diff --git a/apps/api/app/api/routes/viral_video.py b/apps/api/app/api/routes/viral_video.py
index e6c16053f..2353f3740 100644
--- a/apps/api/app/api/routes/viral_video.py
+++ b/apps/api/app/api/routes/viral_video.py
@@ -104,6 +104,9 @@ def _to_response(job) -> ViralVideoJobResponse:
         storyboard=getattr(job, "storyboard", None),
         generated_copy_text=getattr(job, "generated_copy_text", "") or "",
         copy_result=_build_copy_result(job),
+        voice_id=getattr(job, "voice_id", "") or "",
+        voice_source=getattr(job, "voice_source", "") or "",
+        video_ratio=getattr(job, "video_ratio", "9:16") or "9:16",
         intent_result=job.intent_result,
         result_video_url=job.result_video_url,
         credits_cost=job.credits_cost,
@@ -192,6 +195,9 @@ def analyze_images(
         reference_video_url=request.reference_video_url or "",
         style_template_id=request.style_template_id or "",
         style_strength=request.style_strength or "medium",
+        voice_id=request.voice_id or "",
+        voice_source=request.voice_source or "",
+        video_ratio=request.video_ratio or "9:16",
     )
     repo.save(job)
 
@@ -247,6 +253,11 @@ def generate_copy(
     job.reference_video_url = request.reference_video_url or job.reference_video_url
     job.style_strength = request.style_strength or job.style_strength
     job.style_template_id = request.style_template_id or job.style_template_id
+    if request.style_guide is not None:
+        job.style_guide = request.style_guide
+    job.voice_id = request.voice_id or job.voice_id
+    job.voice_source = request.voice_source or job.voice_source
+    job.video_ratio = request.video_ratio or job.video_ratio or "9:16"
 
     job.resume_from_image_analyzed()
     repo.update(job)
diff --git a/apps/api/app/schemas/viral_video.py b/apps/api/app/schemas/viral_video.py
index 2789796f6..baf26eef8 100755
--- a/apps/api/app/schemas/viral_video.py
+++ b/apps/api/app/schemas/viral_video.py
@@ -64,12 +64,16 @@ class CreateViralVideoRequest(BaseModel):
 
 
 class AnalyzeImagesRequest(BaseModel):
-    """v1.5 阶段1：创建任务并仅做图片/视频分析。images 必填，其他参数可选（阶段2再传）。"""
+    """v1.5 阶段1：创建任务并仅做图片/视频分析。images 必填，其他参数可选（阶段2再传/覆盖）。"""
 
     images: list[str] = Field(..., min_length=1, max_length=20)
     reference_video_url: str = Field(default="", description="参考爆款视频 URL（可选，有则同步做风格分析）")
     style_template_id: str = Field(default="", description="风格模板 ID（可选）")
     style_strength: str = Field(default="medium")
+    # v1.5.1 音色/视频参数（STEP1 已选定的音色可先传，阶段2可覆盖）
+    voice_id: str = Field(default="", description="TTS 音色 ID；空则用 persona_id 兜底")
+    voice_source: str = Field(default="", description="音色来源：preset/library/clone/upload")
+    video_ratio: str = Field(default="9:16", description="Seedance 视频比例：9:16/16:9/1:1 等")
 
 
 class GenerateCopyRequest(BaseModel):
@@ -77,7 +81,7 @@ class GenerateCopyRequest(BaseModel):
 
     industry: str = Field(default="")
     target_customer: str = Field(default="")
-    persona_id: str = Field(default="")
+    persona_id: str = Field(default="", description="人设 ID；voice_id 为空时也作为音色 ID 兜底")
     viral_structure: str = Field(default="")
     marketing_purpose: str = Field(default="")
     bgm_preference: str = Field(default="")
@@ -88,6 +92,11 @@ class GenerateCopyRequest(BaseModel):
     reference_video_url: str = Field(default="")
     style_strength: str = Field(default="medium")
     style_template_id: str = Field(default="")
+    style_guide: dict | None = Field(default=None)
+    # v1.5.1 音色/视频参数
+    voice_id: str = Field(default="", description="TTS 音色 ID（优先级高于 persona_id）")
+    voice_source: str = Field(default="", description="音色来源：preset/library/clone/upload")
+    video_ratio: str = Field(default="9:16", description="Seedance 视频比例")
 
     @field_validator("fusion_level")
     @classmethod
@@ -157,6 +166,10 @@ class ViralVideoJobResponse(BaseModel):
     generated_copy_text: str = ""
     # v1.5 前端 CopyResult 结构（final_copy/suggested_copy/title/scenes）
     copy_result: dict | None = None
+    # v1.5.1 音色/视频参数
+    voice_id: str = ""
+    voice_source: str = ""
+    video_ratio: str = "9:16"
     intent_result: dict | None = None
     result_video_url: str = ""
     credits_cost: int = 0
diff --git a/apps/web/src/api/viral-video/types.ts b/apps/web/src/api/viral-video/types.ts
index 0fd27db7b..137f66d48 100644
--- a/apps/web/src/api/viral-video/types.ts
+++ b/apps/web/src/api/viral-video/types.ts
@@ -133,6 +133,12 @@ export interface ViralVideoJob {
   intent_text?: string
   copy_result?: CopyResult
   image_analysis?: ImageAnalysisResult
+  /** TTS 音色 ID */
+  voice_id?: string
+  /** 音色来源 */
+  voice_source?: string
+  /** 视频比例 */
+  video_ratio?: string
   progress_stage?: ViralVideoStage
   progress_percent?: number
   progress_message?: string
@@ -182,6 +188,12 @@ export interface AnalyzeImagesRequest {
   reference_video_url?: string
   style_template_id?: string
   style_strength?: StyleStrength
+  /** TTS 音色 ID（STEP1 已选音色时传；阶段2 generate-copy 可覆盖） */
+  voice_id?: string
+  /** 音色来源：preset | library | clone | upload */
+  voice_source?: "preset" | "library" | "clone" | "upload"
+  /** Seedance 视频比例：9:16 | 16:9 | 1:1 等 */
+  video_ratio?: string
 }
 
 /** v1.5 阶段2请求：填完营销参数后生成文案+分镜（POST /viral-video/{id}/generate-copy） */
@@ -200,6 +212,12 @@ export interface GenerateCopyRequest {
   style_strength?: StyleStrength
   style_template_id?: string
   style_guide?: string | Record<string, unknown>
+  /** TTS 音色 ID（优先级高于 persona_id） */
+  voice_id?: string
+  /** 音色来源：preset | library | clone | upload */
+  voice_source?: "preset" | "library" | "clone" | "upload"
+  /** Seedance 视频比例（9:16/16:9/1:1 等） */
+  video_ratio?: string
 }
 
 /** v1.5 阶段3请求：用户确认/编辑文案后开始渲染（POST /viral-video/{id}/confirm-copy） */
diff --git a/apps/worker/worker_app/tasks/viral_video.py b/apps/worker/worker_app/tasks/viral_video.py
index 20cea372a..f49cd24a3 100644
--- a/apps/worker/worker_app/tasks/viral_video.py
+++ b/apps/worker/worker_app/tasks/viral_video.py
@@ -484,9 +484,9 @@ def _step_tts(job: ViralVideoJob, copy_text: str):
         from apps.worker.services.tts_service_factory import get_tts_service
 
         tts_service = get_tts_service()
-        # Bug #2110: persona_id 透传给 voice_id（空则用 CosyVoice 默认 longxiaochun_v3），
-        # 统一输出 mp3 给后续 ffmpeg 混音（之前默认 wav 导致部分 provider/后处理不兼容）。
-        voice_id = (job.persona_id or "").strip()
+        # v1.5.1: 优先使用 voice_id；voice_id 为空时回退 persona_id（旧字段兼容）；
+        # 再空则用 CosyVoice 默认 longxiaochun_v3。统一输出 mp3 给后续 ffmpeg 混音。
+        voice_id = (getattr(job, "voice_id", "") or job.persona_id or "").strip()
         try:
             result = tts_service.synthesize(
                 text=copy_text,
@@ -585,7 +585,7 @@ def _step_render(job, storyboard, tts_path, bgm):
             prompt=prompt,
             image_url=first_image if i == 0 else None,
             duration=dur,
-            ratio="9:16",
+            ratio=(getattr(job, "video_ratio", None) or "9:16"),
             resolution="720p",
             output_dir=str(tmpdir),
         )
diff --git a/packages/adapters/sqlalchemy_impl/models.py b/packages/adapters/sqlalchemy_impl/models.py
index 06d423720..2e00d0da1 100755
--- a/packages/adapters/sqlalchemy_impl/models.py
+++ b/packages/adapters/sqlalchemy_impl/models.py
@@ -943,6 +943,10 @@ class ViralVideoJobModel(Base):
     style_strength = Column(String(20), nullable=False, default="medium")
     style_guide = Column(JSON, nullable=True)
     style_template_id = Column(String(36), nullable=False, default="", index=True)
+    # v1.5 音频/视频参数
+    voice_id = Column(String(200), nullable=False, default="")
+    voice_source = Column(String(20), nullable=False, default="")
+    video_ratio = Column(String(10), nullable=False, default="9:16")
     # 结果与状态
     status = Column(String(30), nullable=False, default="pending", index=True)
     intent_result = Column(JSON, nullable=True)
diff --git a/packages/adapters/sqlalchemy_impl/session.py b/packages/adapters/sqlalchemy_impl/session.py
index 77642159f..b5020332b 100644
--- a/packages/adapters/sqlalchemy_impl/session.py
+++ b/packages/adapters/sqlalchemy_impl/session.py
@@ -84,6 +84,9 @@ def ensure_database_exists(database_url: str) -> None:
 _VIRAL_VIDEO_BACKFILL_COLS = [
     ("storyboard", "JSON"),
     ("generated_copy_text", "TEXT NOT NULL DEFAULT ''"),
+    ("voice_id", "VARCHAR(200) NOT NULL DEFAULT ''"),
+    ("voice_source", "VARCHAR(20) NOT NULL DEFAULT ''"),
+    ("video_ratio", "VARCHAR(10) NOT NULL DEFAULT '9:16'"),
 ]
 
 
diff --git a/packages/adapters/sqlalchemy_impl/viral_video_repository.py b/packages/adapters/sqlalchemy_impl/viral_video_repository.py
index 0e0ba53b8..50013696b 100755
--- a/packages/adapters/sqlalchemy_impl/viral_video_repository.py
+++ b/packages/adapters/sqlalchemy_impl/viral_video_repository.py
@@ -32,6 +32,9 @@ def _to_domain(model: ViralVideoJobModel) -> ViralVideoJob:
         style_strength=getattr(model, "style_strength", "medium") or "medium",
         style_guide=dict(model.style_guide) if model.style_guide else None,
         style_template_id=getattr(model, "style_template_id", "") or "",
+        voice_id=getattr(model, "voice_id", "") or "",
+        voice_source=getattr(model, "voice_source", "") or "",
+        video_ratio=getattr(model, "video_ratio", "9:16") or "9:16",
         status=ViralVideoStatus(model.status) if model.status else ViralVideoStatus.PENDING,
         intent_result=dict(model.intent_result) if model.intent_result else None,
         image_analysis=dict(model.image_analysis) if getattr(model, "image_analysis", None) else None,
@@ -73,6 +76,9 @@ class SQLAlchemyViralVideoJobRepository:
             style_strength=job.style_strength,
             style_guide=job.style_guide,
             style_template_id=job.style_template_id,
+            voice_id=job.voice_id,
+            voice_source=job.voice_source,
+            video_ratio=job.video_ratio,
             status=job.status,
             intent_result=job.intent_result,
             image_analysis=job.image_analysis,
@@ -121,6 +127,9 @@ class SQLAlchemyViralVideoJobRepository:
         model.reference_video_url = job.reference_video_url
         model.style_strength = job.style_strength
         model.style_template_id = job.style_template_id
+        model.voice_id = job.voice_id or ""
+        model.voice_source = job.voice_source or ""
+        model.video_ratio = job.video_ratio or "9:16"
         model.updated_at = datetime.now(timezone.utc)
         self.session.commit()
 
diff --git a/packages/domain/viral_video.py b/packages/domain/viral_video.py
index 3ce7ed09a..ca008c866 100755
--- a/packages/domain/viral_video.py
+++ b/packages/domain/viral_video.py
@@ -120,6 +120,10 @@ class ViralVideoJob:
     style_strength: str = StyleStrength.MEDIUM
     style_guide: dict | None = None
     style_template_id: str = ""
+    # v1.5 音频/视频参数
+    voice_id: str = ""  # TTS 音色 ID（CosyVoice voice_id）；为空则用 persona_id 兜底
+    voice_source: str = ""  # preset/library/clone/upload
+    video_ratio: str = "9:16"  # Seedance 视频比例：9:16 / 16:9 / 1:1 / etc.
     # v1.4 图片分析结果（run_pipeline 持久化，resume 时读取给文案/分镜）
     image_analysis: dict | None = None
     # v1.5 三步分步流水线产物（持久化，供前端 GET 读取 + resume 消费）
diff --git a/tests/unit/test_viral_video_routes.py b/tests/unit/test_viral_video_routes.py
index eaf231f2d..c1eff5295 100644
--- a/tests/unit/test_viral_video_routes.py
+++ b/tests/unit/test_viral_video_routes.py
@@ -54,6 +54,9 @@ def _make_job(job_id: str = "job-1", user_id: str = "u1", status: str = "pending
         "image_analysis": None,
         "storyboard": None,
         "generated_copy_text": "",
+        "voice_id": "",
+        "voice_source": "",
+        "video_ratio": "9:16",
         "credits_cost": 0,
         "updated_at": None,
     }.items():
@@ -277,6 +280,71 @@ class TestGenerateCopy:
                 vv_mod.generate_copy("job-gc2", GenerateCopyRequest(), authenticated_user=user, session=session)
             assert exc.value.status_code == 409
 
+    def test_generate_copy_persists_voice_and_ratio(self):
+        """generate-copy 应把 voice_id/voice_source/video_ratio 写入 job。"""
+        from unittest.mock import patch
+
+        from app.api.routes import viral_video as vv_mod
+        from app.schemas.viral_video import GenerateCopyRequest
+
+        from packages.domain.viral_video import ViralVideoStatus
+
+        user = _auth_user("u1")
+        session = MagicMock()
+        job = _make_job(job_id="job-gc3", user_id="u1", status=ViralVideoStatus.IMAGE_ANALYZED)
+        repo = MagicMock()
+        repo.get.return_value = job
+        req = GenerateCopyRequest(
+            voice_id="cosy_voice_001",
+            voice_source="library",
+            video_ratio="16:9",
+        )
+        with (
+            patch.object(vv_mod, "_get_job_repo", return_value=repo),
+            patch.object(vv_mod.celery_app, "send_task"),
+        ):
+            vv_mod.generate_copy("job-gc3", req, authenticated_user=user, session=session)
+        assert job.voice_id == "cosy_voice_001"
+        assert job.voice_source == "library"
+        assert job.video_ratio == "16:9"
+
+
+class TestAnalyzeImagesPersist:
+    def test_analyze_images_persists_voice_and_ratio(self):
+        """analyze-images 创建任务时应带上 voice/video_ratio 字段。"""
+        from unittest.mock import patch
+
+        from app.api.routes import viral_video as vv_mod
+        from app.schemas.viral_video import AnalyzeImagesRequest
+
+        user = _auth_user("u1")
+        session = MagicMock()
+        saved = {}
+
+        class FakeRepo:
+            def save(self, job):
+                saved["job"] = job
+
+            def get(self, jid):
+                return None
+
+        req = AnalyzeImagesRequest(
+            images=["img-1"],
+            voice_id="preset_v1",
+            voice_source="preset",
+            video_ratio="1:1",
+        )
+        with (
+            patch.object(vv_mod, "_get_job_repo", return_value=FakeRepo()),
+            patch.object(vv_mod.celery_app, "send_task"),
+        ):
+            resp = vv_mod.analyze_images(req, authenticated_user=user, session=session)
+        job = saved["job"]
+        assert job.voice_id == "preset_v1"
+        assert job.voice_source == "preset"
+        assert job.video_ratio == "1:1"
+        assert resp.images == ["img-1"]
+
 
 class TestConfirmCopy:
     def test_confirm_copy_dispatches_render(self):