feat(quick-25): integrate useVideoAutoplay into 5 video nodes

- GenerateVideoNode: remove autoPlay, add ref={videoAutoplayRef}
- VideoTrimNode: add ref={videoAutoplayRef} (no autoPlay to remove)
- VideoStitchNode: remove autoPlay, add ref={videoAutoplayRef}
- EaseCurveNode: remove autoPlay, add ref={videoAutoplayRef}
- OutputNode: remove autoPlay from inline video, add ref={videoAutoplayRef}
- OutputNode lightbox video: unchanged (keeps autoPlay as intended)

src/components/nodes/EaseCurveNode.tsx

@@ -7,6 +7,7 @@ import { useWorkflowStore } from "@/store/workflowStore";
 import { EaseCurveNodeData } from "@/types";
 import { checkEncoderSupport } from "@/hooks/useStitchVideos";
 import { useVideoBlobUrl } from "@/hooks/useVideoBlobUrl";
+import { useVideoAutoplay } from "@/hooks/useVideoAutoplay";
 
 type EaseCurveNodeType = Node<EaseCurveNodeData, "easeCurve">;
 
@@ -19,6 +20,7 @@ export function EaseCurveNode({ id, data, selected }: NodeProps<EaseCurveNodeTyp
   const edges = useWorkflowStore((state) => state.edges);
   const removeEdge = useWorkflowStore((state) => state.removeEdge);
   const videoBlobUrl = useVideoBlobUrl(nodeData.outputVideo ?? null);
+  const videoAutoplayRef = useVideoAutoplay(id, selected);
 
   // Check encoder support on mount
   useEffect(() => {
@@ -182,9 +184,9 @@ export function EaseCurveNode({ id, data, selected }: NodeProps<EaseCurveNodeTyp
       {nodeData.outputVideo ? (
         <div className="relative w-full h-full">
           <video
+            ref={videoAutoplayRef}
             src={videoBlobUrl ?? undefined}
             controls
-            autoPlay
             loop
             muted
             className="absolute inset-0 w-full h-full object-contain rounded-lg"

src/components/nodes/GenerateVideoNode.tsx

@@ -13,6 +13,7 @@ import { useToast } from "@/components/Toast";
 import { getVideoDimensions, calculateNodeSizePreservingHeight } from "@/utils/nodeDimensions";
 import { ProviderBadge } from "./ProviderBadge";
 import { useVideoBlobUrl } from "@/hooks/useVideoBlobUrl";
+import { useVideoAutoplay } from "@/hooks/useVideoAutoplay";
 import { getModelPageUrl, getProviderDisplayName } from "@/utils/providerUrls";
 import { useInlineParameters } from "@/hooks/useInlineParameters";
 import { InlineParameterPanel } from "./InlineParameterPanel";
@@ -54,6 +55,7 @@ export function GenerateVideoNode({ id, data, selected }: NodeProps<GenerateVide
   const [isBrowseDialogOpen, setIsBrowseDialogOpen] = useState(false);
   const [isLoadingCarouselVideo, setIsLoadingCarouselVideo] = useState(false);
   const videoBlobUrl = useVideoBlobUrl(nodeData.outputVideo ?? null);
+  const videoAutoplayRef = useVideoAutoplay(id, selected);
 
   // Inline parameters infrastructure
   const { inlineParametersEnabled } = useInlineParameters();
@@ -646,10 +648,10 @@ export function GenerateVideoNode({ id, data, selected }: NodeProps<GenerateVide
         {nodeData.outputVideo ? (
           <>
             <video
+              ref={videoAutoplayRef}
               key={nodeData.videoHistory?.[nodeData.selectedVideoHistoryIndex || 0]?.id}
               src={videoBlobUrl ?? undefined}
               controls
-              autoPlay
               loop
               muted
               className="w-full h-full object-cover"

src/components/nodes/OutputNode.tsx

@@ -7,6 +7,7 @@ import { useCommentNavigation } from "@/hooks/useCommentNavigation";
 import { useWorkflowStore } from "@/store/workflowStore";
 import { OutputNodeData } from "@/types";
 import { useVideoBlobUrl } from "@/hooks/useVideoBlobUrl";
+import { useVideoAutoplay } from "@/hooks/useVideoAutoplay";
 
 type OutputNodeType = Node<OutputNodeData, "output">;
 
@@ -21,6 +22,7 @@ export function OutputNode({ id, data, selected }: NodeProps<OutputNodeType>) {
   const isRunning = useWorkflowStore((state) => state.isRunning);
   const [showLightbox, setShowLightbox] = useState(false);
   const previousEdgeCountRef = useRef<number | null>(null);
+  const videoAutoplayRef = useVideoAutoplay(id, selected);
 
   // Determine if content is audio
   const isAudio = useMemo(() => {
@@ -149,11 +151,11 @@ export function OutputNode({ id, data, selected }: NodeProps<OutputNodeType>) {
               >
                 {isVideo ? (
                   <video
+                    ref={videoAutoplayRef}
                     src={videoBlobUrl ?? undefined}
                     controls
                     loop
                     muted
-                    autoPlay
                     playsInline
                     className="w-full h-full object-cover"
                     onClick={(e) => e.stopPropagation()}

src/components/nodes/VideoStitchNode.tsx

@@ -7,6 +7,7 @@ import { useWorkflowStore } from "@/store/workflowStore";
 import { VideoStitchNodeData } from "@/types";
 import { checkEncoderSupport } from "@/hooks/useStitchVideos";
 import { useVideoBlobUrl } from "@/hooks/useVideoBlobUrl";
+import { useVideoAutoplay } from "@/hooks/useVideoAutoplay";
 
 type VideoStitchNodeType = Node<VideoStitchNodeData, "videoStitch">;
 
@@ -20,6 +21,7 @@ export function VideoStitchNode({ id, data, selected }: NodeProps<VideoStitchNod
   const isRunning = useWorkflowStore((state) => state.isRunning);
   const removeEdge = useWorkflowStore((state) => state.removeEdge);
   const videoBlobUrl = useVideoBlobUrl(nodeData.outputVideo ?? null);
+  const videoAutoplayRef = useVideoAutoplay(id, selected);
 
   // Check encoder support on mount
   useEffect(() => {
@@ -560,9 +562,9 @@ export function VideoStitchNode({ id, data, selected }: NodeProps<VideoStitchNod
         {nodeData.outputVideo && nodeData.status !== "loading" && (
           <div className="relative flex-1 min-h-0">
             <video
+              ref={videoAutoplayRef}
               src={videoBlobUrl ?? undefined}
               controls
-              autoPlay
               loop
               muted
               className="w-full h-full object-contain rounded"

src/components/nodes/VideoTrimNode.tsx

@@ -7,6 +7,7 @@ import { useWorkflowStore } from "@/store/workflowStore";
 import { VideoTrimNodeData } from "@/types";
 import { checkEncoderSupport } from "@/hooks/useStitchVideos";
 import { useVideoBlobUrl } from "@/hooks/useVideoBlobUrl";
+import { useVideoAutoplay } from "@/hooks/useVideoAutoplay";
 
 type VideoTrimNodeType = Node<VideoTrimNodeData, "videoTrim">;
 
@@ -29,6 +30,7 @@ export function VideoTrimNode({ id, data, selected }: NodeProps<VideoTrimNodeTyp
 
   // Track whether user wants to see source or output video
   const [showOutput, setShowOutput] = useState(false);
+  const videoAutoplayRef = useVideoAutoplay(id, selected);
 
   // Keep a ref to endTime so the metadata callback reads fresh state
   const endTimeRef = useRef(nodeData.endTime);
@@ -267,6 +269,7 @@ export function VideoTrimNode({ id, data, selected }: NodeProps<VideoTrimNodeTyp
         <div className="flex-1 min-h-0 relative">
           {previewUrl ? (
             <video
+              ref={videoAutoplayRef}
               key={previewUrl}
               src={previewBlobUrl ?? undefined}
               controls