Get number of videos in a Playlist?

[edumj]

Hi,

I'm writing a batch file to auto download videos just copying url to clipborad, but I need to know how many videos are in one playlist to make a loop (i'm making a loop to get video %(height)s for each video and save to a file to compare with the real height).

I've seen in the json file, that it's stored in the "n_entries" var.

Could you add a "--playlist-n_entries" option, or a "%(playlist_n_entries)s" output?

Thanks!

[jaimeMF]

I don't know if this is what you want, but you can use jq for that:
youtube-dl "https://www.youtube.com/playlist?list=PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re" -J --flat-playlist | jq ".entries | length" will print 3.

If that's now what you want, could you explain how do you want to get the length?

[edumj]

Thanks, it Works!

But, because I don't know how to save the resolution of a video into a variable, I do ths:
youtube-dl.exe "%var_link%" -o "%%(height)s" --get-filename>%ruta_altura%
And I get a text file with the height in it, and then I load this into the var.
If there were an option to get directly the num of entries, I wolud get the num of videos the same way (I supose I have to do the same with jq), and It wouldn't be necessary to add another .exe to my project. Anyway, this jq program seems helpful, if I learn how it Works ;-)

Edu.

[blueray453]

youtube-dl "https://www.youtube.com/playlist?list=PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re" --flat-playlist --playlist-end 1

The output has the following string -

Collected N video ids

This N is the number of videos in that playlist.