Changing name of the video while downloading via youtube-dl

'outtmpl': 'temp/' + str(i) +'.%(ext)s' 

Sometimes I had headache to rename and sort the files based on the order.

So to add auto-numbering, use -A like,

youtube-dl https://www.youtube.com/playlist?list=PLOU2XLYxmsILe6_eGvDN3GyiodoV3qNSC -A

Or to keep playlist index,

youtube-dl -o '%(playlist_index)s. %(title)s.%(ext)s' https://www.youtube.com/playlist?list=PLOU2XLYxmsILe6_eGvDN3GyiodoV3qNSC

This will add nice numbering to the downloaded files.

And if you are downloading files which is not in playlist, you can add numbers manually to the file,

youtube-dl -o "1-%(uploader)s%(title)s.%(ext)s" https://youtu.be/862r3XS2YB0

Here I have manually added 1- to the filename while downloading.

Use youtube-dl -o '%(playlist_index)s. %(title)s.%(ext)s' https://www.youtube.com/playlist?list=....

The best solution I found is:

youtube-dl -o "%(playlist_index)s-%(title)s.%(ext)s" <playlist_link>

For example:

youtube-dl -o "%(playlist_index)s-%(title)s.%(ext)s" https://www.youtube.com/playlist?list=PLf8i4fc0zJBzLhOe6FwHpGhBDgqwInJWZ