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Nishi Compare · capabilities, evidence and delivery

Video Codec Engine

Compare capabilities and delivery evidence. Source discovery, qualification, deployment and accepted outcomes are separate; an open contract names work still to verify.

How the Nishi compression engine measures up -- Nishi vs x264 and x265 and SVT-AV1 and DCVC-FM (neural)

Overview

The purpose, declared position and evidence coverage of this domain. Source presence and completed acceptance are different measures.

Where we are. Measured 2026-08-19. A real H.264-class sovereign codec is live in two measured profiles with range coding, quarter-pel motion, RD-selected partitions, in-loop deblock, real-bit RDO over skip and transform, and structural exceeds (integer-deterministic bit-exact everywhere, one codec on three surfaces). The gap to the majors is second-generation architecture (modes and partitions RDO, larger transforms, B-pyramid) and the learned loop (a post-filter that fires, hyperprior, an end-to-end neural codec, perceptual coding). The live resolution ceiling is tracked on /compare/video.

Where we need to go. Close the second-generation architecture gap with every rung measured on the MSU set against the 822 baseline and never negative on any sequence, then the learned loop in integer inference, then the neural frontier -- keeping bit-exact determinism as the exceed the float codecs cannot match.

The unit. 1 u = one measured session-leg. Calibration from landed rungs: the mangagen panel compositor went from existing substrate to shipped and live-verified in ONE leg (2026-08-13); the citations rung went from 3 to 55 domains in one leg across seven seats (2026-08-18); a greenfield engine with a bite-proven gate has measured 2 to 4 legs. Estimates recalibrate as rungs land and PR7 actuals write back.
Cost to second-generation architecture: 6.5 u. Through M0.
Cost to the learned loop: 10.5 u. Through M1.
Cost to the neural frontier: 18.5 u. Everything below.

Latest recorded release

No valid dated release entry is recorded for this domain.

Release entries describe recorded changes; they do not establish that every capability passed evaluation.

15 of 22 capability source symbols found|3 of them authored stronger-claims|7 open|coverage 681/1000|adoption 8 full / 7 partial

Evidence profile — what the gaps on this board actually are

Measured by nx_swcompare_evidence, read back by nx_evprofile_lib. Every figure is a count with its denominator — there is deliberately no score, no grade and no percentage anywhere in this band, because a stored scalar is a field a seat can edit and a counted partition is not.

evidence|grounded 15/15|unsupported 0|gates green 4/5|proven able to fail 3/5|never bitten 2|green at 0/0 0|open gaps 7|of them unnamed 0|of them proof withheld 0|flips ready 0

proven able to fail counts the gates that have a RECORDED RED — nx_gate_bite mutated the gate subject, rebuilt it, watched the gate go red, and that record is inside the shared TTL. never bitten is its complement over the same denominator: those gates ran and were green, and nothing has ever shown them able to detect anything, so their green is a statement about this run and not about the gate. green at 0/0 is a separate and much weaker observation — the gate printed GREEN on a zero denominator, so its own tooth counter says it examined nothing. A gate can be green, non-zero, and still never bitten; that is the common case and it is now visible instead of implied.

partition: grounded + unsupported = 15 vs present 15 · named + unnamed + withheld = 7 vs open 7 · both reconcile

liar-kill conj=GPqN · first failing conjunct: quorum

graded document: BUILDROOT tree, 11619 bytes · gates map: PRIMARY · stamped 0d 16h ago · source ../knowledge/status/evstamp_videocodec.verdict

Gap classWhat it is, and the work it names
GATE-FAILINGA declared gate ran and was not GREEN. The remedy is to FIX the gate it names. This is deliberately NOT merged with CLAIM-ONLY: one needs a gate written and the other needs a gate repaired, and a single merged number sends a seat at the wrong work.
This band reports the referee counts. The per-axis worklist rows — which axis is unsupported, which watch is ready to flip, which gap is unnamed — are printed by nx_swcompare_evidence videocodec itself and are not carried on the stamp, so this page names the classes and the producer names the rows. That split is stated rather than hidden: a count without a worklist is not actionable, and this band is honest about which half of that it is.

Production map

Follow the dependencies, declared acceptance criteria and recorded priorities. Inspect source binding before treating a rank as executable work.

Ranking source binding: STALE_OR_INVALID_BINDING. Recorded priorities require current acceptance evidence and resource checks before execution.

Recorded ranking withheld

Retained ranking is not bound to the current plan and matrix: STALE_OR_INVALID_BINDING. Historical data remains retained. Refresh the ranking after resolving the input differences. Latest execution outcome is unverified.

Declared roadmap — contract, acceptance, executor, effort

RungCloses withDefinition of done (pre-declared)ExecutorEst.
Full-mode RDO (R0)vc_rdo_modesIntra modes and inter partitions trial-coded through the real range-coder cost like skip and transform already are; BD-rate on the MSU four-sequence set vs the 822 baseline never negative on any sequence; encode fps above the RTC tier floorOrgan1.5 u
Larger transforms (R1)vt_dct1616x16 and 32x32 integer transforms with RD selection beside 4x4 and 8x8; bit-exact decode; BD-rate measured on flat content where the gain livesOrgan2 u
B-frames and hierarchical GOP (R2)
after R0		vb_encodeBi-prediction with a B-pyramid under the existing reference model; decoder bit-exact; BD-rate gain measured per sequence; latency profile kept out of the RTC default by dataOrgan3 u
Post-filter trained to fire (R3)vc_nf_trainA training run over banked frames produces a table that measurably fires; BD-rate improves on the set; a table that changes nothing is refused, not shippedLocal model1.5 u
Learned entropy hyperprior (R4)
after R3		ne_modelA trained model over learned features (not DCT coefficients, which the measurement already showed near-optimal) with integer inference; bits per pixel vs the hand context coder publishedLocal model2.5 u
End-to-end neural codec (R5)
after R4		nc_codecA DCVC-class learned codec in integer inference running on the wasm path; BD-rate vs our classical codec and vs x265 on the set; speed axis published beside itLocal model4 u
Perceptual and generative coding (R6)
after R5		pc_genGenerative reconstruction at very low rate judged by the no-reference critic and a full-reference metric; a recon that hallucinates content fails the faithfulness toothLocal model4 u

Milestones

MilestoneRungsCumulative
M0 · Second-generation architectureR0,R1,R26.5 u
M1 · Learned loopR3,R410.5 u
M2 · Neural frontierR5,R618.5 u
Ladder verdict. NOT DECLARED. This board names no dated best-in-class or frontier target and no rung roles (sotatarget and rungrole rows on its plan); the ranker labels it NO-LADDER until it does, and until then its rungs climb toward a target nobody has written down. Bars read NO-BAR against the current month 2026-10.
Bar freshness, counted
ClassCountNote
bars0sotabar rows on the plan
fresh0the bar month is the current month
attested0an older bar with a this-month barscan reporting no newer entry
stale0a this-month scan saw a newer month the bar ignores
unattested0nobody looked this month
malformed0a sotabar row missing a field
duplicate0bar ids an earlier row already carries
bars, summed0RECONCILED: the parts sum to the total 0
current month2026-10the month every bar is judged against
Treatment verdict. NOT DECLARED. No rung on this board declares its three-step treatment (a treat row naming the MCP row, the API route, the primitive it composes, the workflow that composes it and the agent beat that runs it); the ranker labels every rung TREATMENT-UNDECLARED until it does.

Inspect a rung and its prerequisites

Declared nodes 7. Rank input binding: STALE_OR_INVALID_BINDING. Dependency order is authored. Implementation, acceptance evidence, authority and resource readiness are unverified. No action is recommended or dispatched here.

Plan SHA-256 a8295e451c3297120db0218295609003661740b15845d7ba1e93a46b312823aa. Target rows 0; role rows 0. Existing risks and release worklog retain their own scope; no node completion is inferred.

Runtime observation coverage: 0 of 7 rungs have current, identity-bound execution observations. Observation may report RED. Accepted completion remains unknown; source presence, qualification and deployment do not establish it.

Use Enter or Space on a rung to inspect its contract. Prerequisite links locate another rung in this list; open its summary to inspect it. Estimates are authored effort, not forecasts.

  1. R0 — Full-mode RDO

    Prerequisites: None declared; this does not establish execution eligibility.

    Contract: vc_rdo_modes

    Acceptance: Intra modes and inter partitions trial-coded through the real range-coder cost like skip and transform already are; BD-rate on the MSU four-sequence set vs the 822 baseline never negative on any sequence; encode fps above the RTC tier floor

    Authored effort: 1.5. Executor kind: Organ. Responsible, accountable and verifier not established. Inspect retained worklog.

    Runtime observation: UNKNOWN; outcome UNKNOWN; observed epoch -1. Declared owner: . Receipt , SHA-256 . Identity-bound observation is not accepted completion. Qualification and deployment remain unverified by this projection.

  2. R1 — Larger transforms

    Prerequisites: None declared; this does not establish execution eligibility.

    Contract: vt_dct16

    Acceptance: 16x16 and 32x32 integer transforms with RD selection beside 4x4 and 8x8; bit-exact decode; BD-rate measured on flat content where the gain lives

    Authored effort: 2. Executor kind: Organ. Responsible, accountable and verifier not established. Inspect retained worklog.

    Runtime observation: UNKNOWN; outcome UNKNOWN; observed epoch -1. Declared owner: . Receipt , SHA-256 . Identity-bound observation is not accepted completion. Qualification and deployment remain unverified by this projection.

  3. R2 — B-frames and hierarchical GOP

    Prerequisites: R0 (acceptance unverified)

    Contract: vb_encode

    Acceptance: Bi-prediction with a B-pyramid under the existing reference model; decoder bit-exact; BD-rate gain measured per sequence; latency profile kept out of the RTC default by data

    Authored effort: 3. Executor kind: Organ. Responsible, accountable and verifier not established. Inspect retained worklog.

    Runtime observation: UNKNOWN; outcome UNKNOWN; observed epoch -1. Declared owner: . Receipt , SHA-256 . Identity-bound observation is not accepted completion. Qualification and deployment remain unverified by this projection.

  4. R3 — Post-filter trained to fire

    Prerequisites: None declared; this does not establish execution eligibility.

    Contract: vc_nf_train

    Acceptance: A training run over banked frames produces a table that measurably fires; BD-rate improves on the set; a table that changes nothing is refused, not shipped

    Authored effort: 1.5. Executor kind: Local model. Responsible, accountable and verifier not established. Inspect retained worklog.

    Runtime observation: UNKNOWN; outcome UNKNOWN; observed epoch -1. Declared owner: . Receipt , SHA-256 . Identity-bound observation is not accepted completion. Qualification and deployment remain unverified by this projection.

  5. R4 — Learned entropy hyperprior

    Prerequisites: R3 (acceptance unverified)

    Contract: ne_model

    Acceptance: A trained model over learned features (not DCT coefficients, which the measurement already showed near-optimal) with integer inference; bits per pixel vs the hand context coder published

    Authored effort: 2.5. Executor kind: Local model. Responsible, accountable and verifier not established. Inspect retained worklog.

    Runtime observation: UNKNOWN; outcome UNKNOWN; observed epoch -1. Declared owner: . Receipt , SHA-256 . Identity-bound observation is not accepted completion. Qualification and deployment remain unverified by this projection.

  6. R5 — End-to-end neural codec

    Prerequisites: R4 (acceptance unverified)

    Contract: nc_codec

    Acceptance: A DCVC-class learned codec in integer inference running on the wasm path; BD-rate vs our classical codec and vs x265 on the set; speed axis published beside it

    Authored effort: 4. Executor kind: Local model. Responsible, accountable and verifier not established. Inspect retained worklog.

    Runtime observation: UNKNOWN; outcome UNKNOWN; observed epoch -1. Declared owner: . Receipt , SHA-256 . Identity-bound observation is not accepted completion. Qualification and deployment remain unverified by this projection.

  7. R6 — Perceptual and generative coding

    Prerequisites: R5 (acceptance unverified)

    Contract: pc_gen

    Acceptance: Generative reconstruction at very low rate judged by the no-reference critic and a full-reference metric; a recon that hallucinates content fails the faithfulness tooth

    Authored effort: 4. Executor kind: Local model. Responsible, accountable and verifier not established. Inspect retained worklog.

    Runtime observation: UNKNOWN; outcome UNKNOWN; observed epoch -1. Declared owner: . Receipt , SHA-256 . Identity-bound observation is not accepted completion. Qualification and deployment remain unverified by this projection.

Learning and practice paths

No structured learning path is declared for this plan. Existing research, roadmap and worklog remain available above.

Rung dossiers — every record that bears on a rung, in one place

Joined by symbol, never typed. Each dossier is assembled on every publish from the rows this board already carries: the plan's rung row, the matrix row that carries its contract symbol (its status re-measured by the one symbol ruler), the gate the organ declares and the verdict the evidence referee recorded on its last run, the reference marks in the rung text, the design rows that name the rung and the work log filed against it. The capability matrix links each cell to its dossier and each dossier links back to its cell and forward to the rungs it stands on; a dependency naming no rung on this plan is written as UNRESOLVED rather than linked. Absences are named: NO-MATRIX-ROW, NO-GATE-DECLARED, UNRECORDED.
Gate verdicts: UNSTAMPED — no per-gate verdict artifact is published for this domain yet (nx_swcompare_evidence videocodec writes it beside its stamp); every gate below reads UNRECORDED until it runs.
Gate declarations: knowledge/organ_gate.conf read from this working directory (1 rows) and from the estate root (196 rows); rows in both counted once: 0; declarations read: 197. Every declaration in either copy counts, so a stub beside the publisher can never hide the root.
R0 Full-mode RDO · cell WATCHING · gate NO-GATE-DECLARED
Contractvc_rdo_modes · executor Organ · 1.5 u · stands on nothing
Definition of doneIntra modes and inter partitions trial-coded through the real range-coder cost like skip and transform already are; BD-rate on the MSU four-sequence set vs the 822 baseline never negative on any sequence; encode fps above the RTC tier floor
Matrix cellFull-mode RDO over intra modes and partitions · runtime/nx_vcodec.nx · WATCHING decl
GateNO-GATE-DECLARED — knowledge/organ_gate.conf carries no row for nx_vcodec; declare nx_vcodec TAB <gate> and the ship loop proves it and the verdict lands here.
Work logno log row names this rung yet
R1 Larger transforms · cell WATCHING · gate NO-GATE-DECLARED
Contractvt_dct16 · executor Organ · 2 u · stands on nothing
Definition of done16x16 and 32x32 integer transforms with RD selection beside 4x4 and 8x8; bit-exact decode; BD-rate measured on flat content where the gain lives
Matrix cellLarger transforms (16/32/64) · runtime/nx_vcodec_bigtx.nx · WATCHING decl
GateNO-GATE-DECLARED — knowledge/organ_gate.conf carries no row for nx_vcodec_bigtx; declare nx_vcodec_bigtx TAB <gate> and the ship loop proves it and the verdict lands here.
Work logno log row names this rung yet
R2 B-frames and hierarchical GOP · cell WATCHING · gate NO-GATE-DECLARED
Contractvb_encode · executor Organ · 3 u · stands on R0
Definition of doneBi-prediction with a B-pyramid under the existing reference model; decoder bit-exact; BD-rate gain measured per sequence; latency profile kept out of the RTC default by data
Matrix cellB-frames / hierarchical GOP · runtime/nx_vcodec_bframe.nx · WATCHING decl
GateNO-GATE-DECLARED — knowledge/organ_gate.conf carries no row for nx_vcodec_bframe; declare nx_vcodec_bframe TAB <gate> and the ship loop proves it and the verdict lands here.
Work logno log row names this rung yet
R3 Post-filter trained to fire · cell WATCHING · gate NO-GATE-DECLARED
Contractvc_nf_train · executor Local model · 1.5 u · stands on nothing
Definition of doneA training run over banked frames produces a table that measurably fires; BD-rate improves on the set; a table that changes nothing is refused, not shipped
Matrix cellRestoration post-filter trained to fire · runtime/nx_vcodec_nf.nx · WATCHING decl
GateNO-GATE-DECLARED — knowledge/organ_gate.conf carries no row for nx_vcodec_nf; declare nx_vcodec_nf TAB <gate> and the ship loop proves it and the verdict lands here.
Work logno log row names this rung yet
R4 Learned entropy hyperprior · cell WATCHING · gate NO-GATE-DECLARED
Contractne_model · executor Local model · 2.5 u · stands on R3
Definition of doneA trained model over learned features (not DCT coefficients, which the measurement already showed near-optimal) with integer inference; bits per pixel vs the hand context coder published
Matrix cellLearned entropy model (hyperprior) · runtime/nx_neural_entropy.nx · WATCHING decl
GateNO-GATE-DECLARED — knowledge/organ_gate.conf carries no row for nx_neural_entropy; declare nx_neural_entropy TAB <gate> and the ship loop proves it and the verdict lands here.
Work logno log row names this rung yet
R5 End-to-end neural codec · cell WATCHING · gate NO-GATE-DECLARED
Contractnc_codec · executor Local model · 4 u · stands on R4
Definition of doneA DCVC-class learned codec in integer inference running on the wasm path; BD-rate vs our classical codec and vs x265 on the set; speed axis published beside it
Matrix cellEnd-to-end neural codec · runtime/nx_neural_codec.nx · WATCHING decl
GateNO-GATE-DECLARED — knowledge/organ_gate.conf carries no row for nx_neural_codec; declare nx_neural_codec TAB <gate> and the ship loop proves it and the verdict lands here.
Work logno log row names this rung yet
R6 Perceptual and generative coding · cell WATCHING · gate NO-GATE-DECLARED
Contractpc_gen · executor Local model · 4 u · stands on R5
Definition of doneGenerative reconstruction at very low rate judged by the no-reference critic and a full-reference metric; a recon that hallucinates content fails the faithfulness tooth
Matrix cellPerceptual / generative coding · runtime/nx_perceptual_codec.nx · WATCHING decl
GateNO-GATE-DECLARED — knowledge/organ_gate.conf carries no row for nx_perceptual_codec; declare nx_perceptual_codec TAB <gate> and the ship loop proves it and the verdict lands here.
Work logno log row names this rung yet

dossiers=7 cells_joined=7 no_matrix_row=0 (sum 7) gates_recorded=0 gates_unrecorded=0 no_gate_declared=7 (sum 7 of cells_joined) evgates=UNSTAMPED

Capability comparisons

Compare the field, search individual capabilities and open their source and adoption evidence. Documented presence does not establish comparative quality.

Position map — centrality and distinctiveness

The four-quadrant map the field uses for brand strategy (Dawar and Bagga, HBR June 2015), re-derived from this matrix on every publish. Centrality is the share of the category's feature mass a player covers, each feature weighted by how many hold it; distinctiveness is the average lead over each rival on the rows the player holds; breadth is the depth-weighted share of the whole matrix (the bubble); depth is how deeply the rows held are held; momentum is the day-over-day move off the spine (green rising, red falling, grey until day two); the dashed path runs first day → previous day → today. Dividers are the category means. Axes are fitted to the field of play, so read the tick numerals, not the frame. Rival marks are documented presence, so a rival's position reads the record, never its quality. The picture grades its own readability below; the table beside it is the same data for a screen reader or a second method.

Rows. 22 feature rows mapped of 22 matrix rows; 0 substrate rows (kernels, bounds and instruments the plan's rungrole marks substrate) are the estate's scaffolding, not category features, and stay off the map
Views. 2D cut: centrality, distinctiveness · 3D cube: centrality, distinctiveness, breadth · axes registered: centrality, distinctiveness, breadth, depth, momentum · a board picks its own in knowledge/compare/videocodec.cdmap (cut|x|y, cube|x|y|z); absent = the HBR defaults
Position map, two-dimensional cutOne bubble per player. Bubble area is breadth, the ring colour is momentum, the dashed lines are the category means, and both axes are fitted to the field of play with their tick numerals shown. Every value is repeated in the table that follows. 750 775 800 825 850 875 900 925 950 50 100 150 200 250 300 350 centrality (permil, fitted 750–950) distinctiveness (permil, fitted 50–350) mean 846 mean 216 Unconventional Aspirational Peripheral Mainstream Nishi, centrality 802, distinctiveness 238, breadth 500, depth 733, momentum 0 x264 (H.264), centrality 855, distinctiveness 119, breadth 515, depth 809, momentum 0 x265 (HEVC), centrality 881, distinctiveness 211, breadth 606, depth 888, momentum 0 SVT-AV1, centrality 907, distinctiveness 218, breadth 621, depth 854, momentum 0 DCVC-FM (neural), centrality 789, distinctiveness 296, breadth 590, depth 812, momentum 0 Nishi x264 (H.264) x265 (HEVC) SVT-AV1 DCVC-FM (neural)

bubble area = breadth · ring = momentum (green rising, red falling, grey until day two) · dashed = category means · axes fitted to the field of play: centrality 750–950, distinctiveness 50–350 of 0–1000 permil (the full range put every player in one corner)
readability of the 2D cut, self-graded by the layout ruler: label overlaps 0 · labels over marks 0 · off-canvas 0 · unresolved labels 0 · mark overlaps 0 (a fact of the data: two players that close are that close) · data spread 590 permil of the plot · quadrant words unseated 0
text contrast, measured with wcag2-ratio (floors from contrast.conf), light theme: labels 16.24 (floor 4.50) · notes 16.24 (floor 4.50) · quadrant words 5.89 (floor 4.50) · tick numerals 5.89 (floor 4.50) · axis titles 5.59 (floor 4.50) · dark theme: labels 13.78 (floor 4.50) · quadrant words 5.55 (floor 4.50) · axis titles 5.97 (floor 4.50) · dark classes under their floor 0 (one figure serves both themes: a dark shortfall is a token to fix, never a class to hide) · classes refused under their floor 0 (a refused class is not drawn; the scale classes are measured, never hidden) · export: SVG PNG (receipt, rendered by the estate's own rasteriser from this page)
Position map, three-dimensional cubeThe same players in an isometric cube. Each axis is fitted to its own field of play and carries numerals on the floor grid and the vertical axis; each bubble drops a dotted line to its floor shadow so height reads as height. Values are in the table that follows. 750 775 800 825 850 875 900 925 950 50 100 150 200 250 300 350 475 500 525 550 575 600 625 650 centrality distinctiveness breadth x264 (H.264): centrality 855, distinctiveness 119, breadth 515 Nishi: centrality 802, distinctiveness 238, breadth 500 DCVC-FM (neural): centrality 789, distinctiveness 296, breadth 590 x265 (HEVC): centrality 881, distinctiveness 211, breadth 606 SVT-AV1: centrality 907, distinctiveness 218, breadth 621 Nishi x264 (H.264) x265 (HEVC) SVT-AV1 DCVC-FM (neural)
axes fitted: centrality 750–950 · distinctiveness 50–350 · breadth 475–650 permil · farther bubbles are painted first, nearer ones over them · the floor shadow is each bubble's (x, y) at height 0
readability of the 3D cube, self-graded by the layout ruler: label overlaps 0 · labels over marks 0 · off-canvas 1 · unresolved labels 0 · mark overlaps 1 (a fact of the data: two players that close are that close) · data spread 344 permil of the plot
Position map, small multiplesEvery pair of registered axes as one small cut. Each panel fits both axes to the field of play, the dashed lines are the category means, bubble area is breadth and the ring colour is momentum; the legend below names the colours. 750 950 50 350 distinctiveness vs centrality Nishi: centrality 802, distinctiveness 238 x264 (H.264): centrality 855, distinctiveness 119 x265 (HEVC): centrality 881, distinctiveness 211 SVT-AV1: centrality 907, distinctiveness 218 DCVC-FM (neural): centrality 789, distinctiveness 296 750 950 475 650 breadth vs centrality Nishi: centrality 802, breadth 500 x264 (H.264): centrality 855, breadth 515 x265 (HEVC): centrality 881, breadth 606 SVT-AV1: centrality 907, breadth 621 DCVC-FM (neural): centrality 789, breadth 590 750 950 700 950 depth vs centrality Nishi: centrality 802, depth 733 x264 (H.264): centrality 855, depth 809 x265 (HEVC): centrality 881, depth 888 SVT-AV1: centrality 907, depth 854 DCVC-FM (neural): centrality 789, depth 812 750 950 480 520 momentum vs centrality Nishi: centrality 802, momentum 500 x264 (H.264): centrality 855, momentum 500 x265 (HEVC): centrality 881, momentum 500 SVT-AV1: centrality 907, momentum 500 DCVC-FM (neural): centrality 789, momentum 500 50 350 475 650 breadth vs distinctiveness Nishi: distinctiveness 238, breadth 500 x264 (H.264): distinctiveness 119, breadth 515 x265 (HEVC): distinctiveness 211, breadth 606 SVT-AV1: distinctiveness 218, breadth 621 DCVC-FM (neural): distinctiveness 296, breadth 590 50 350 700 950 depth vs distinctiveness Nishi: distinctiveness 238, depth 733 x264 (H.264): distinctiveness 119, depth 809 x265 (HEVC): distinctiveness 211, depth 888 SVT-AV1: distinctiveness 218, depth 854 DCVC-FM (neural): distinctiveness 296, depth 812 50 350 480 520 momentum vs distinctiveness Nishi: distinctiveness 238, momentum 500 x264 (H.264): distinctiveness 119, momentum 500 x265 (HEVC): distinctiveness 211, momentum 500 SVT-AV1: distinctiveness 218, momentum 500 DCVC-FM (neural): distinctiveness 296, momentum 500 475 650 700 950 depth vs breadth Nishi: breadth 500, depth 733 x264 (H.264): breadth 515, depth 809 x265 (HEVC): breadth 606, depth 888 SVT-AV1: breadth 621, depth 854 DCVC-FM (neural): breadth 590, depth 812 475 650 480 520 momentum vs breadth Nishi: breadth 500, momentum 500 x264 (H.264): breadth 515, momentum 500 x265 (HEVC): breadth 606, momentum 500 SVT-AV1: breadth 621, momentum 500 DCVC-FM (neural): breadth 590, momentum 500 700 950 480 520 momentum vs depth Nishi: depth 733, momentum 500 x264 (H.264): depth 809, momentum 500 x265 (HEVC): depth 888, momentum 500 SVT-AV1: depth 854, momentum 500 DCVC-FM (neural): depth 812, momentum 500
Nishi x264 (H.264) x265 (HEVC) SVT-AV1 DCVC-FM (neural)
10 panels over 5 registered axes, every pair once (the lower axis on x, the higher on y) · each panel fitted to its own field of play, first and last tick numerals shown · no labels in a small cut, the legend names the colours; the grade below reports the mark terms only (MM summed over the panels, spread averaged)
readability of the small multiples, self-graded by the layout ruler: label overlaps 0 · labels over marks 0 · off-canvas 0 · unresolved labels 0 · mark overlaps 2 (a fact of the data: two players that close are that close) · data spread 497 permil of the plot
PlayerQuadrantcentralitydistinctivenessbreadthdepthmomentumRows heldDays on spineFirst seen
NishiUnconventional8022385007330 since 2026-09-2315102026-09-15
x264 (H.264)Mainstream8551195158090 since 2026-09-2314102026-09-15
x265 (HEVC)Mainstream8812116068880 since 2026-09-2315102026-09-15
SVT-AV1Aspirational9072186218540 since 2026-09-2316102026-09-15
DCVC-FM (neural)Unconventional7892965908120 since 2026-09-2316102026-09-15
DayMatrix rows reviewedPlayers recorded
2026-09-15225
2026-09-16225
2026-09-17225
2026-09-18225
2026-09-19225
2026-09-20225
2026-09-21225
2026-09-22225
2026-09-23225
2026-10-08225

players 5|matrix rows 22|feature mass 76|centrality mean 846|distinctiveness mean 216|axes 5|spine days 10 (shown 10)|rows written today 0|readability defects 2D 0 cube 1|spine knowledge/status/cdmap/videocodec.spine

How to read this evidence. A Nishi source mark records whether the named symbol is declared in the selected source file. It does not establish working behavior or accepted delivery. A watching tag names an expected source entry; discovering it updates source coverage only. A dark tag means the file exists but the named symbol was not found: inspect the source and contract before assuming the capability is missing or renaming code. Peer codes are authored assessments; unassessed means no comparison is established, not absence. Qualification, deployment identity, runtime observations and acceptance must carry their own evidence. Adoption records the catalog's observed path through source, build, promotion, registration and invocation; libraries use importer evidence and gates use declared execution surfaces. A full catalog path does not establish quality, freshness or a successful user outcome. Partial and unknown states retain their stated next action. Census stamps: importers asof 1790637268, gate census asof 1790104131 (unix seconds; -1 = census absent).

Capability matrix — measured against source

◉ authored stronger claim; source present● present◐ partial○ absent? unassessed; excluded from relative comparison · click any capability for its evidence

Peer cell coverage: authored assessed 88, unassessed 0. Authored assessments are not verified outcomes.

CapabilityNishix264 (H.264)x265 (HEVC)SVT-AV1DCVC-FM (neural)
Block transform -- integer DCTMeasured: nx_dct8_forward_1d exists in runtime/nx_dct8.nx, verified at emit. Nishi 4x4 + 8x8 [h264]; HEVC to 32x32, AV1 to 64x64 (big win on flat content) Adoption: LIB-WIRED importers=27 nonval=14 — fully adopted (top of its ladder).
Pros Implementing source symbol found; runtime acceptance separate; fully adopted on the estate ladderCons none on the measured axes (rival marks are documented presence, not depth)
●●●●●
Context/arithmetic entropy coderMeasured: rc_block_encode exists in runtime/nx_rangecoder.nx, verified at emit. Nishi binary range coder saves 33pct vs its own CAVLC (MEASURED); CABAC [x264] + learned entropy are deeper Adoption: LIB-WIRED importers=4 nonval=2 — fully adopted (top of its ladder).
Pros Implementing source symbol found; runtime acceptance separate; fully adopted on the estate ladderCons behind x264 (H.264) (leads), x265 (HEVC) (leads), SVT-AV1 (leads), DCVC-FM (neural) (leads)
●◉◉◉◉
Quarter-pel motion compensationMeasured: qp_pixel exists in runtime/nx_vsubpel.nx, verified at emit. Nishi 1/4-pel translational; AV1 adds 1/8-pel, affine, OBMC [av1spec] Adoption: LIB-WIRED importers=5 nonval=3 — fully adopted (top of its ladder).
Pros Implementing source symbol found; runtime acceptance separate; fully adopted on the estate ladderCons behind SVT-AV1 (leads)
●●●◉●
Variable block-size motion partitionsMeasured: vc_enc_mb_part8_inter exists in runtime/nx_vcodec.nx, verified at emit. Nishi P_8x8 = 4 independent 8x8 MVs per MB, RD-selected vs 16x16, differential MV -- LIVE vcv-7 (BUILD 810). MEASURED +2-4pct bit-exact on MSU akiyo/foreman/bus/mobile at qp8/20/32. The first partition rung; x264 splits to 4x4, HEVC uses a CTU quadtree, AV1 to 4x4-plus. Cuts the dominant P-frame residual (measured 87-97pct of P bits) rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them Adoption: BUILT-UNPROMOTED — PARTIAL: compiled, never promoted to the serving root: /api/promote it.
not adopted: compiled, never promoted to the serving root: /api/promote it
Pros Implementing source symbol found; runtime acceptance separateCons behind x265 (HEVC) (leads), SVT-AV1 (leads); not adopted yet: compiled, never promoted to the serving root: /api/promote it
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Rich intra predictionMeasured: vc_pred_rich exists in runtime/nx_vcodec.nx, verified at emit. Nishi 9 modes + MPM; HEVC 35, AV1 56-plus directional rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them Adoption: BUILT-UNPROMOTED — PARTIAL: compiled, never promoted to the serving root: /api/promote it.
not adopted: compiled, never promoted to the serving root: /api/promote it
Pros Implementing source symbol found; runtime acceptance separateCons behind x265 (HEVC) (leads), SVT-AV1 (leads); not adopted yet: compiled, never promoted to the serving root: /api/promote it
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In-loop filteringMeasured: vv_deblock exists in runtime/nx_video_codec_wasm.nx, verified at emit. Nishi deblock, gentle-tuned vcv-8 (c1 qp*1.5+2 -> qp/2+2 was the FIFTH mis-tuned constant: over-smoothing the in-loop reference cost 24-47 BD-rate pts, MEASURED + shipped BUILD 815); HEVC adds SAO, AV1 adds CDEF + loop restoration rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them Adoption: LIB-WIRED importers=65 nonval=19 — fully adopted (top of its ladder).
Pros Implementing source symbol found; runtime acceptance separate; fully adopted on the estate ladderCons behind x265 (HEVC) (leads), SVT-AV1 (leads)
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Rate-distortion mode decision (real-bit RDO)Measured: vc_enc_block_packed_e exists in runtime/nx_vcodec.nx, verified at emit. Nishi RDO now covers THREE decisions: (1) RD-SKIP (BUILD 816, archival profile): every P-MB trial-coded skip-vs-code through the LIVE range coder (est/probs snapshot+restore), argmin J=32*SSE+qp^2*bits -- MEASURED -7..-44 BD-rate pts; (2) per-MB HEAT-AQ skip policy (BUILD 819, live): past-streak-modulated thresholds, -1.72pct avg; (3) per-MB 4x4-vs-8x8 TRANSFORM trial (BUILD 820, live): the 803 machinery awakened -- both transforms trial-quantized per coded MB, argmin J commits, t8 bit explicit on the wire (stock decode) -- MEASURED -0.52pct avg incremental (never negative, +9.3pct encode at 120fps). Its bit cost is still the CAVLC table (the true stream is range-coded) -- replacing it with real-rc-bit trial costing is the remaining P3 rung. x264/x265 apply full-RDO to every mode+partition+transform (the 20-year integration edge); ours now covers skip+transform -- modes/partitions remain rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them Adoption: BUILT-UNPROMOTED — PARTIAL: compiled, never promoted to the serving root: /api/promote it.
not adopted: compiled, never promoted to the serving root: /api/promote it
Pros Implementing source symbol found; runtime acceptance separateCons behind x264 (H.264) (leads), x265 (HEVC) (leads), SVT-AV1 (leads), DCVC-FM (neural) (leads); not adopted yet: compiled, never promoted to the serving root: /api/promote it
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B-frames / hierarchical GOPOpen — watching runtime/nx_vcodec_bframe.nx : vb_encode, re-measured on every compare beat. Ship that symbol and this mark flips itself; the comparewatch- plane row flips with it. Nishi is I+P only; hierarchical-B is 15-30pct of the majors efficiency rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them
dossierwatching vb_encode
Pros none measured yetCons behind x264 (H.264) (leads), x265 (HEVC) (leads), SVT-AV1 (leads), DCVC-FM (neural); open contract; expected source declaration not established
○◉◉◉●
Larger transforms (16/32/64)Open — watching runtime/nx_vcodec_bigtx.nx : vt_dct16, re-measured on every compare beat. Ship that symbol and this mark flips itself; the comparewatch- plane row flips with it. Nishi 8x8 max; HEVC 32x32 [h265] [x265], AV1 64x64
dossierwatching vt_dct16
Pros none measured yetCons behind x265 (HEVC) (leads), SVT-AV1 (leads); open contract; expected source declaration not established
○○◉◉○
Trained restoration post-filterMeasured: vc_nf_apply exists in runtime/nx_vcodec_nf.nx, verified at emit. Nishi has a trained integer post-filter but the table is mostly-identity today (barely fires); neural codecs learn the whole loop rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them Adoption: LIB-WIRED importers=2 nonval=2 — fully adopted (top of its ladder).
Pros Implementing source symbol found; runtime acceptance separate; ahead of x264 (H.264), x265 (HEVC), SVT-AV1; fully adopted on the estate ladderCons none on the measured axes (rival marks are documented presence, not depth)
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Learned entropy model (hyperprior)Open — watching runtime/nx_neural_entropy.nx : ne_model, re-measured on every compare beat. Ship that symbol and this mark flips itself; the comparewatch- plane row flips with it. MEASURED: our hand-context coder is already 0.088 bits/sig-flag (near-optimal) -- a trained model on DCT coeffs is marginal; the DCVC win is a JOINTLY-TRAINED model over LEARNED features, not DCT [dcvcfm24]
dossierwatching ne_model
Pros none measured yetCons behind DCVC-FM (neural) (leads); open contract; expected source declaration not established
○○○○◉
End-to-end neural codecOpen — watching runtime/nx_neural_codec.nx : nc_codec, re-measured on every compare beat. Ship that symbol and this mark flips itself; the comparewatch- plane row flips with it. DCVC-FM beats VVC by 20-40pct [dcvcfm24]; Nishi is classical block-based only
dossierwatching nc_codec
Pros none measured yetCons behind DCVC-FM (neural) (leads); open contract; expected source declaration not established
○○○○◉
Perceptual / generative codingOpen — watching runtime/nx_perceptual_codec.nx : pc_gen, re-measured on every compare beat. Ship that symbol and this mark flips itself; the comparewatch- plane row flips with it. The number-one frontier (momentum 108); GAN/diffusion codecs -- Nishi absent rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them
dossierwatching pc_gen
Pros none measured yetCons behind SVT-AV1, DCVC-FM (neural) (leads); open contract; expected source declaration not established
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Compression efficiency (external BD-rate, ffmpeg oracle)Measured: vc_enc_frame_packed_rc exists in runtime/nx_vcodec.nx, verified at emit. MEASURED on 4 standard CIF seqs vs x264/x265/AV1 (ffmpeg Y-PSNR, GOP48 zerolatency RTC) [svtav1] [bjontegaard01] [msu-codec-comparison]. TWO PROFILES (a codec is a rate/quality/SPEED triangle -- BD-rate alone is a partial grade): (1) RTC/live (BUILD 822, the shipped /video default): THREE gen-2 rungs shipped 2026-07-12 -- P2 HEAT-AQ (819: protect long-static MBs from drift, per-MB skip-thresh /2 on a 4-skip streak; -1.72pct avg) + t8 RD-auto (820: per-MB 4x4-vs-8x8 transform trial; -0.52pct) + P3 REAL-BIT RDO (822: the trial made byte-faithful to the emit paths -- RDOQ levels in BOTH arms + each arm costed by a read-only walk of the coder's OWN adaptive sig-map bins (rc_sig_cost_q8/rc_bits_q8) instead of CAVLC tables; -2.58pct avg incremental, biggest on motion content bus -3.16) = COMBINED MEASURED **-4.82pct avg BD-rate vs the 817 baseline** (akiyo -6.86 / foreman -6.00 / bus -4.05 / mobile -2.38), never negative on any seq, same-scorer x264 gap cut **+176pct -> +159pct in one day**, encode 119 fps (measured, far above every tier floor; the real-bit cost walk is FREE vs the tables); the CHURN direction (cheapening active MBs) measured +6.4pct = REFUTED, never do it. (2) ARCHIVAL/offline (RD-skip emode bit11, ~10 fps, for stored-media transcode): avg +140pct vs x264 (old-scorer scale) -- RD-skip's J=32D+q^2R trial coding buys -7..-44 BD-pts but costs 9-19x encode, so it is NOT the live default. Lineage 811-815 fixed five mis-tuned constants (foreman 21x -> 2.4x, 8.7x bitrate cut from the original +703..+1987pct). INTRA-only +41..+66pct. Gen-1 levers measured out: subpel/partition/ME/MV-pred ~0, multi-ref 1.5pct, intra-in-P wash, SATD 0.1-0.5pct, I16-pred/16x16-TX/CDEF/QP-cascade REFUTED. Remaining vs x264 = 2nd-gen architecture (32x32 CTU, hier-refs, B-pyramid) + compound RDO Adoption: BUILT-UNPROMOTED — PARTIAL: compiled, never promoted to the serving root: /api/promote it.
not adopted: compiled, never promoted to the serving root: /api/promote it
Pros Implementing source symbol found; runtime acceptance separateCons behind x264 (H.264) (leads), x265 (HEVC) (leads), SVT-AV1 (leads), DCVC-FM (neural) (leads); not adopted yet: compiled, never promoted to the serving root: /api/promote it
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Real-time encode throughput (fps budget)Measured: vv_enc_rct8 exists in runtime/nx_video_codec_wasm.nx, verified at emit. MEASURED (vc_fps_bench, wasm VM, 320x256 P-frame, talking-head): Nishi RTC profile ~89 fps single-thread (browser-viable for live calls); ARCHIVAL/RD-skip profile 4.6-9.7 fps (offline only). x264 zerolatency = the RTC gold standard (1080p realtime on a desktop core) [x264]; x265/AV1 need fast presets or HW; DCVC-neural = GPU-only. ★A codec claim is INCOMPLETE without this axis -- BUILD 816 shipped an RD-skip that collapsed live encode 89->4.6 fps because the census had NO speed axis; 817 split the profiles + added this row Adoption: LIB-WIRED importers=65 nonval=19 — fully adopted (top of its ladder).
Pros Implementing source symbol found; runtime acceptance separate; ahead of DCVC-FM (neural); fully adopted on the estate ladderCons behind x264 (H.264) (leads), x265 (HEVC) (leads)
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Encoder stage attribution -- where the encode time goes, per macroblock (sovereign stage bench)Measured: sb_run exists in runtime/nx_vcodec_stage_bench.nx, verified at emit. MEASURED 2026-09-02 by nx_vcodec_stage_bench (new, sovereign, laptop-runnable: the PRODUCTION rct8 RTC encoder, emode 2593, over the real head-to-head test card, timing the whole encode, the integer search, the quarter-pel refine and the 16x4x4 transform-RDOQ-entropy coder per macroblock, with band populations, PSNR and a wire digest per run). At the LIVE point (qp 24, skip threshold qp*30) a 352x288 frame cost 23.7 ms: integer search 30 percent, qpel 9 percent, the whole 4x4 coder only 9 us per coded MB -- and the RD-skip band trial was 65 percent of the frame, because the lower trial band [thr/4, thr) held 291 of 396 MBs (its floor sits BELOW the recon quantisation-noise floor of a static block, so 88 percent of the frame paid a 55 us code-arm trial and re-skipped; 1746 vs 1749 bytes). FIX (build 865, encoder-only bit14 VC_EMODE_QQSKIP): trial a lower-band MB only when an 8x8 quadrant moves -- 23.7 to 11.0 ms per frame, wire digests of every unchanged mode byte-identical, BD-rate by nx_bd_calc on akiyo/foreman/bus/mobile +0.1/+0.9/-0.7/0.0 percent, live single-thread encode 93 to 21 ms at 416x320. NEXT named bottleneck: about 55 us per CODED MB on moving content (search 18, a SCALAR bilinear qpel refine 20-28 beside a SIMD integer SAD, coder 9). x264, x265 and SVT-AV1 ship per-stage timing and stat reports (1); neural codecs do not expose one (0). [x264] [svtav1] Adoption: REGISTERED-DARK — PARTIAL: callable, authorised, completed MCP invocation not established by supplied journal window; lifetime history unknown (direct execution may be recorded elsewhere; this scan does not establish lifetime use); no execution surface runs it either (clock, cron, daemon, roster, actlog and surfaced forks checked).
not adopted: callable, authorised, completed MCP invocation not established by supplied journal window; lifetime history unknown (direct execution may be recorded elsewhere; this scan does not establish lifetime use); no execution surface runs it either (clock, cron, daemon, roster, actlog and surfaced forks checked)
Pros Implementing source symbol found; runtime acceptance separate; ahead of DCVC-FM (neural)Cons not adopted yet: callable, authorised, completed MCP invocation not established by supplied journal window; lifetime history unknown (direct execution may be recorded elsewhere; this scan does not establish lifetime use); no execution surface runs it either (clock, cron, daemon, roster, actlog and surfaced forks checked)
●●●●○
Live resolution ceiling + per-device adaptive sendMeasured: vv_enc_rct8 exists in runtime/nx_video_codec_wasm.nx, verified at emit. MEASURED (vc_res_bench/vc_hd_bench, wasm VM): the codec itself is RESOLUTION-AGNOSTIC (bit-exact GREEN proven at 640x480/960x544/1280x720); the LIVE ceiling is the client memory layout + single-thread fps. BUILD 818 (2026-07-12) raised the shipped ceiling 320x256 -> 640x480 with Jitsi-class per-device adaptive tiers (measured: 640x480=38.6fps / 480x384=58 / 416x320=70 single-thread; tier picked by mount-time measured encoder class; LO 128x96 simulcast for weak receivers; old-peer rooms fail safe to 320x256) + adaptive tile rendering (the old client DOWNSCALED every received frame onto a 320x256 canvas -- resolution was capped at DISPLAY too). Majors do 720p-1080p live (x264 1080p realtime single-core; Zoom/Meet/Jitsi default 720p) -- Nishi is BEHIND on ceiling until the tile-parallel HD arc lands: 720p single-thread = 8.8 fps MEASURED, needs ~4-band parallel encode with the rich codec in the band path (band path is legacy-entropy today; legacy band at 1280x704 = 251ms/band REFUTED). ★This axis was MISSING from the census while users saw potato -- presence of a speed row did not catch a resolution cap; grade what users SEE. UPDATE 2026-08-19: V1 SHIPPED (build 862) -- the CLIENT ceiling was RAISED from 640x480 to HD 1152x640/1024x576 adaptive via vc_res_tier_hd + a fully DERIVED region layout (no magic hex, grown to 108 MB, gated on all-peers-862 + deviceMemory>=4); codec bit-exact roundtrip at 1152x640/1024x576/640x480 gate-proven (25/25) and served byte-identical to the gated build. 1280x720 (45 MB-rows, no even band split) is the next K=2 rung; see V1 on /compare/video rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them Adoption: LIB-WIRED importers=65 nonval=19 — fully adopted (top of its ladder).
Pros Implementing source symbol found; runtime acceptance separate; fully adopted on the estate ladderCons behind x264 (H.264) (leads), x265 (HEVC) (leads), SVT-AV1 (leads)
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Sovereign own-stack (zero third-party)Source present; authored stronger claim: vc_t8_init in runtime/nx_vcodec.nx, verified at emit. Own language, compiler, wasm -- x264/x265/AV1 are C/C++, DCVC is Python/CUDA Adoption: BUILT-UNPROMOTED — PARTIAL: compiled, never promoted to the serving root: /api/promote it.
not adopted: compiled, never promoted to the serving root: /api/promote it
Pros Source symbol found; stronger capability claim is authored; ahead of x264 (H.264), x265 (HEVC), SVT-AV1, DCVC-FM (neural)Cons not adopted yet: compiled, never promoted to the serving root: /api/promote it
◉○○○○
Integer-deterministic bit-exact everywhereSource present; authored stronger claim: vc_mb_t8_ok in runtime/nx_vcodec.nx, verified at emit. No-float pipeline reproduces bit-exact on ANY device, which is what makes recon-hash conformance possible; float codecs cannot Adoption: BUILT-UNPROMOTED — PARTIAL: compiled, never promoted to the serving root: /api/promote it.
not adopted: compiled, never promoted to the serving root: /api/promote it
Pros Source symbol found; stronger capability claim is authored; ahead of x264 (H.264), x265 (HEVC), SVT-AV1, DCVC-FM (neural)Cons not adopted yet: compiled, never promoted to the serving root: /api/promote it
◉○○○○
One codec
browser tab + Nishi browser + native NishiOSSource present; authored stronger claim: vv_enc_rct8 in runtime/nx_video_codec_wasm.nx, verified at emit. The same sovereign codec runs in a tab, the Nishi browser, and native NishiOS; others need hardware or wasm ports rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them Adoption: LIB-WIRED importers=65 nonval=19 — fully adopted (top of its ladder).
Pros Source symbol found; stronger capability claim is authored; ahead of x264 (H.264), x265 (HEVC), SVT-AV1, DCVC-FM (neural); fully adopted on the estate ladderCons none on the measured axes (rival marks are documented presence, not depth)
◉◐◐◐○
Full-mode RDO over intra modes and partitionsDARK — runtime/nx_vcodec.nx EXISTS but does not declare vc_rdo_modes: something shipped at this path under another name, and this mark would read open forever. Repoint the contract to the real entry point (the plan rung AND this row) or rename the function; the flip follows on the next beat, and the comparewatch- plane row reads DARK until then. The RDO row's own remainder: skip and transform are RD-decided, modes and partitions are not rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them
dossierwatching vc_rdo_modes
Pros none measured yetCons behind x264 (H.264) (leads), x265 (HEVC) (leads), SVT-AV1 (leads), DCVC-FM (neural) (leads); open contract; expected source declaration not established
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Restoration post-filter trained to fireDARK — runtime/nx_vcodec_nf.nx EXISTS but does not declare vc_nf_train: something shipped at this path under another name, and this mark would read open forever. Repoint the contract to the real entry point (the plan rung AND this row) or rename the function; the flip follows on the next beat, and the comparewatch- plane row reads DARK until then. The trained table is mostly identity today; a training run that measurably fires, BD-rate proven rival marks uncited — the Yes, Best or Part codes on this row are an observation read with no reference mark behind them
dossierwatching vc_nf_train
Pros none measured yetCons behind DCVC-FM (neural); open contract; expected source declaration not established
○○○○●
Rival-claim provenance. Every Yes, Best or Part mark in a rival column is a claim about someone else's product. A cited row carries a reference mark that resolves to a pinned mirror (the refs gate measures that); an uncited row is an observation read and is badged in its evidence until a reference lands. The badge is the receipt, never the proof: a mark proves a mirror exists, not that the mirror supports the code. The rows are counted below.
Rival claims, counted
ClassCountNote
rows with rival marks20rows carrying a Yes, Best or Part in a rival column
cited9a reference mark resolves to a pinned mirror
uncited11an observation read, badged until a reference lands
rows, summed20RECONCILED: the parts sum to the total 20

Delivery and evidence

Inspect risks, technical debt, rendered observations, experiments and references. Read scope and limitations alongside every result.

On these two registers. Rows are declared in the domain's plan file and carry the debt id, which is the join key back to the sovereign debt plane — that plane, not this page, is the authority on state. Reconciling them automatically (the regen reading the plane and refreshing these rows) is a named, owed rung; until it lands, treat an id here as a pointer to look up, not a status to trust.
Honest verdict. Nishi runs a REAL H.264-class sovereign codec end-to-end -- range-coded entropy, quarter-pel motion, RD-selected partitions, in-loop deblock, live at nishifamily.com/video in two MEASURED profiles (RTC ~89fps at +159pct BD-rate vs x264; ARCHIVAL RD-skip at +140pct) with a 640x480 adaptive live ceiling (BUILD 818). It is <b>not</b> yet a bitrate rival: the remaining gap vs the majors is second-generation architecture (32x32-plus CTUs, hierarchical B-refs, full-mode RDO) and the live ceiling trails their 720p-1080p until the tile-parallel HD arc lands. The genuine <b>exceeds</b> are structural -- the whole stack in one sovereign language, integer-deterministic bit-exact reconstruction on any device (recon-hash conformance the float codecs cannot do), and one codec running browser tab, Nishi browser, and native NishiOS. Every number on this page is MSU-methodology measured (ffmpeg Y-PSNR oracles), liar-killed, and re-graded on every ship -- including the regressions.

Person · product · place — not yet measured for this domain

Every compare carries this layer. Declare knowledge/compare/videocodec.ppp (rows surface|nishi or c1..c4|label|url|connect naming OUR live surface and each rival's front door), run nx_ppp_probe domain videocodec, and this section fills itself on the next beat: the same ruler on both sides — privacy and CX (third-party hosts, tracker classes, cookies, security headers), design and longevity (design hygiene, computed WCAG contrast, render-blocking resources, unsized media, script weight, theme and motion queries), findability (landmarks, skip link, on-site search, breadcrumb, headings, internal links).

The field — discovered, not chosen

Rows written by nx_field_discover from videocodec.seeds: the industry's own lists (Wikipedia wikitext, GitHub topics, awesome lists) read mechanically, every candidate counted across seeds. The matrix columns above are a SEAT'S pick; this band is the population they were picked from, and the stats line measures one against the other. A rival here is a lead, never a verdict — it earns a column when its capabilities are read and pinned.

Discovery receipt. One row per counter the run wrote, in the receipt's own order; the rival rows follow in their own table.
Field discovery, counted
ClassCountNote
seeds4
scanned4
fetched4
reused0
failed0
named4
candidates4
mentions4
capped0
RankRivalSeedsMentionsFirst seedKindLink
1x264 (H.264)11col0-x264namedhttps://www.videolan.org/developers/x264.html
2x265 (HEVC)11col1-x265namedhttps://www.videolan.org/developers/x265.html
3SVT-AV111col2-svtnamedhttps://gitlab.com/AOMediaCodec/SVT-AV1
4DCVC-FM (neural)11col3-dcvcnamedhttps://arxiv.org/abs/2402.17414

field candidates 4|shown 4 of 4|matrix columns in the field 4 of 4|discovered rivals with no column 0|malformed rows 0 (counted, never rendered)|read-capped 0

Exclusive and shared capabilities

One capability is graded on one board; every other board references it. The fleet duplicate census (nx_rivalcensus dupes, on the fleetdupes clock row) reads every board's matrix and names each capability graded as a row on two or more boards, with a home derived from evidence: rung when exactly one board's plan contracts the symbol (that board is starred), gates when no plan contracts it and exactly one board's executed gate map runs the organ's gate (that board is plussed), ambiguous when several boards carry the deciding evidence (a decision for their seats), and none when no evidence decides it, with the reason beside it: unmapped (no board of the duplicate declares a gates map; declare the maps) or unproven (a map exists and runs none of the organ's gates; gate the organ on its proving board, or declare it a shared library by policy). A home elsewhere means this board should carry an @xrow reference to the home board's row rather than a graded row of its own; a home here means the other boards should. The table is this board's slice of one estate-wide census: the shape is shared, the rows are the board's.

This board grades 20 capabilities: 17 exclusive to it and 3 shared with other boards. Shared rows on this page: 3 = home here 0 + home elsewhere 0 + ambiguous 0 + undecided 3 + refused 0 (partition 3); undecided = unmapped 0 + unproven 3 + unevidenced 0; homonyms 1; since the previous census: new 0, resolved 0. Census FRESH age_s=6463.

CapabilityOrganBoards grading itHomeRuleEvidenceStanding on this board
vv_enc_rct8nx_video_codec_wasm.nxcomms, videocodec, video—noneunprovenundecided
sb_run-videocodec:runtime/nx_vcodec_stage_bench.nx, referee:runtime/nx_std_bench.nx—homonym-homonym
vc_t8_initnx_vcodec.nxvideocodec, videoops—noneunprovenundecided
vc_mb_t8_oknx_vcodec.nxvideocodec, videoops—noneunprovenundecided

Gaps from the record — what the estate does that no board carries

The record census (nx_goalmap record) reads the invoked-tool population and every plan queue row and files each organ or directive that NO matrix, plan or gates row names. A row here is a callout the boards missed: adjudicate it onto a board or declare it infrastructure. Census state STALE (age 1395568 s), sources read 4 of 7 declared — a BLIND census is a FLOOR: unread sources can only add rows.

kindnameboardsourceevidence

rows shown 0|this board's directives 0|estate-wide un-boarded organs 452 (listed in full on /compare/ecosystem)|census rows 639|malformed 0 (counted, never rendered)

References

Beyond a link list. Every reference below resolves twice — the publisher's copy and, where banked, the estate's own non-rottable library mirror with a content pin — and carries its evidence class plus the exact claim on this page it grounds. Keyed marks like [key] in the matrix notes jump here. A dash means honestly absent, never assumed.
  1. [x264] VideoLAN. x264, the best H.264/AVC encoder: CAVLC/CABAC entropy coding, adaptive B-frame placement and B-frames as references, psy-RD and psy-trellis, multipass ABR/VBV ratecontrol, 4 or more 1080p streams in realtime on a consumer machine. publisher · read in our library knowledge/fetched/cmp_videocodec_x264.html · pin h8ac7051331232bc3423f7c294ee026b062290eb8459679751e822e5f44894a79 · accessed 2026-08-18 · vendor-docGrounds: The x264 column: "Context/arithmetic entropy coder" (CABAC), "B-frames / hierarchical GOP" (adaptive B placement, B-refs), "Rate-distortion mode decision (real-bit RDO)" (psy-RD/trellis over every mode) and "Real-time encode throughput (fps budget)" -- the page's 1080p-realtime claim is the RTC gold standard the row grades our 89 fps 320x256 against.
  2. [x265] VideoLAN and MulticoreWare. x265, free H.265/HEVC encoder: quad-tree prediction, adaptive B-frame placement, CABAC, multiple reference frames, frame-level and wavefront parallelism; GPL with commercial licence. publisher · read in our library knowledge/fetched/cmp_videocodec_x265.html · pin hb0c55e0005ad2b44ece4b190fc6151f17f37eb96afe8f81089bd77537f176fac · accessed 2026-08-18 · vendor-docGrounds: The x265 column: "Larger transforms (16/32/64)" and "Variable block-size motion partitions" ride the HEVC CTU quadtree the page names; "Real-time encode throughput" code 2 with fast presets or parallelism, as the page describes.
  3. [svtav1] Alliance for Open Media. SVT-AV1 -- the AOM-maintained AV1 software encoder (Clear BSD; official GitLab repository with README, CHANGELOG and releases). publisher · read in our library knowledge/fetched/cmp_videocodec_svtav1.html · pin h29f5ebda4e8ba42867599b0979acccdc377d006f15d12c732b3cc90e4712a7e5 · accessed 2026-08-18 · vendor-docGrounds: The SVT-AV1 column: the AV1 encoder our ffmpeg oracle runs for the "Compression efficiency (external BD-rate, ffmpeg oracle)" row and whose fast presets ground the "Real-time encode throughput" code 1.
  4. [av1spec] Alliance for Open Media. AV1 Bitstream and Decoding Process Specification (v1.0.0 with errata), the normative decoder definition: 1/8-pel and warped/affine motion, OBMC, directional intra modes, CDEF and loop restoration, transforms to 64x64. publisher · read in our library knowledge/fetched/cmp_videocodec_av1spec.html · pin hacf58a3fdb82a85e25aa7fe19b8fe2a5ccc02884d0e852f2fc9b05ba7aa49609 · accessed 2026-08-18 · published-standardGrounds: The AV1 feature reads across "Quarter-pel motion compensation" (AV1 adds 1/8-pel, affine, OBMC), "Rich intra prediction" (directional modes), "In-loop filtering" (CDEF + loop restoration) and "Larger transforms (16/32/64)" (AV1 64x64) are read from this normative text, not from marketing.
  5. [h264] ITU-T. Recommendation H.264: Advanced video coding for generic audiovisual services (first edition 05/2003; in-force editions through 2024) -- ITU-T publication page listing every edition. publisher · read in our library knowledge/fetched/cmp_videocodec_h264.html · pin hce4404ca022f3b50d0ba54439285cac85dcbc09d0a6ec6a6059642f833b1ba84 · accessed 2026-08-18 · published-standardGrounds: The @verdict claim "a REAL H.264-class sovereign codec": CAVLC/CABAC, quarter-pel MC, 4x4/8x8 integer transform, 9 intra 4x4 modes and in-loop deblocking are H.264 toolset elements, so "Block transform -- integer DCT", "Rich intra prediction" (Nishi 9 modes + MPM) and "In-loop filtering" (deblock) are graded against this standard's toolset.
  6. [h265] ITU-T. Recommendation H.265: High efficiency video coding (first edition 04/2013; in-force editions through 2024) -- ITU-T publication page listing every edition. publisher · read in our library knowledge/fetched/cmp_videocodec_h265.html · pin h0f621ca591bf5c68bdb52451098015cb033d6aba38178de88422da585eec886b · accessed 2026-08-18 · published-standardGrounds: The HEVC feature reads: "Larger transforms (16/32/64)" (HEVC 32x32), "Rich intra prediction" (HEVC 35 modes), "In-loop filtering" (HEVC adds SAO) and the CTU quadtree behind "Variable block-size motion partitions" are HEVC toolset facts this standard defines.
  7. [dcvcfm24] Li, Li, Lu. Neural Video Compression with Feature Modulation (DCVC-FM). CVPR 2024, arXiv:2402.17414 -- abstract headline: 29.7 percent bitrate saving over the previous SOTA neural video codec under the single-intra-frame setting with 16 percent fewer MACs. publisher · read in our library knowledge/fetched/cmp_videocodec_dcvcfm24.html · pin ha127e0bee1abebea0a55a8339570014a261eff241357000780bdb40d3fe3cf02 · accessed 2026-08-18 · published-paperGrounds: The DCVC-FM (neural) column: "End-to-end neural codec" and "Learned entropy model (hyperprior)" code 2 are this paper's architecture (jointly trained model over learned features, which the entropy row's note names as the real win). The row note's "beats VVC by 20-40pct" is a read of the paper's VTM comparison tables, not of the abstract, whose stated number is the 29.7 percent above.
  8. [bjontegaard01] Bjontegaard, G. Calculation of average PSNR differences between RD-curves. ITU-T SG16 Q.6 VCEG document VCEG-M33, Austin TX, April 2001 (the BD-PSNR / BD-rate definition). publisher · read in our library knowledge/fetched/cmp_videocodec_bjontegaard01.doc · pin h37cfd46e88a3e8b880c95bc92753027c8fed5fde39947b0a50b17efc0e336014 · accessed 2026-08-18 · published-standardGrounds: "Compression efficiency (external BD-rate, ffmpeg oracle)": every +/- pct on this page (+159pct RTC, +140pct archival, -4.82pct avg vs the 817 baseline) is a Bjontegaard delta-rate over four rate points as this document defines; the mirror is the original ITU-hosted Word document.
  9. [msu-codec-comparison] Moscow State University Graphics and Media Lab. MSU Video Codecs Comparison (annual reports 2003-2025): objective Y-PSNR/SSIM/VMAF and subjective methodology over standard sequences at CIF through 4K, the reference public codec benchmark. publisher · read in our library knowledge/fetched/cmp_videocodec_msu.html · pin hf38da4818d416b566c54ccf26e07b3f66240dc00b81ec7a0d3b56b32052dbbc1 · accessed 2026-08-18 · published-paperGrounds: The @verdict claim "Every number on this page is MSU-methodology measured (ffmpeg Y-PSNR oracles)" and the akiyo/foreman/bus/mobile CIF sequence set used by nx_vcodec_rd_bench: this is the methodology page those measurements follow.

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