Save YouTube ad

While on the ad video, right click on the video and select Copy debug info. Paste in your notepad, then note the value of addebug_videoId.

Then you can use the github program called "youtube-dl". Use: youtube-dl command to download it, e.g.

youtube-dl https://www.youtube.com/watch?v=REPLACE_WITH_ad_debug_videoId

You can get the Id of the Ad by

• right click on the video and select "Stats for nerds"
• then you will see the Id for that Ad
• you can copy it and paste it in the url for Youtube and it will be opened as a normal video

and you can use a free downloader to download it (my recommendatin is Xtreme Download Manager)