xml - 如何在VLC的播放列表窗口中显示嵌套条目？

Question

根据https://wiki.videolan.org/XSPF/，应该可以在播放列表窗口中显示嵌套条目。在下面的示例中，我希望有一棵像

Playlist
`- DLF
   |- Deutschlandfunk
   |- Deutschlandfunk Kultur
   `- Deutschlandfunk Nova 

但我明白了

Playlist
|- Deutschlandfunk
|- Deutschlandfunk Kultur
 `- Deutschlandfunk Nova 

示例文件：

<?xml version="1.0" encoding="UTF-8"?>
<playlist xmlns="http://xspf.org/ns/0/" xmlns:vlc="http://www.videolan.org/vlc/playlist/ns/0/" version="1">
  <title>Internetradios</title>
  <trackList>
    <track>
      <title>Deutschlandfunk</title>
      <location>http://st01.dlf.de/dlf/01/128/mp3/stream.mp3</location>
      <album>DLF</album>
      <extension application="http://www.videolan.org/vlc/playlist/0">
        <vlc:id>0</vlc:id>
      </extension>
    </track>
    <track>
      <title>Deutschlandfunk Kultur</title>
      <location>http://st02.dlf.de/dlf/02/128/mp3/stream.mp3</location>
      <album>DLF</album>
      <extension application="http://www.videolan.org/vlc/playlist/0">
        <vlc:id>1</vlc:id>
      </extension>
    </track>
    <track>
      <title>Deutschlandfunk Nova</title>
      <location>http://st03.dlf.de/dlf/03/128/mp3/stream.mp3</location>
      <album>DLF</album>
      <extension application="http://www.videolan.org/vlc/playlist/0">
        <vlc:id>2</vlc:id>
      </extension>
    </track>
  </trackList>
  <extension application="http://www.videolan.org/vlc/playlist/0">
    <vlc:node title="DLF">
      <vlc:item tid="0"/>
      <vlc:item tid="1"/>
      <vlc:item tid="2"/>
    </vlc:node>
  </extension>
</playlist>

一些提示？

Answer 1

从version标记中删除playlist属性；所以代替：

<playlist xmlns="http://xspf.org/ns/0/" xmlns:vlc="http://www.videolan.org/vlc/playlist/ns/0/" version="1">

仅使用：

<playlist xmlns="http://xspf.org/ns/0/" xmlns:vlc="http://www.videolan.org/vlc/playlist/ns/0/">

希望这可以帮助。