youtube-dl 获取频道/播放列表名称并将其传递给 bash 一行脚本

Question

我正在尝试下载整个 Youtube 频道并且成功了。

但是我的目录名称如下所示，因此我需要手动更改所有名称。

我需要一种方法来将频道/播放列表名称和 ID 传递给脚本，而不是获取 url。

我使用的脚本：

# get working/beginning directory
l=$(pwd);
clear;
# get playlists data from channel list
youtube-dl -j --flat-playlist \
  "https://www.youtube.com/channel/UC-QDfvrRIDB6F0bIO4I4HkQ/playlists" \
  |cut -d ' ' -f4 \
  |cut -c 2-73 \
  |while IFS= read -r line;
  do;
    # loop: do with every playlist link
    # make a directory named by the playlist identifier in url
    mkdir ${line:38:80};
    # change directory to new directory
    cd $l/${line:38:80};
    # download playlist
    youtube-dl -f mp4 "$line";
    # print playlist absolute dir to user
    pwd;
    # change directory to beginning directory
    cd $l;
  done;

目录名称：

.
├── PLxl69kCRkiI0oIqgQW3gWjDfI-e7ooTUF
├── PLxl69kCRkiI0q0Ib8lm3ZJsG3HltLQDuQ
├── PLxl69kCRkiI1Ebm-yvZyUKnfoi6VVNdQ7
├── ...
└── PLxl69kCRkiI3u-k02uTpu7z4wzYLOE3sq

这不起作用：

https://github.com/ytdl-org/youtube-dl/issues/23442

# any playlist is seen as private
youtube-dl -J \
  https://m.youtube.com/playlist?list=PL3GeP3YLZn5jOiHM8Js1_S0p_5HeS7TbY \
  | jq -r '.title'

How to use youtube-dl from a python program?

我需要它用于 bash 脚本而不是 python

编辑：简单解释

如何从 bash youtube-dl 获取频道名称并将其替换为此脚本中文件名的列表 ID

Answer 1

考虑以下几点：

#!/usr/bin/env bash

# if we don't delete slashes from titles there are serious security issues here
slash=/

# note that this url, being in quotes, needs no backslash escaping.
url='https://www.youtube.com/playlist?list=PLXmMXHVSvS-CoYS177-UvMAQYRfL3fBtX'

# First, get the name for the whole playlist
playlist_title=$(youtube-dl -J --flat-playlist "$url" | jq -r .title) || exit

# ...and, for the rest of the script, work under a directory named by that title
mkdir -p -- "${playlist_title//$slash/}" || exit
cd "${playlist_title//$slash/}" || exit

# Finally, loop over the individual videos and download them one at a time.
# ...arguably, you could tell youtube-dl to do this itself; call it an exercise.
youtube-dl -j --flat-playlist "$url" |   # one JSON document per playlist entry
  jq -r '[.id, .title] | @tsv' |         # write id, then title, tab-separated
  while IFS=$'\t' read -r id title; do ( # read that id and title from jq
      # because of the ()s, this is a subshell; exits just go to the next item
      # ...which is also why exec doesn't end the entire script.
      dir=${title//$slash/} # take slashes out of the title to form directory
      mkdir -p -- "$dir" || exit
      cd -- "$dir" || exit  # if cd fails, do not download anything
      exec youtube-dl "$id" # exec is a minor perf optimization; consume subshell
  ); done

注：

我们正在使用 jq 将 JSON 转换为更 safely-readable 的格式，我们可以在没有字节偏移的情况下进行解析。
多余的反斜杠已从 URL 中删除，以防止问题评论中描述的 404 错误。
将循环的 body 放在带括号的子 shell 中意味着当退出括号部分时，该子 shell 中的 cd 会自动反转。
我们不相信标题不包含斜线 -- 您不需要有人为他们的视频命名 /etc/sudoers.d/hi-there 或以其他方式将文件放在 arbitrarily-chosen 位置。
请注意 "$dir" 而不是 $dir。这很重要；参见 shellcheck warning SC2086。

youtube-dl 获取频道/播放列表名称并将其传递给 bash 一行脚本

youtube-dl get channel / playlist name and pass it to bash one line script

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