format to download. Defaults to the best video quality (inferred by the available resolutions).
playback_url($video_id, [, \%args])
```
  $client->playback_url($video_id);
  $client->playback_url($video_id, { fmt => 37 });
```
Return playback URL of the video. This is direct link to the movie file. Function supports only "fmt" option.
prepare_download($video_id)

Gather data about the video. A hash reference is returned, with the following keys:
- fmt
  
  the default, suggested format. It is inferred by selecting the alternative with the highest resolution.
- fmt_list
  
  the list of available formats, as an array reference.
- suffix
  
  the filename extension associated to the default format (see fmt above).
- title
  
  the title of the video
- user
  
  the YouTube user owning the video
- video_id
  
  the video identifier
- video_url
  
  the URL of the video associated to the default format (see fmt above).
- video_url_map
  
  an hash reference containing details about all available formats.
The video_url_map has one key/value pair for each available format, where the key is the format identifier (can be used as fmt parameter for "download", for example) and the value is a hash reference with the following data:
- fmt
  
  the format specifier, that can be passed to "download"
- resolution
  
  the resolution as width_x_height
- suffix
  
  the suffix, providing a hint about the video format (e.g. webm, flv, ...)
- url
  
  the URL where the video can be found

ua([$ua])

  $self->ua->agent();
  $self->ua($LWP_LIKE_OBJECT);

Sets and gets LWP::UserAgent object.

video_id($url)

Parses given URL and returns video ID.
playlist_id($url)

Parses given URL and returns playlist ID.
user_id($url)

Parses given URL and returns YouTube username.
get_video_id($video_id)
get_video_url($video_id)
get_title($video_id)
get_user($video_id)
get_fmt($video_id)
get_fmt_list($video_id)
get_suffix($video_id)
playlist($id,$ref)

Fetches a playlist and returns a ref to an array of hashes, where each hash represents a video from the playlist with youtube id, runtime in seconds and title. On playlists with many videos, the method iteratively downloads pages until the playlist is complete.

Optionally accepts a second argument, a hashref of options. Currently, you can pass a "limit" value to stop downloading of subsequent pages on larger playlists after x-amount of fetches (a limit of fetches, not playlist items). For example, pass 1 to only download the first page of videos from a playlist in order to "skim" the "tip" of new videos in a playlist. YouTube currently returns 100 videos at max per page.

This method is used by the youtube-playlists.pl script.

CONTRIBUTORS

yusukebe

BUG REPORTING

Please use github issues: https://github.com/xaicron/p5-www-youtube-download/issues.

AUTHOR

xaicron <xaicron {@} cpan.org>

COPYRIGHT AND LICENSE

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

xaicron/p5-www-youtube-download