I'm pretty sure I did some basic translations of that the relevant parts of that video around the time it was first posted online, but you'd have to look through my post history, and it would likely be a pain.
Anyways, basically, he stumbles over himself a bit in the beginning talking about how's he's nervous and not sure about the right way of making the announcement because of the sensitivity around the issue (some people, myself included, first assumed this was a statement on the sensitivity of FFVIIR being brought in-house, however on a second viewing an given his follow up comments, it's apparent he is more likely refering to how fans of Mobius might react to him shifting his main focus from Mobius to FFVIIR. He makes multiple apologies and reassurance in this regard), and then simply goes on to state that, as people know, the remake was originally being outsourced, but because (in order to increase quality, and meet schedules more readily) it was decided to bring it in-house, he was asked to become the project lead for the game.
What this essentially means is that FFVIIR was originally being primarily developed by CC2, and that the development has now shifted to be primarily happening internally at SE, with Naoki Hamaguchi serving as project lead.
As I've said before, and given what I know from my contacts and experience in the industry, it seems almost without question that the approach taken with FFVIIR is very similar to say the way companies like Mistwalker has handled their projects in the past in its forrays with Nintendo and Microsoft.
Initally, almost the entire development happened over at CC2, with the core design and directorial team being over at SE providing directives, and hashing out the particulars with the project lead(s) over at CC2 remotely (Mistwalker worked in-house with both MS and Nintendo, but the corporate structure was the same - a "design team"; director, creative leads, writers etc.., and a development/production teams underneath; project lead, programmers, 3d modellers and animators etc.).
Then for reasons we can only speculate about, though strongly hinted at being creative differences and logistical problems surrounding the remote approach, on top of an initial plan of a speedy release, SE decided to development itself in-house, and build its own production team (hence the appointment of a local project lead with Naoki Hamaguchi).
In any case, it's important to realize there's a very big distinction between saying a game "is being outsourced" in an outright manner like this, and a game outsourcing work.
Almost all big AAA games outsource some portion of their, or bring in outside contractors. Not only does this go largely without saying, noone in the industry refers to this, or thinks of this as "outsourcing your game" more generally. Outsourcing your game literally means exactly that - having a off-sight or outside-company production team handle most of the development and production of assets, code and systems.
CC2 was doing this, and is no longer doing this.
It's impossible to say whether CC2 is involved at all anymore, though they must have been to some extent until all the project data etc. was brought in-house, unless SE decided to just scrap it all. They are however no longer meaningfully involved in the brunt of development, because if they were, SE would not need to build and bulk an internal developement team, nor appoint a project lead for it, as CC2 would already have that set up working on the game.
When we talk of "bringing a project in-house" or "outsourcing a project" we are not talking about minor or selective work-tasks - we are talking about the core workforce doing the vast majority of the leg-work of the game.
So CC2 was not just a collaboration partner doing some assets and scenes etc. like you might think of any of SE's minor collaborates that pitch in during tight spots on games like FFXV or FFXIII, they were the actual developers of the remake in the beginning.
They no longer are. Take that as it may.
Personally I lean towards them being totally cut loose, since 1.) we haven't heard anything about CC2's involvement since the split, and CC2 don't seem to be hiring or signaling any involement on the project on their end, and 2.) there just doesn't seem to be any need to rely on them given all of the other available subsidiary collaborators that SE can rely on for production that would come with less strings attached and at a lower cost - to not even speak of the fact that SE is wrapping up almost all their other work intensive projects in near future.