Looking for some advice on saddle height.

I'm riding a 56cm road frame with SPD (NOT SPD-SL) pedals. I have been trying for the last 6 months or so to get my saddle height in a better place. I thought it was more or less there, until yesterday, when a friend took some photos of me riding. As they were on an iPhone, they are Live photos and I've managed to string the ones that were taken in quick successions together to create two videos.

I would really appreciate it if someone could have a look below and tell me what they think?

Many thanks in advance.