1

src/tools/QwenSpriteSheetTool.tsx

@@ -405,6 +405,7 @@ export default function QwenSpriteSheetTool() {
     setSheetStatus(null);
     try {
       if (actionGenerationMode === 'image-to-video') {
+        const isLoopAction = actionTemplate.loop;
         const result = await generateCharacterAnimationDraft({
           characterId: assetKey || 'qwen-sprite-tool',
           strategy: 'image-to-video',
@@ -413,20 +414,21 @@ export default function QwenSpriteSheetTool() {
           visualSource: selectedMasterSource,
           referenceImageDataUrls: [],
           referenceVideoDataUrls: [],
+          lastFrameImageDataUrl: isLoopAction ? undefined : selectedMasterSource,
           frameCount: 16,
           fps: actionTemplate.defaultFps,
           durationSeconds: FIXED_IMAGE_TO_VIDEO_DURATION_SECONDS,
           loop: actionTemplate.loop,
           useChromaKey,
-          resolution: FIXED_IMAGE_TO_VIDEO_RESOLUTION,
+          resolution: isLoopAction ? '720P' : FIXED_IMAGE_TO_VIDEO_RESOLUTION,
           imageSequenceModel: 'wan2.7-image-pro',
-          videoModel: FIXED_IMAGE_TO_VIDEO_MODEL,
+          videoModel: isLoopAction ? 'wan2.6-i2v-flash' : FIXED_IMAGE_TO_VIDEO_MODEL,
           referenceVideoModel: 'wan2.7-r2v',
           motionTransferModel: 'wan2.2-animate-move',
         });
 
         if (result.strategy !== 'image-to-video') {
-          throw new Error('图生视频接口返回了非预期结果。');
+          throw new Error('动作生成接口返回了非预期结果。');
         }
 
         const clip = await buildAnimationClipFromVideoSource(
@@ -439,6 +441,8 @@ export default function QwenSpriteSheetTool() {
             frameWidth: GENERATED_FRAME_WIDTH,
             frameHeight: GENERATED_FRAME_HEIGHT,
             applyChromaKey: useChromaKey,
+            sampleStartRatio: actionTemplate.loop ? 0.12 : 0,
+            sampleEndRatio: actionTemplate.loop ? 0.94 : 1,
           },
         );
         const composedSheet = await composeSpriteSheetFromFrames(clip.frames, {