need help searching for a addon

[synthesispandabot]

https://www.youtube.com/watch?v=hY08xDhH16M&index=23&list=UUZcFhsqLwPJciMuLFwUp1kA
specifically in the first few seconds of this video.
i've used it before but i don't know what i should search to get the topic.

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[synthesispandabot]

oops, found it
its called dynamic fov on the rtb archives