Minecraft texture package?

I watched the YouTube episodes of LarsLP "Minecraft for beginners". The youtuber has installed a cool texture package, with shadow, a round sun light blue water and the foliage of the trees is moving. The sky looks natural too, but the look of the objects and blocks is normal. In short, only the visual appearance of the world has changed. I want to know what texture package he installed to get me the same thing. Just watch an episode of that.

This is a shader (only works on fast pc's)

This is a shader. You can install shaders with Optifine

This is a shader, not a texture packet