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uniapp/Google Chrome/Resources/video_grab.js

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+// 点击"下载视频"时执行：读取当前 <video> 的播放源，并把嗅探到的候选地址一起返回给宿主。
+(function () {
+  try {
+    var vids = Array.prototype.slice.call(document.querySelectorAll("video"));
+    var best = null;
+    for (var i = 0; i < vids.length; i++) {
+      var v = vids[i];
+      if (v.videoWidth > 0 || !isNaN(v.duration)) {
+        best = v;
+        break;
+      }
+    }
+    if (!best) best = vids[0];
+
+    var current = "";
+    var playable = true;
+    if (best) {
+      current = best.currentSrc || best.src || "";
+      if (!current) {
+        var s = best.querySelector && best.querySelector("source");
+        if (s) current = s.src || s.getAttribute("src") || "";
+      }
+      if (best.networkState === 0 || (best.msKeySystemLoaded && !best.src))
+        playable = false;
+    }
+
+    var title = document.title || "";
+    var h1 = document.querySelector("h1");
+    if (h1 && h1.innerText) title = h1.innerText;
+
+    var anchors = [];
+    var links = document.querySelectorAll("a[href]");
+    for (var j = 0; j < links.length; j++) {
+      var h = links[j].href;
+      if (
+        window.__reportMedia &&
+        /\.(mp4|flv|m3u8|mov|mkv|webm|ts)(\?|#|$)/i.test(h)
+      )
+        anchors.push(h);
+    }
+
+    return JSON.stringify({
+      current: current || "",
+      playable: playable,
+      usesMse: !!window.__usesMse || /^blob:/i.test(current),
+      title: title,
+      pageUrl: location.href,
+      sniffed: (window.__mediaUrls || []).slice(-60),
+      anchors: anchors.slice(-20),
+      m3u8Blobs: (window.__m3u8Blobs || []).slice(-1),
+    });
+  } catch (e) {
+    return JSON.stringify({
+      current: "",
+      title: document.title || "",
+      pageUrl: location.href,
+      error: String(e),
+    });
+  }
+})();