with long playlists index number is off

[splace]

Bug Description
download just the last few of long playlist gives index number different to Youtube's

(https://www.youtube.com/playlist?list=PLsY30fLfDNuIUJDBusf0cKVPKVQIig75_)

this playlist gives indexes 3 (more than) too youtube.

[aandrew-me]

I have added something which I think should fix it, check in next update if it has been fixed

[aandrew-me]

Check in the latest update