Hello,
Although using generics works, this is not the only solutions, you could also
use explicit casting, like that :
var myVideo = TVideo()
var myVideoList = @[myVideo]
setNewDims(cast[seq[TMedia]](myVideoList))
Run
If you use generics, it can be a good practice to restrain your usage:
proc setNewDims[T: TMedia](arr: seq[T])
Run
However, I don't know in that case if generics or explicit casting is better. I
tend to use explicit casting (And I think it is a shame the compiler can't do
implicit casting in that case, but maybe it's in the todo list)
