Critical fix: pin VHD_CORE_SP_BUFFER_PACKING to VHD_BUFPACK_VIDEO_YUV422_8 on line 605.
Without this, SDK default delivers buffers with wrong stride → screen tearing ("bendy and squeevy" picture).
Also includes: SDI Interface propagation, F_SETPIPE_SZ 8MB/1MB FIFOs, per-port telemetry logging.