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uniapp/Google Chrome/Resources/video_grab.js

@@ -1,13 +1,70 @@
-// 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。
+// 点击"下载视频"时执行：优先从页面内嵌数据 RENDER_DATA 精确提取当前视频地址，
+// 其次才用嗅探列表兜底。
 (function () {
   try {
+    var pageUrl = location.href;
+
+    // 从 URL 提取视频 ID
+    var videoId = "";
+    var m = pageUrl.match(/[?&]modal_id=(\d+)/);
+    if (m) videoId = m[1];
+    if (!videoId) {
+      var m0 = pageUrl.match(/[?&]aweme_id=(\d+)/);
+      if (m0) videoId = m0[1];
+    }
+    if (!videoId) {
+      var m2 = pageUrl.match(/\/(?:video|note)\/(\d+)/);
+      if (m2) videoId = m2[1];
+    }
+
+    // === 方案一：从 RENDER_DATA 里精确找当前视频的播放地址 ===
+    var renderVideoUrl = "";
+    var renderAudioUrl = "";
+    try {
+      var rd = document.getElementById("RENDER_DATA");
+      if (rd && rd.textContent) {
+        var decoded = decodeURIComponent(rd.textContent);
+        // 在 JSON 里找 aweme_id 等于 videoId 的节点，提取其 video.play_addr 或 play_addr 列表
+        // 用正则粗匹配，避免完整 JSON 解析的复杂性
+        var idx = decoded.indexOf(videoId);
+        while (idx >= 0) {
+          // 在这个 ID 附近找 playApi / play_addr / url_list
+          var chunk = decoded.substring(Math.max(0, idx - 200), idx + 5000);
+          // 找 DASH 格式的视频轨和音频轨
+          var vMatches = chunk.match(/https?:\/\/[^"\\]+media-video[^"\\]*/gi);
+          var aMatches = chunk.match(/https?:\/\/[^"\\]+media-audio[^"\\]*/gi);
+          if (vMatches && vMatches.length) {
+            renderVideoUrl = vMatches[vMatches.length - 1];
+            if (aMatches && aMatches.length) {
+              renderAudioUrl = aMatches[aMatches.length - 1];
+            }
+            break;
+          }
+          // 找普通 mp4 直链
+          var mp4Matches = chunk.match(/https?:\/\/[^"\\]*\.mp4[^"\\]*/gi);
+          if (mp4Matches && mp4Matches.length) {
+            renderVideoUrl = mp4Matches[mp4Matches.length - 1];
+            break;
+          }
+          idx = decoded.indexOf(videoId, idx + 1);
+        }
+      }
+    } catch (e) { /* RENDER_DATA 解析失败就走嗅探兜底 */ }
+
+    // === 方案二：选正在播放的 <video> 元素 ===
     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 (!v.paused && v.currentTime > 0) { best = v; break; }
+    }
+    if (!best) {
+      for (var j = 0; j < vids.length; j++) {
+        var v2 = vids[j];
+        if (v2.videoWidth > 0 || (!isNaN(v2.duration) && v2.duration > 0 && v2.currentTime > 0)) {
+          best = v2;
+          break;
+        }
       }
     }
     if (!best) best = vids[0];
@@ -20,33 +77,48 @@
         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;
+      if (best.networkState === 0) playable = false;
+    }
+
+    // === 方案三：嗅探列表兜底 ===
+    var all = window.__mediaUrls || [];
+    var videoTracks = [];
+    var audioTracks = [];
+    var otherMedia = [];
+    for (var k = 0; k < all.length; k++) {
+      var u = all[k];
+      if (/media-video/i.test(u)) videoTracks.push(u);
+      else if (/media-audio/i.test(u)) audioTracks.push(u);
+      else otherMedia.push(u);
+    }
+
+    function pickLast(arr) {
+      return arr.length ? arr[arr.length - 1] : "";
+    }
+
+    var dashVideo = pickLast(videoTracks);
+    var dashAudio = pickLast(audioTracks);
+
+    // 如果 RENDER_DATA 找到了，优先用它
+    if (renderVideoUrl) {
+      dashVideo = renderVideoUrl;
+      if (renderAudioUrl) dashAudio = renderAudioUrl;
     }
 
     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),
+      pageUrl: pageUrl,
+      videoId: videoId,
+      sniffed: otherMedia.slice(-60),
+      dashVideo: dashVideo,
+      dashAudio: dashAudio,
       m3u8Blobs: (window.__m3u8Blobs || []).slice(-1),
     });
   } catch (e) {