From 71b06bc64ab9b259157557c3625f87d468bda37e Mon Sep 17 00:00:00 2001
From: Kibi Kelburton <git@f0ck.it>
Date: Wed, 15 Jul 2026 15:40:25 +0200
Subject: [PATCH] f

---
 public/s/js/f0ckm.js | 37 ++++++-------------------------------
 1 file changed, 6 insertions(+), 31 deletions(-)

diff --git a/public/s/js/f0ckm.js b/public/s/js/f0ckm.js
index 9399eb8..eee6da0 100644
--- a/public/s/js/f0ckm.js
+++ b/public/s/js/f0ckm.js
@@ -3486,23 +3486,10 @@ window.cancelAnimFrame = (function () {
       } else {
         container.insertAdjacentHTML('beforeend', html);
 
-        // ── Prefetch video src immediately after DOM injection ──────────────
-        // <link rel="prefetch"> tells the browser to start downloading the
-        // video file now, racing against v0ck init so play() has data waiting.
-        const _vidEl = container.querySelector('#my-video[src]');
-        if (_vidEl && _vidEl.tagName === 'VIDEO') {
-          const _vidSrc = _vidEl.getAttribute('src');
-          if (_vidSrc) {
-            document.head.querySelector('link[data-v0ck-prefetch]')?.remove();
-            const _pLink = document.createElement('link');
-            _pLink.rel = 'prefetch';
-            _pLink.as = 'video';
-            _pLink.href = _vidSrc;
-            _pLink.setAttribute('data-v0ck-prefetch', '1');
-            document.head.appendChild(_pLink);
-            window.f0ckDebug('[v0ck] Prefetch link injected for', _vidSrc);
-          }
-        }
+        // Note: Prefetching video src immediately after DOM injection has been removed
+        // because concurrent media requests to the same URL in Chromium-based browsers
+        // trigger the single-writer HTTP cache lock, causing playback to stall.
+
       }
 
 
@@ -8485,20 +8472,8 @@ document.addEventListener('DOMContentLoaded', () => {
             thumb.appendChild(video);
             activeVideo = video;
 
-             // ── Prefetch first 512 KB to prime browser cache before click ──
-             // Low-priority range request fires while user is still hovering.
-             // On click, the item page video element hits cache instead of network.
-             if (!window._prefetchedVideos) window._prefetchedVideos = new Set();
-             const _pUrl = `/b/${file}`;
-             if (!window._prefetchedVideos.has(_pUrl)) {
-               window._prefetchedVideos.add(_pUrl);
-               fetch(_pUrl, {
-                 method: 'GET',
-                 headers: { 'Range': 'bytes=0-524287' },
-                 credentials: 'include',
-                 priority: 'low',
-               }).catch(() => { window._prefetchedVideos.delete(_pUrl); });
-             }
+             // Note: Hover prefetching of the first 512 KB has been removed to prevent
+             // Chromium cache locks and validation loop stalls on subsequent playback.
          };
 
          if (delay === 0) {