This appendix describes Audio Video (AV) pattern generator (av_pat_gen), Video Frame CRC (video_frame_crc) and AXI4S Video Re-mapper (v_axi4s_remapper) helper cores. Helper cores are IPs that are not part of Vivado IP catalog but only available in the as part of example design. They are not supported outside the original example design context. Users are expected to design their own IPs in their designs.