我可否自定义输出文件名？
有用户建议自定义输入视频名字，比如给YouTube下载的视频文件名加入上传日期字串，以便于排序。
此需求于2019.09.04实现，有需要请于官网下载v0.9.2.1版本。
因思之过于小众，单独反馈于其，昨见又有用户有问，因此以文章录之。为参数设置界面不至密集，故不置选项与界面。
改配置文件。
在%appdata%\CRTubeGet\CRTubeGet.ini中，[Download]节点下，加入：
[Download]
OutputTemplate=%(upload_date)s-%(title)s-%(id)s
如此，所下载的视频，即以上传日期做为前缀，以视频id为后，格式如下：
需要注意的是，这里视频名字输出模板，不需要设置扩展名。
注，youtube-dl支持的模板格式：
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 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. 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 (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 (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 (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 -.
The current default template is %(title)s-%(id)s.%(ext)s.
