Side quest 1: give four scenes art direction other than grain
Classic Wave, Silk Ribbon, Kaleido Tunnel and Slow Orb all declared the `style` trait and honoured it with `col += sigGrain(uv)` and nothing else. A declared trait is a contract — the disqualification rule in Personality.js is the only thing keeping off-design scenes out of a track — so honouring it with dirt meant these four could not take the `texture: 0` opt-out the grain work introduced. Phase 9 measured their style response at exactly 0. They sat at texture: 0.35 as a stopgap, which kept speckle on the library's cleanest scenes purely to keep a gate green. Each already had the knob; it just was not wired to the track: - Classic Wave contrasts its wave through a bare smoothstep(0.2, 0.8). The transition width now comes from u_sigSoft and u_sigLine, centred on 0.5 so changing the hand does not change the exposure. Crest concentration is driven separately by u_sigLine, because a track is free to sample the scene's own u_softness at zero and the art direction must still show. - Silk Ribbon's strand width is u_sigLine and its falloff exponent u_sigSoft: a sharp track gets a filament with a defined edge, a soft one a haze. - Kaleido Tunnel drew its grid against a bare 0.42 — a line weight with no name. It is now a weight and a feather, both from the track. - Slow Orb's body edge multiplies the scene's softness by the video's, and gains a sigEdge rim so a sharp-handed track gets a defined limb. All four are now texture: 0. Style response measured against a maximally soft-handed versus maximally sharp-handed personality: Classic Wave 111, Silk Ribbon 216, Kaleido Tunnel 206, Slow Orb 102, out of 255 — previously 0. 104/104 checks pass including the slow set. See SIDE-QUESTS.md §1. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Dejvino
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<!DOCTYPE html>
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<html>
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<head><title>encoder probe</title></head>
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<body>
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<pre id="out">running…</pre>
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<canvas id="c" width="1920" height="1080" style="display:none"></canvas>
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<script type="module">
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const out = document.getElementById('out');
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const log = (m) => { out.textContent += m + '\n'; console.log(m); };
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// A cheap animated source. The point is to test the ENCODER, so the frames must
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// be genuinely different (a static source would let the encoder coast) but must
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// cost nothing to produce — no shaders, no Show, no GPU readback.
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const canvas = document.getElementById('c');
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const ctx = canvas.getContext('2d');
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function drawFrame(i) {
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ctx.fillStyle = `hsl(${(i * 3) % 360} 60% 12%)`;
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ctx.fillRect(0, 0, 1920, 1080);
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ctx.fillStyle = `hsl(${(i * 7) % 360} 80% 60%)`;
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for (let k = 0; k < 40; k++) {
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const x = ((i * 11 + k * 137) % 1920);
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const y = ((i * 5 + k * 271) % 1080);
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ctx.fillRect(x, y, 90, 90);
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}
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ctx.fillStyle = '#fff';
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ctx.font = '120px monospace';
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ctx.fillText(String(i), 60, 200);
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}
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const FPS = 60;
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const FRAMES = 600;
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const WIDTH = 1920, HEIGHT = 1080, BITRATE = 16_000_000;
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const MAX_QUEUE = 8;
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function waitForQueue(encoder) {
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if (encoder.encodeQueueSize < MAX_QUEUE) return Promise.resolve();
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return new Promise((resolve) => {
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const onDequeue = () => {
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if (encoder.encodeQueueSize < MAX_QUEUE) {
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encoder.removeEventListener('dequeue', onDequeue);
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resolve();
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}
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};
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encoder.addEventListener('dequeue', onDequeue);
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});
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}
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async function run(label, extra) {
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const config = {
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codec: 'avc1.640034',
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width: WIDTH, height: HEIGHT, bitrate: BITRATE, framerate: FPS,
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avc: { format: 'avc' },
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...extra,
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};
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let support;
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try {
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support = await VideoEncoder.isConfigSupported(config);
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} catch (e) {
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log(`${label.padEnd(34)} isConfigSupported threw: ${e.message}`);
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return;
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}
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if (!support.supported) {
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log(`${label.padEnd(34)} UNSUPPORTED`);
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return;
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}
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let outputs = 0;
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let keyframes = 0;
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const stamps = [];
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let error = null;
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const encoder = new VideoEncoder({
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output: (chunk) => {
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outputs++;
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if (chunk.type === 'key') keyframes++;
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stamps.push(chunk.timestamp);
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},
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error: (e) => { error = e; },
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});
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encoder.configure(config);
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const t0 = performance.now();
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let encoded = 0;
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for (let i = 0; i < FRAMES; i++) {
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if (error) break;
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drawFrame(i);
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await waitForQueue(encoder);
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const frame = new VideoFrame(canvas, {
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timestamp: Math.round((i * 1e6) / FPS),
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duration: Math.round(1e6 / FPS),
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});
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encoder.encode(frame, { keyFrame: i % (FPS * 2) === 0 });
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frame.close();
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encoded++;
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if (i % 10 === 0) await new Promise((r) => setTimeout(r, 0));
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}
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try { await encoder.flush(); } catch (e) { error = error || e; }
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const ms = performance.now() - t0;
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try { encoder.close(); } catch { /* already closed */ }
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// Do NOT sort: the order chunks ARRIVE in is the whole point. WebCodecs
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// delivers in decode order, so a timestamp that goes backwards means the
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// encoder emitted B-frames — and a muxer handed presentation timestamps as
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// if they were decode timestamps will reject exactly those chunks.
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const period = 1e6 / FPS;
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const backwards = stamps.filter((t, i) => i > 0 && t < stamps[i - 1]).length;
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const sorted = stamps.slice().sort((a, b) => a - b);
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const gaps = sorted.slice(1).map((t, i) => Math.round((t - sorted[i]) / period));
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const maxGap = gaps.length ? Math.max(...gaps) : 0;
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const verdict = error ? `ERROR ${error.message}`
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: backwards ? `REORDERED — ${backwards} chunks arrived out of order (B-frames)`
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: outputs === encoded ? 'OK'
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: `DROPPED ${encoded - outputs} (${((1 - outputs / encoded) * 100).toFixed(0)}%)`;
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log(`${label.padEnd(34)} in ${encoded} → out ${outputs} keys ${keyframes} maxGap ${maxGap} reordered ${backwards} ${(ms / 1000).toFixed(1)}s ${verdict}`);
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}
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log(`source ${WIDTH}×${HEIGHT} @ ${FPS} · ${FRAMES} frames · bitrate ${BITRATE / 1e6} Mbps\n`);
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await run('default (no hints)', {});
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await run('prefer-hardware', { hardwareAcceleration: 'prefer-hardware' });
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await run('prefer-software', { hardwareAcceleration: 'prefer-software' });
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await run('latency=realtime', { latencyMode: 'realtime' });
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await run('prefer-hardware + realtime', { hardwareAcceleration: 'prefer-hardware', latencyMode: 'realtime' });
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await run('prefer-software + realtime', { hardwareAcceleration: 'prefer-software', latencyMode: 'realtime' });
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await run('baseline avc1.42003e', { codec: 'avc1.42003e' });
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log('\nDONE');
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window.__DONE__ = true;
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</script>
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</body>
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</html>
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