Duplicate check

[pieotr]

its possible to add the same vido twice to dowload list, its not really bad, but there shuld be some sort of warning i think, to chech if this link is already on the list to download and if user is sure to add it second time as sepereate instance.

[pieotr]

That's great, can you also add a button to load size of all videos to download, instead having to do them one by one?

[StefanLobbenmeier]

With the sizes I will do you one better, v3 retrieves the size instantly and updates it instantly whenever a different format is selected