Hi
Dattaz, a volunteer developer, has developed a python script to quickly build a ZIM file from a Youtube Channel or Playlist. The code is here: https://sourceforge.net/p/kiwix/other/ci/master/tree/youtube/
His work was inspired by our ZIM export of the TED talks and allows us to make off-line versions of a large collections of videos.
We have already created a few demo files with youtube2zim: * http://download.kiwix.org/zim/other/bil-tunisia_ar_all_2015-03.zim * http://download.kiwix.org/zim/other/deus-ex-silicium_fr_all_2015-03.zim * http://download.kiwix.org/zim/other/universcience-tv_fr_all_2015-03.zim
We have also a few improvements in view: like adding the support of Dailymotion or recreate the playlists in case of a whole channel snasphost.
Wikimedia Commons is unfortunately still not well recognised as a platform to host videos. However, we have a project to make a ZIM file of the best Commons pictures. If you are interested please subscribe and/or award a token on this blocking task: https://phabricator.wikimedia.org/T87571
Thanks again to Dattaz for this really useful work.
Kind regards Emmanuel