diff --git a/.memory/worklog.json b/.memory/worklog.json
index e6c985a..6857c51 100644
--- a/.memory/worklog.json
+++ b/.memory/worklog.json
@@ -3147,6 +3147,19 @@
       "type": "session-heartbeat",
       "message": "Claude 会话活跃 · 最近命令：claude · 4 项未提交变更 · 最近提交：auto-save 2026-05-14 03:59 (~3)",
       "files_changed": 4
+    },
+    {
+      "ts": "2026-05-14T04:04:54+08:00",
+      "type": "commit",
+      "message": "auto-save 2026-05-14 04:04 (~6)",
+      "hash": "87f1182",
+      "files_changed": 6
+    },
+    {
+      "ts": "2026-05-13T20:08:50Z",
+      "type": "session-heartbeat",
+      "message": "Codex 会话活跃 · 最近命令：codex · 3 项未提交变更 · 最近提交：auto-save 2026-05-14 04:04 (~6)",
+      "files_changed": 3
     }
   ]
 }
diff --git a/docs/source-analysis.html b/docs/source-analysis.html
index a7e28c5..9e47a2e 100644
--- a/docs/source-analysis.html
+++ b/docs/source-analysis.html
@@ -817,6 +817,18 @@ api/main.py
         <h2>变更记录</h2>
         <p>这个记录不是 git log 的替代品。它记录“产品理解发生了什么变化、影响了哪些源码、你以后描述需求时该怎么说”。后续每次改功能都要补一条。</p>
         <div class="changelog">
+          <article class="change">
+            <header>
+              <h3>2026-05-14 · 自动抽帧快捷工具条移到缩略图上方</h3>
+              <span class="tag violet">Input</span>
+              <span class="tag blue">Frame Target</span>
+            </header>
+            <div class="body">
+              <p><strong>问题：</strong>自动抽帧入口放在 Input 卡片正文里，离视频缩略图和预览工作区较远；用户需要在看缩略图时快速切目标、切张数并反复抽取。</p>
+              <p><strong>改动：</strong>输入视频缩略图浮条上方新增自动抽帧快捷工具条，包含抽帧目标、张数快捷项和抽帧按钮。前端新增 <code>frameCount</code> 状态并把目标 / 张数传给 <code>analyzeJob</code>；已有关键帧时默认用 <code>mode=append</code> 追加抽取。</p>
+              <p><strong>影响：</strong><code>api/main.py</code>、<code>web/lib/api.ts</code>、<code>web/app/page.tsx</code>、<code>web/components/nodes/index.tsx</code>、<code>docs/source-analysis.html</code>。后端追加模式会保留已有关键帧，避开非常接近的时间点，并用新的 frame index 落盘。</p>
+            </div>
+          </article>
           <article class="change">
             <header>
               <h3>2026-05-14 · 自动抽帧支持目标化扫描</h3>
@@ -825,7 +837,7 @@ api/main.py
             </header>
             <div class="body">
               <p><strong>问题：</strong>单一“自动抽帧”无法表达这次要清晰人物、下次要转场变化或表情瞬间的不同目标；但把抽帧做成复杂参数面板会破坏 Input 卡片的轻量工作流。</p>
-              <p><strong>改动：</strong>Input 节点新增一个抽帧目标下拉，默认“综合关键帧”，可切换清晰主体、转场变化、表情瞬间、动作峰值。后端 <code>/jobs/{id}/analyze</code> 新增 <code>target</code> 参数，先低清低帧率扫描候选，再按目标评分、pHash 去重、时序分桶，最后只对选中的时间点从原视频抽高质量关键帧。</p>
+              <p><strong>改动：</strong>Input 节点新增抽帧目标，默认“综合关键帧”，可切换清晰主体、转场变化、表情瞬间、动作峰值。后端 <code>/jobs/{id}/analyze</code> 新增 <code>target</code> 参数，先低清低帧率扫描候选，再按目标评分、pHash 去重、时序分桶，最后只对选中的时间点从原视频抽高质量关键帧。</p>
               <p><strong>影响：</strong><code>api/main.py</code>、<code>web/lib/api.ts</code>、<code>web/app/page.tsx</code>、<code>web/components/nodes/index.tsx</code>、<code>docs/source-analysis.html</code>。当前“人物/动物表情”是本地近似评分，后续可把候选小图接入视觉模型重排。</p>
             </div>
           </article>
diff --git a/web/app/page.tsx b/web/app/page.tsx
index d21beab..73de92b 100644
--- a/web/app/page.tsx
+++ b/web/app/page.tsx
@@ -92,8 +92,8 @@ export default function Home() {
   const job = useMemo(() => jobs.find((j) => j.id === activeJobId) ?? null, [jobs, activeJobId])
   const [submitting, setSubmitting] = useState(false)
   const [analyzing, setAnalyzing] = useState(false)
-  const [frameTarget, setFrameTarget] = useState<FrameExtractTarget>("balanced")
-  const [frameCount, setFrameCount] = useState(5)
+  const [frameTargets, setFrameTargets] = useState<Record<string, FrameExtractTarget>>({})
+  const [frameCounts, setFrameCounts] = useState<Record<string, number>>({})
   const [selectedFrames, setSelectedFrames] = useState<Set<number>>(new Set())
   const [expandedFrame, setExpandedFrame] = useState<number | null>(null)
   const [framePanelScale, setFramePanelScale] = useState(1)
@@ -167,27 +167,43 @@ export default function Home() {
     }
   }, [addJob])
 
-  const handleAnalyze = useCallback(async (options?: { mode?: FrameExtractMode }) => {
-    if (!job) return
-    const mode = options?.mode ?? (job.frames.length > 0 ? "append" : "replace")
+  const handleAnalyzeJob = useCallback(async (jobId: string, options?: { mode?: FrameExtractMode }) => {
+    const targetJob = jobs.find((item) => item.id === jobId)
+    if (!targetJob) return
+    const frameTarget = frameTargets[jobId] ?? "balanced"
+    const frameCount = frameCounts[jobId] ?? 5
+    const mode = options?.mode ?? (targetJob.frames.length > 0 ? "append" : "replace")
+    setActiveJobId(jobId)
     setAnalyzing(true)
     if (mode === "replace") setSelectedFrames(new Set())
     try {
-      await analyzeJob(job.id, frameCount, frameTarget, mode)
+      await analyzeJob(jobId, frameCount, frameTarget, mode)
       toast.info(`${mode === "append" ? "追加抽帧" : "开始解析"}：${FRAME_TARGET_LABELS[frameTarget]} · ${frameCount} 张`)
-      // 乐观更新本地状态，让轮询 useEffect 重新启动
-      setJob((prev) => prev ? {
-        ...prev,
+      setJobs((prev) => prev.map((item) => item.id === jobId ? {
+        ...item,
         status: "splitting",
         message: `${mode === "append" ? "追加抽帧中" : "拆轨中"} · ${FRAME_TARGET_LABELS[frameTarget]}…`,
         progress: 30,
-      } : prev)
+      } : item))
     } catch (e) {
       toast.error("解析触发失败：" + (e instanceof Error ? e.message : String(e)))
     } finally {
       setAnalyzing(false)
     }
-  }, [job?.id, job?.frames.length, frameCount, frameTarget])
+  }, [jobs, frameCounts, frameTargets])
+
+  const handleAnalyze = useCallback(async (options?: { mode?: FrameExtractMode }) => {
+    if (!job) return
+    await handleAnalyzeJob(job.id, options)
+  }, [job?.id, handleAnalyzeJob])
+
+  const handleFrameTargetChange = useCallback((jobId: string, target: FrameExtractTarget) => {
+    setFrameTargets((prev) => ({ ...prev, [jobId]: target }))
+  }, [])
+
+  const handleFrameCountChange = useCallback((jobId: string, count: number) => {
+    setFrameCounts((prev) => ({ ...prev, [jobId]: Math.max(1, Math.min(20, count)) }))
+  }, [])
 
   const handleAddManualFrameForJob = useCallback(async (jobId: string, t: number) => {
     try {
@@ -511,8 +527,8 @@ export default function Home() {
     activeJobId,
     submitting,
     analyzing,
-    frameTarget,
-    frameCount,
+    frameTargets,
+    frameCounts,
     selectedFrames,
     expandedFrame,
     framePanelScale,
@@ -524,8 +540,9 @@ export default function Home() {
     onSubmitUrl: handleSubmit,
     onUploadFile: handleUpload,
     onAnalyze: handleAnalyze,
-    onFrameTargetChange: setFrameTarget,
-    onFrameCountChange: setFrameCount,
+    onAnalyzeJob: handleAnalyzeJob,
+    onFrameTargetChange: handleFrameTargetChange,
+    onFrameCountChange: handleFrameCountChange,
     onToggleFrame: handleToggleFrame,
     onExpandFrame: setExpandedFrame,
     onOpenFramePanel: handleOpenFramePanel,
@@ -555,7 +572,7 @@ export default function Home() {
     onCopyImage: handleCopyImage,
     pinnedNodes,
     onToggleNodePin: handleToggleNodePin,
-  }), [job, jobs, activeJobId, submitting, analyzing, frameTarget, frameCount, selectedFrames, expandedFrame, framePanelScale, framePanelPinned, framePanelDock, videoPanelJobId, videoPanelScale, videoPanelDock, handleSubmit, handleUpload, handleAnalyze, handleToggleFrame, handleOpenFramePanel, handleFramePanelScaleChange, handleAddManualFrame, handleAddManualFrameForJob, handleOpenVideoPanel, handleVideoPanelScaleChange, handleSwitchJob, setJob, handleDeleteJob, handleDeleteFrame, handleDeleteFrameForJob, handleDeleteGenerated, handleDeleteVideo, handleDeleteCutout, handleCopyImage, pinnedNodes, handleToggleNodePin])
+  }), [job, jobs, activeJobId, submitting, analyzing, frameTargets, frameCounts, selectedFrames, expandedFrame, framePanelScale, framePanelPinned, framePanelDock, videoPanelJobId, videoPanelScale, videoPanelDock, handleSubmit, handleUpload, handleAnalyze, handleAnalyzeJob, handleFrameTargetChange, handleFrameCountChange, handleToggleFrame, handleOpenFramePanel, handleFramePanelScaleChange, handleAddManualFrame, handleAddManualFrameForJob, handleOpenVideoPanel, handleVideoPanelScaleChange, handleSwitchJob, setJob, handleDeleteJob, handleDeleteFrame, handleDeleteFrameForJob, handleDeleteGenerated, handleDeleteVideo, handleDeleteCutout, handleCopyImage, pinnedNodes, handleToggleNodePin])
 
   // 用 useNodesState 让 ReactFlow 自己管位置（避免轮询时重置 drag）
   const savedSizes = useMemo(() => loadNodeSizes(), [])
diff --git a/web/components/nodes/index.tsx b/web/components/nodes/index.tsx
index 14b32a7..0def9a0 100644
--- a/web/components/nodes/index.tsx
+++ b/web/components/nodes/index.tsx
@@ -29,8 +29,8 @@ export interface NodeData {
   activeJobId: string | null
   submitting: boolean
   analyzing: boolean
-  frameTarget: FrameExtractTarget
-  frameCount: number
+  frameTargets: Record<string, FrameExtractTarget>
+  frameCounts: Record<string, number>
   selectedFrames: Set<number>
   expandedFrame: number | null
   framePanelScale?: number
@@ -42,8 +42,9 @@ export interface NodeData {
   onSubmitUrl: (url: string) => void
   onUploadFile: (file: File) => void
   onAnalyze: (options?: { mode?: FrameExtractMode }) => void
-  onFrameTargetChange: (target: FrameExtractTarget) => void
-  onFrameCountChange: (count: number) => void
+  onAnalyzeJob: (jobId: string, options?: { mode?: FrameExtractMode }) => void
+  onFrameTargetChange: (jobId: string, target: FrameExtractTarget) => void
+  onFrameCountChange: (jobId: string, count: number) => void
   onToggleFrame: (idx: number) => void
   onExpandFrame: (idx: number) => void
   onOpenFramePanel?: (idx: number) => void  // 打开/找回画布内关键帧详情面板
@@ -429,7 +430,7 @@ function FrameExtractQuickBar({
 
   return (
     <div
-      className="nodrag nopan flex w-full items-center gap-1.5 rounded-lg border border-white/16 bg-zinc-950/88 p-1.5 text-white shadow-2xl shadow-violet-950/30 backdrop-blur"
+      className="nodrag nopan w-full rounded-lg border border-white/16 bg-zinc-950/90 p-1.5 text-white shadow-2xl shadow-violet-950/30 backdrop-blur"
       onClick={(e) => e.stopPropagation()}
       onMouseDown={(e) => e.stopPropagation()}
     >
@@ -437,7 +438,7 @@ function FrameExtractQuickBar({
         value={target}
         disabled={disabled}
         onChange={(e) => onTargetChange(e.target.value as FrameExtractTarget)}
-        className="h-8 min-w-0 flex-1 cursor-pointer rounded-md border border-white/12 bg-white/[0.08] px-2 text-[11px] font-semibold text-white outline-none transition focus:ring-2 focus:ring-violet-300/70 disabled:cursor-not-allowed disabled:opacity-45"
+        className="h-7 w-full cursor-pointer rounded-md border border-white/12 bg-white/[0.08] px-1.5 text-[10px] font-semibold text-white outline-none transition focus:ring-2 focus:ring-violet-300/70 disabled:cursor-not-allowed disabled:opacity-45"
         aria-label="选择自动抽帧目标"
         title={option.hint}
       >
@@ -445,32 +446,29 @@ function FrameExtractQuickBar({
           <option key={item.value} value={item.value}>{item.label}</option>
         ))}
       </select>
-      <div className="flex shrink-0 rounded-md border border-white/12 bg-white/[0.06] p-0.5" aria-label="选择抽帧张数">
-        {FRAME_COUNT_OPTIONS.map((item) => (
-          <button
-            key={item}
-            type="button"
-            disabled={disabled}
-            onClick={() => onCountChange(item)}
-            title={`抽 ${item} 张`}
-            className={`h-7 min-w-7 rounded px-1.5 text-[11px] font-bold transition disabled:cursor-not-allowed disabled:opacity-45 ${
-              count === item ? "bg-white text-violet-700" : "text-white/72 hover:bg-white/[0.10] hover:text-white"
-            }`}
-          >
-            {item}
-          </button>
-        ))}
+      <div className="mt-1 flex gap-1">
+        <select
+          value={count}
+          disabled={disabled}
+          onChange={(e) => onCountChange(Number(e.target.value))}
+          className="h-7 min-w-0 flex-1 cursor-pointer rounded-md border border-white/12 bg-white/[0.08] px-1.5 text-[10px] font-bold text-white outline-none transition focus:ring-2 focus:ring-violet-300/70 disabled:cursor-not-allowed disabled:opacity-45"
+          aria-label="选择抽帧张数"
+        >
+          {FRAME_COUNT_OPTIONS.map((item) => (
+            <option key={item} value={item}>{item} 张</option>
+          ))}
+        </select>
+        <button
+          type="button"
+          disabled={disabled}
+          onClick={onAnalyze}
+          title={hasFrames ? "追加自动抽帧" : "自动抽帧"}
+          className="inline-flex h-7 shrink-0 items-center justify-center gap-1 rounded-md bg-gradient-to-r from-indigo-500 to-violet-500 px-2 text-[10.5px] font-bold text-white shadow-lg shadow-violet-950/35 transition hover:opacity-95 disabled:cursor-not-allowed disabled:opacity-45"
+        >
+          {running ? <Loader2 className="h-3 w-3 animate-spin" /> : <Scissors className="h-3 w-3" />}
+          {running ? "抽取" : hasFrames ? "追加" : "抽帧"}
+        </button>
       </div>
-      <button
-        type="button"
-        disabled={disabled}
-        onClick={onAnalyze}
-        title={hasFrames ? "追加自动抽帧" : "自动抽帧"}
-        className="inline-flex h-8 shrink-0 items-center justify-center gap-1.5 rounded-md bg-gradient-to-r from-indigo-500 to-violet-500 px-3 text-[11.5px] font-bold text-white shadow-lg shadow-violet-950/35 transition hover:opacity-95 disabled:cursor-not-allowed disabled:opacity-45"
-      >
-        {running ? <Loader2 className="h-3.5 w-3.5 animate-spin" /> : <Scissors className="h-3.5 w-3.5" />}
-        {running ? "抽取中" : hasFrames ? "追加" : "抽帧"}
-      </button>
     </div>
   )
 }
@@ -512,21 +510,7 @@ export function InputNode({ data, selected }: NodeProps<{ data: NodeData }> | an
       {/* 多视频缩略图浮条 — 「+」在最左，job 按时间倒序（最新靠左高亮），统一高度 64，宽度按视频原比例，一行横滚。
           浮条宽度 = 节点宽度（节点拖宽后浮条同步变宽，可见更多缩略图，少滚动）。 */}
       {d.jobs.length > 0 && (
-        <FloatingThumbnailStrip
-          label="输入视频缩略图横向滑动条"
-          toolbar={hasVideo && job ? (
-            <FrameExtractQuickBar
-              target={d.frameTarget}
-              count={d.frameCount}
-              disabled={isAnalyzing || d.analyzing || !job.video_url}
-              running={isAnalyzing || d.analyzing}
-              hasFrames={hasFrames}
-              onTargetChange={d.onFrameTargetChange}
-              onCountChange={d.onFrameCountChange}
-              onAnalyze={() => d.onAnalyze({ mode: hasFrames ? "append" : "replace" })}
-            />
-          ) : null}
-        >
+        <FloatingThumbnailStrip label="输入视频缩略图横向滑动条">
           {/* + 再上传一个（放在最前面） */}
           <button
             type="button"
@@ -541,68 +525,92 @@ export function InputNode({ data, selected }: NodeProps<{ data: NodeData }> | an
             const isActive = j.id === d.activeJobId
             const ready = !!j.video_url
             const aspectStr = ready ? `${j.width}/${j.height}` : "9/16"
+            const thumbWidth = ready && j.height ? Math.max(118, Math.round(THUMBNAIL_HEIGHT * j.width / j.height)) : 118
+            const target = d.frameTargets[j.id] ?? "balanced"
+            const count = d.frameCounts[j.id] ?? 5
+            const jHasFrames = j.frames.length > 0
+            const jRunning = ["splitting", "transcribing"].includes(j.status)
             return (
               <div
                 key={j.id}
-                className={`group relative shrink-0 rounded-md overflow-visible border shadow-lg transition hover:-translate-y-0.5 ${
-                  isActive ? "border-violet-400 ring-2 ring-violet-400/60" : "border-white/25"
-                }`}
-                style={{ height: THUMBNAIL_HEIGHT, aspectRatio: aspectStr }}
-                onMouseEnter={(e) => setHoverPreviewJob({ id: j.id, ...canvasThumbnailAnchor(rootRef.current, e.currentTarget) })}
-                onMouseLeave={() => setHoverPreviewJob(null)}
+                className="group relative flex shrink-0 flex-col gap-1.5"
+                style={{ width: thumbWidth }}
               >
-                <button
-                  type="button"
-                  onClick={(e) => {
-                    e.stopPropagation()
-                    if (!ready) return
-                    setPinnedPreviewJob(null)
-                    if (!isActive) d.onSwitchJob(j.id)
-                    d.onOpenVideoPanel?.(j.id)
-                  }}
-                  onDoubleClick={(e) => {
-                    e.stopPropagation()
-                    if (ready) {
-                      setPinnedPreviewJob(null)
-                      if (!isActive) d.onSwitchJob(j.id)
-                      d.onOpenVideoPanel?.(j.id)
-                    }
-                  }}
-                  title={ready ? `${j.width}×${j.height} · ${(j.duration ?? 0).toFixed(1)}s · 单击打开抽帧面板` : "下载中…"}
-                  className="absolute inset-0 w-full h-full overflow-hidden rounded-md"
+                {ready ? (
+                  <FrameExtractQuickBar
+                    target={target}
+                    count={count}
+                    disabled={jRunning || d.analyzing}
+                    running={jRunning}
+                    hasFrames={jHasFrames}
+                    onTargetChange={(next) => d.onFrameTargetChange(j.id, next)}
+                    onCountChange={(next) => d.onFrameCountChange(j.id, next)}
+                    onAnalyze={() => d.onAnalyzeJob(j.id, { mode: jHasFrames ? "append" : "replace" })}
+                  />
+                ) : (
+                  <div className="h-[72px] rounded-lg border border-white/10 bg-white/[0.03]" />
+                )}
+                <div
+                  className={`relative rounded-md overflow-visible border shadow-lg transition hover:-translate-y-0.5 ${
+                    isActive ? "border-violet-400 ring-2 ring-violet-400/60" : "border-white/25"
+                  }`}
+                  style={{ height: THUMBNAIL_HEIGHT, aspectRatio: aspectStr }}
+                  onMouseEnter={(e) => setHoverPreviewJob({ id: j.id, ...canvasThumbnailAnchor(rootRef.current, e.currentTarget) })}
+                  onMouseLeave={() => setHoverPreviewJob(null)}
                 >
-                  {ready ? (
-                    <video
-                      src={videoUrl(j.id)}
-                      muted
-                      loop
-                      playsInline
-                      preload="metadata"
-                      poster=""
-                      className="block w-full h-full object-cover bg-black"
-                    />
-                  ) : (
-                    <div className="w-full h-full bg-black/60 flex items-center justify-center">
-                      <Loader2 className="h-4 w-4 animate-spin text-white/60" />
-                    </div>
-                  )}
-                  <div className="absolute bottom-0.5 right-0.5 bg-black/70 text-white text-[9px] font-mono px-1 py-0.5 rounded">
-                    {ready ? `${(j.duration ?? 0).toFixed(1)}s` : "…"}
-                  </div>
-                </button>
-                {d.onDeleteJob && (
                   <button
                     type="button"
                     onClick={(e) => {
                       e.stopPropagation()
-                      setDeleteJobTarget(j)
+                      if (!ready) return
+                      setPinnedPreviewJob(null)
+                      if (!isActive) d.onSwitchJob(j.id)
+                      d.onOpenVideoPanel?.(j.id)
                     }}
-                    title="删除这个输入视频"
-                    className="absolute right-1.5 top-1.5 z-[70] inline-flex h-7 w-7 items-center justify-center rounded-full bg-rose-500/95 text-white shadow-lg backdrop-blur transition hover:scale-110 hover:bg-rose-400"
+                    onDoubleClick={(e) => {
+                      e.stopPropagation()
+                      if (ready) {
+                        setPinnedPreviewJob(null)
+                        if (!isActive) d.onSwitchJob(j.id)
+                        d.onOpenVideoPanel?.(j.id)
+                      }
+                    }}
+                    title={ready ? `${j.width}×${j.height} · ${(j.duration ?? 0).toFixed(1)}s · 单击打开抽帧面板` : "下载中…"}
+                    className="absolute inset-0 w-full h-full overflow-hidden rounded-md"
                   >
-                    <Trash2 className="h-3.5 w-3.5" />
+                    {ready ? (
+                      <video
+                        src={videoUrl(j.id)}
+                        muted
+                        loop
+                        playsInline
+                        preload="metadata"
+                        poster=""
+                        className="block w-full h-full object-cover bg-black"
+                      />
+                    ) : (
+                      <div className="w-full h-full bg-black/60 flex items-center justify-center">
+                        <Loader2 className="h-4 w-4 animate-spin text-white/60" />
+                      </div>
+                    )}
+                    <div className="absolute bottom-0.5 right-0.5 bg-black/70 text-white text-[9px] font-mono px-1 py-0.5 rounded">
+                      {ready ? `${(j.duration ?? 0).toFixed(1)}s` : "…"}
+                    </div>
                   </button>
-                )}
+                  {d.onDeleteJob && (
+                    <button
+                      type="button"
+                      onClick={(e) => {
+                        e.stopPropagation()
+                        setDeleteJobTarget(j)
+                      }}
+                      title="删除这个输入视频"
+                      className="absolute right-1.5 top-1.5 z-[70] inline-flex h-7 w-7 items-center justify-center rounded-full bg-rose-500/95 text-white shadow-lg backdrop-blur transition hover:scale-110 hover:bg-rose-400"
+                    >
+                      <Trash2 className="h-3.5 w-3.5" />
+                    </button>
+                  )}
+                </div>
               </div>
             )
           })}