如何使用youtube-dl下载以获取video标题作为文件名？
如何下载当前文件以显示原始标题？ 当我下载总是像P9pzm5b6Fxx.mp4 ，当标题是Tigerking 。
如何设置它以便下载为tigerking.mp4 ？
来自man youtube-dl ：
-o, --output TEMPLATE Output filename template. Use %(title)s to get the title, %(uploader)s for the uploader name, %(uploader_id)s for the uploader nickname if different, %(autonumber)s to get an automatically incremented number, %(ext)s for the filename extension, %(format)s for the format description (like "22 - 1280x720" or "HD"), %(format_id)s for the unique id of the format (like YouTube's itags: "137"), %(upload_date)s for the upload date (YYYYMMDD), %(extractor)s for the provider (youtube, metacafe, etc), %(id)s for the video id, %(playlist_title)s, %(playlist_id)s, or %(playlist)s (=title if present, ID otherwise) for the playlist the video is in, %(playlist_index)s for the position in the playlist. %(height)s and %(width)s for the width and height of the video format. %(resolution)s for a textual description of the resolution of the video format. %% for a literal percent. Use - to output to stdout. Can also be used to download to a different directory, for example with -o '/my/downloads/%(uploader)s /%(title)s-%(id)s.%(ext)s' .
所以，大概是：
youtube-dl -o '%(title)s.%(ext)s'