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fix: focus mode uses fast JPEG refresh (200ms) — no codec, works everywhere

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Claus Lohmar 2026-08-05 13:06:36 +01:00
parent b68171f370
commit 901edcf594
1 changed files with 12 additions and 8 deletions
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20
public/app.js
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@ -94,21 +94,23 @@ function renderLiveGrid() {
// ── Focus Overlay ── // ── Focus Overlay ──
let focusIdx = -1; let focusIdx = -1;
let focusTimer = null;
function openFocus(cam) { function openFocus(cam) {
focusIdx = cameras.indexOf(cam); focusIdx = cameras.indexOf(cam);
const overlay = document.getElementById('focus-overlay'); const overlay = document.getElementById('focus-overlay');
overlay.classList.remove('hidden'); overlay.classList.remove('hidden');
updateFocus(); refreshFocus();
renderThumbs(); renderThumbs();
// Fast JPEG refresh — 200ms = ~5fps, smooth enough for monitoring.
focusTimer = setInterval(refreshFocus, 200);
} }
function updateFocus() { function refreshFocus() {
if (focusIdx < 0 || focusIdx >= cameras.length) return; if (focusIdx < 0 || focusIdx >= cameras.length) return;
const cam = cameras[focusIdx]; const cam = cameras[focusIdx];
document.getElementById('focus-title').textContent = cam.name; document.getElementById('focus-title').textContent = cam.name;
document.getElementById('focus-time').textContent = new Date().toLocaleTimeString() + ' live'; document.getElementById('focus-time').textContent = new Date().toLocaleTimeString() + ' live';
// go2rtc MJPEG stream proxied through NextNVR — same origin, no CORS issues.
const img = document.getElementById('focus-video'); const img = document.getElementById('focus-video');
img.src = `/stream/${cam.id}?type=sub&t=${Date.now()}`; img.src = `/recordings/${cam.name || cam.id}/latest.jpg?t=${Date.now()}`;
} }
function renderThumbs() { function renderThumbs() {
const strip = document.getElementById('focus-thumbs'); const strip = document.getElementById('focus-thumbs');
@ -124,20 +126,22 @@ function renderThumbs() {
} }
document.getElementById('focus-close').addEventListener('click', () => { document.getElementById('focus-close').addEventListener('click', () => {
document.getElementById('focus-overlay').classList.add('hidden'); document.getElementById('focus-overlay').classList.add('hidden');
if (focusTimer) { clearInterval(focusTimer); focusTimer = null; }
}); });
document.getElementById('focus-prev').addEventListener('click', () => { document.getElementById('focus-prev').addEventListener('click', () => {
if (focusIdx > 0) { focusIdx--; updateFocus(); renderThumbs(); } if (focusIdx > 0) { focusIdx--; refreshFocus(); renderThumbs(); }
}); });
document.getElementById('focus-next').addEventListener('click', () => { document.getElementById('focus-next').addEventListener('click', () => {
if (focusIdx < cameras.length - 1) { focusIdx++; updateFocus(); renderThumbs(); } if (focusIdx < cameras.length - 1) { focusIdx++; refreshFocus(); renderThumbs(); }
}); });
document.addEventListener('keydown', e => { document.addEventListener('keydown', e => {
if (document.getElementById('focus-overlay').classList.contains('hidden')) return; if (document.getElementById('focus-overlay').classList.contains('hidden')) return;
if (e.key === 'Escape') { if (e.key === 'Escape') {
document.getElementById('focus-overlay').classList.add('hidden'); document.getElementById('focus-overlay').classList.add('hidden');
if (focusTimer) { clearInterval(focusTimer); focusTimer = null; }
} }
if (e.key === 'ArrowLeft' && focusIdx > 0) { focusIdx--; updateFocus(); renderThumbs(); } if (e.key === 'ArrowLeft' && focusIdx > 0) { focusIdx--; refreshFocus(); renderThumbs(); }
if (e.key === 'ArrowRight' && focusIdx < cameras.length - 1) { focusIdx++; updateFocus(); renderThumbs(); } if (e.key === 'ArrowRight' && focusIdx < cameras.length - 1) { focusIdx++; refreshFocus(); renderThumbs(); }
}); });
// ── Playback ── // ── Playback ──