No it isn't unless it's signed for. Even if a video / photo is taken that doesn't prove the person taking the photo took the package afterwards.
I had several packages delivered which were "signed" for by someone named "through the letterbox". Similarly, one package said dropped off at the door/porch but no sign of it so I asked for a refund as I assumed it's been stolen... 2 days later my neighbour gives it to me because it was actually delivered to them, but the delivery person couldn't select the proper option to let me know so I had no idea.