Is there a way to download all video descriptions from my videos? Or at least to list them?
I need to make a copy of all the descriptions of more than 100 videos. Copy and pasting each one by hand seems to be a Sisyphean task.
Maybe someone knows a way to do this with their API, or a webservice that can help out?
It indeed is possible via the API. You need your userId for this, you can get it via https://www.youtube.com/account_advanced.
What you then want to do in the API is call playlistItems.list, with part=snippet and playlistId=UUuserId (note: the UU is not a typo, it's the "type indicator" of the playlist) and maxresults and pagetoken set appropriately.
