Move YouTube Videos From "Watch Later" To A New Playlist

moveYoutubeWatchLaterVideosToNewPlaylist.js

// Move YouTube Videos From "Watch Later" To A New Playlist.

setInterval(function () {

  // define name of playlist to move videos to
  const newPlaylistName = 'old watch later';

  // 1) grab the first video entry
  const video = document.querySelector('ytd-playlist-video-renderer');
  if (!video) return;

  // helper to open that video's action menu
  function openMenu(cb) {
    const btn = video.querySelector('ytd-menu-renderer yt-icon-button');
    if (!btn) return console.warn('No action button');
    btn.click();
    setTimeout(cb, 400);
  }

  // 2) open menu & click “Save to…”
  openMenu(() => {
    const items = Array.from(document.querySelectorAll('ytd-menu-service-item-renderer'));
    const saveItem = items.find(el =>
      el.innerText.trim().toLowerCase().startsWith('save to')
    );
    if (!saveItem) {
      console.warn('“Save to…” not found:', items.map(el => el.innerText));
      return;
    }
    saveItem.click();

    // 3) wait for dialog, click to add to new specified playlist
    setTimeout(() => {
      const option = Array.from(document.querySelectorAll('yt-formatted-string'))
        .find(el => el.innerText.trim().toLowerCase() === newPlaylistName);
      if (!option) {
        console.warn('Playlist “' + newPlaylistName + '” not found');
      } else {
        option.click();
      }

      // 4) close save dialog
      document.dispatchEvent(new KeyboardEvent('keydown', { key: 'Escape' }));

      // 5) after a short pause, re-open menu & click “Remove from Watch later”
      setTimeout(() => {
        openMenu(() => {
          const remItems = Array.from(document.querySelectorAll('ytd-menu-service-item-renderer'));
          const removeItem = remItems.find(el =>
            el.innerText.trim().toLowerCase().includes('remove from watch later')
          );
          if (!removeItem) {
            console.warn('“Remove from Watch later” not found:', remItems.map(el => el.innerText));
          } else {
            removeItem.click();
          }
        });
      }, 500);

    }, 500);
  });

}, 500);