Videos in Win 11 av1 format cannot be opened #321

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Open
Videos in Win 11 av1 format cannot be opened#321

Description

@nowadota-dot
nowadota-dot
opened on Sep 15, 2025
  1. Every time I launch a video with the av1 codec, ScriptPlayer freezes for a second, but then the script loads and the video does not play.
  2. Win 11, Script player 1.2.2
  3. I installed scriptplayer exactly according to the instructions.
  4. I have installed Windows Media Player Feature Pack, LAV-Filters, K-Lite Codec Pack
  5. And I installed latest build from AppVeyor
  6. In all other players such as Media Player, KMPlayer, MPC-HC x64, videos are played back.
  7. The problem arose when I switched from Windows 10 to Windows 11.
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      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
       blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

      Skip to content
      Videos in Win 11 av1 format cannot be opened #321
      Open
      Open
      Videos in Win 11 av1 format cannot be opened#321
      Description
      @nowadota-dot
      nowadota-dot
      opened on Sep 15, 2025
      1. Every time I launch a video with the av1 codec, ScriptPlayer freezes for a second, but then the script loads and the video does not play.
      2. Win 11, Script player 1.2.2
      3. I installed scriptplayer exactly according to the instructions.
      4. I have installed Windows Media Player Feature Pack, LAV-Filters, K-Lite Codec Pack
      5. And I installed latest build from AppVeyor
      6. In all other players such as Media Player, KMPlayer, MPC-HC x64, videos are played back.
      7. The problem arose when I switched from Windows 10 to Windows 11.
      Image
      Activity
      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
      Metadata
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      Assignees
      No one assigned
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          None yet
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          Videos in Win 11 av1 format cannot be opened #321
          Open
          Open
          Videos in Win 11 av1 format cannot be opened#321
          Description
          @nowadota-dot
          nowadota-dot
          opened on Sep 15, 2025
          1. Every time I launch a video with the av1 codec, ScriptPlayer freezes for a second, but then the script loads and the video does not play.
          2. Win 11, Script player 1.2.2
          3. I installed scriptplayer exactly according to the instructions.
          4. I have installed Windows Media Player Feature Pack, LAV-Filters, K-Lite Codec Pack
          5. And I installed latest build from AppVeyor
          6. In all other players such as Media Player, KMPlayer, MPC-HC x64, videos are played back.
          7. The problem arose when I switched from Windows 10 to Windows 11.
          Image
          Activity
          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
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              None yet
              Development
              No branches or pull requests
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Videos in Win 11 av1 format cannot be opened #321
              Open
              Open
              Videos in Win 11 av1 format cannot be opened#321
              Description
              @nowadota-dot
              nowadota-dot
              opened on Sep 15, 2025
              1. Every time I launch a video with the av1 codec, ScriptPlayer freezes for a second, but then the script loads and the video does not play.
              2. Win 11, Script player 1.2.2
              3. I installed scriptplayer exactly according to the instructions.
              4. I have installed Windows Media Player Feature Pack, LAV-Filters, K-Lite Codec Pack
              5. And I installed latest build from AppVeyor
              6. In all other players such as Media Player, KMPlayer, MPC-HC x64, videos are played back.
              7. The problem arose when I switched from Windows 10 to Windows 11.
              Image
              Activity
              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                No labels
                No labels
                Projects
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                  No milestone
                  Relationships
                  None yet
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                  No branches or pull requests
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  Videos in Win 11 av1 format cannot be opened #321
                  Open
                  Open
                  Videos in Win 11 av1 format cannot be opened#321
                  Description
                  @nowadota-dot
                  nowadota-dot
                  opened on Sep 15, 2025
                  1. Every time I launch a video with the av1 codec, ScriptPlayer freezes for a second, but then the script loads and the video does not play.
                  2. Win 11, Script player 1.2.2
                  3. I installed scriptplayer exactly according to the instructions.
                  4. I have installed Windows Media Player Feature Pack, LAV-Filters, K-Lite Codec Pack
                  5. And I installed latest build from AppVeyor
                  6. In all other players such as Media Player, KMPlayer, MPC-HC x64, videos are played back.
                  7. The problem arose when I switched from Windows 10 to Windows 11.
                  Image
                  Activity
                  Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      Videos in Win 11 av1 format cannot be opened #321
                      Open
                      Open
                      Videos in Win 11 av1 format cannot be opened#321
                      Description
                      @nowadota-dot
                      nowadota-dot
                      opened on Sep 15, 2025
                      1. Every time I launch a video with the av1 codec, ScriptPlayer freezes for a second, but then the script loads and the video does not play.
                      2. Win 11, Script player 1.2.2
                      3. I installed scriptplayer exactly according to the instructions.
                      4. I have installed Windows Media Player Feature Pack, LAV-Filters, K-Lite Codec Pack
                      5. And I installed latest build from AppVeyor
                      6. In all other players such as Media Player, KMPlayer, MPC-HC x64, videos are played back.
                      7. The problem arose when I switched from Windows 10 to Windows 11.
                      Image
                      Activity
                      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        No labels
                        No labels
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          Videos in Win 11 av1 format cannot be opened #321
                          Open
                          Open
                          Videos in Win 11 av1 format cannot be opened#321
                          Description
                          @nowadota-dot
                          nowadota-dot
                          opened on Sep 15, 2025
                          1. Every time I launch a video with the av1 codec, ScriptPlayer freezes for a second, but then the script loads and the video does not play.
                          2. Win 11, Script player 1.2.2
                          3. I installed scriptplayer exactly according to the instructions.
                          4. I have installed Windows Media Player Feature Pack, LAV-Filters, K-Lite Codec Pack
                          5. And I installed latest build from AppVeyor
                          6. In all other players such as Media Player, KMPlayer, MPC-HC x64, videos are played back.
                          7. The problem arose when I switched from Windows 10 to Windows 11.
                          Image
                          Activity
                          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            No labels
                            No labels
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                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

                              Skip to content
                              Videos in Win 11 av1 format cannot be opened #321
                              Open
                              Open
                              Videos in Win 11 av1 format cannot be opened#321
                              Description
                              @nowadota-dot
                              nowadota-dot
                              opened on Sep 15, 2025
                              1. Every time I launch a video with the av1 codec, ScriptPlayer freezes for a second, but then the script loads and the video does not play.
                              2. Win 11, Script player 1.2.2
                              3. I installed scriptplayer exactly according to the instructions.
                              4. I have installed Windows Media Player Feature Pack, LAV-Filters, K-Lite Codec Pack
                              5. And I installed latest build from AppVeyor
                              6. In all other players such as Media Player, KMPlayer, MPC-HC x64, videos are played back.
                              7. The problem arose when I switched from Windows 10 to Windows 11.
                              Image
                              Activity
                              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                No labels
                                No labels
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions