Content aggregation examples for Library in a Box and Tambayayong eLibrary System (TeLS).
Download all high-quality TED Talks videos using aria2 and metalinks.
aria2c http://metated.petarmaric.com/metalinks/TED-talks-grouped-by-publishing-year-in-high-quality.en.metalink
With the resulting files, you may generate the html code for user navigation purposes.
tree -H baseHREF >> index.html
You may, however, still have to clean parts of out the output code.
Download using youtube-dl. See also this. Sample playlist here: A History of Philosophy
youtube# youtube-dl -i -f mp4 --yes-playlist https://www.youtube.com/watch?v=Yat0ZKduW18&list=PL9GwT4_YRZdBf9nIUHs0zjrnUVl-KBNSM
From there, general index using the tree command (as shown above).