The power of FPGA's is their flexibility, not their pure performance. Dedicated, fixed silicon will outperform FPGA's in performance and energy use practically

The power of FPGA's is their flexibility, not their pure performance. Dedicated, fixed silicon will outperform FPGA's in performance and energy use practically every time. For rare/uncommon use cases, having an FPGA you can adapt to your algorithm is fantastic, but for a use case as common and day-to-day as decoding video, a dedicated chip is far more ideal.