It didn't capture what happened before Floyd ended up on the ground (at least in the version I saw)

So what happened before the clip that justified the officer to murder Floyd by keeping his leg on his neck?

Watch it yourself. I doubt you'd believe anything I say.

I have an open mind, what do you want to say?

Just watch both videos, in full, without interruptions. The prosecutor has released both official body cam videos and they're both ~30 min in length.

If you're not willing to do the basic ground work, we can't have a reasonable discussion about what happened.

I watched it.

Now how does that justify the officer to murder Floyd by keeping his leg on his neck?

Nobody has been found guilty of murder yet.

my bad, it should have been "alleged murder"