I'm not sure you're aware, but this video has massively sped up the original recordings. It seems irregularly, too, like humans walking are only sped up about 2x, while the machines themselves more like 4x. Of course they had to cut the sound. I saw some (presumed) original recordings a while ago, and found the machines impressive, there was no need to speed it up.

That's awesome...what a massive productivity jump from manual pruning. Requires a pretty expensive and modern tractor though.