NDI Encoding Support Matrix

Codec	SpeedHQ0 4:2:0	SpeedHQ2 4:2:2	SpeedHQ7 4:2:2:4	HX (v1) H.264 4:2:0	HX (v2) H.264 4:2:0	HX (v2) H.265 4:2:0	HX3 H.264 4:2:0	HX3 H.265 4:2:0
FPGA Encoding²	YES	YES	NO	NO	NO	NO	NO	NO
FPGA Decoding	YES	YES	YES	NO	NO	NO	NO	NO
Hardware Video Encoder (VCU)	NO	NO	NO	YES	YES	YES	YES	YES
Hardware Video Decoder	NO	NO	NO	*	YES	YES	YES	YES
Software Encoding	YES	YES	YES	NO
Software E	YES	YES	YES

The FPGA implementations include a SpeedHQ codec in the FPGA fabric for speed, but can also use the same software codec as the regular SDK. Typically, the ARM CPU cores on the FPGA+SoC devices are slow enough that decoding video in software is impractical, but this is gradually changing as everything gets faster. (Charles Steinkuehler)