I have no idea but there's enough continuous footage to clearly establish that a conversation about a specific thing took place which was the entire point.
The conversations were pretty specific AND the points of which were repeated at different times by different individuals, ie corroboration.
If it was manufactured then how come so many people were all saying the same thing?
Plus both of the high ranking people were both fired after the fact.
If it was a pure edit job to change the intent, such as with oh lets say Trayvon's 911 tapes for example, then why fire those men?
And saying known criminal paid by trump refuses to release is sophistry to detract from what you can actually see in those interviews.