Xbox One Achievement recording will be up to devs
Microsoft's Albert Penello has taken to the internet to clarify the functionality of the Xbox One's DVR.
It has been reported that the DVR would automatically record all of a player's achievements as they are unlocked. It appears that this is not strictly true.
“It won’t be automatic for every Achievement,” Penello stated on NeoGAF. “It’s a feature that Developers can unlock for achievements, OR, for instance, have hidden in the game for doing something cool or discovering something hidden. Basically we allow developers access to GameDVR and they can put conditions on an automatic recording. But not every Achievement will automatically be recorded.”
It still technically does record all Achievements in the ring buffer on the Xbox One's HDD giving players the choice to share them anyway.