nx_vcodec_speed_bench.nx

nx_vcodec_speed_bench.nx -- the GO/NO-GO number for wiring the sovereign video codec into the live room (operator: "way more than 20fps"; the measured edge fan-out ceiling is ~1.1MB/s, so 60fps x 7 receivers needs SMALL frames = this codec's P-frames). Encodes a keyframe + 30 P-frames of talking- head-like content at call resolution 320x224, timing ENCODE and DECODE per frame, PLUS RGB-PSNR of the decoded output vs the raw source (speed claims must carry their quality cost -- no false positives). TWO PASSES measure the QP-DERIVED SKIP THRESHOLD trade discovered by the 2026-07-03 stage profile (280/280 blocks failed skip at thresh=64: quantization noise on a STATIC block is ~QP*avg-err*256 SAD, so the tight threshold ran full ME+qpel+DCT on every block every frame): PASS A: sad_thresh=64 (the old always-code baseline) PASS B: sad_thresh=QP*128 (QP-derived: tolerates quant noise, catches real motion) -- encoder-side ONLY (the skip flag already exists in the bitstream; decoders are agnostic). Ledger-reported (return-and-report). expect_exit: 0 = measurement sound. license_tier: ORIGINAL