Hi Etienne,
To download a video from Youtube you can use a program like "A tube Catcher" link: https: //www.atube.me/
(Important: During installation skip you additional programs you do not want). Start the program, copy and paste the video URL, choose which video you want to save (HI or LO resolution) and start the download. Unfortunately it is not possible to save subtitles as well ...
Pietro
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