diff --git a/domain/task.py b/domain/task.py
index fc06f40..ad04d66 100644
--- a/domain/task.py
+++ b/domain/task.py
@@ -5,12 +5,13 @@
 定义任务类型、任务实体、渲染规格、输出规格等数据结构。
 """
 
-from enum import Enum
-from dataclasses import dataclass, field
-from typing import Dict, Any, Optional, List
-from datetime import datetime
-from urllib.parse import urlparse, unquote
 import os
+from dataclasses import dataclass, field
+from datetime import datetime
+from enum import Enum
+from math import isfinite
+from typing import Dict, Any, Optional, List
+from urllib.parse import urlparse, unquote
 
 
 # 支持的图片扩展名
@@ -95,7 +96,9 @@ class Effect:
     特效配置
 
     格式：type:params
-    例如：cameraShot:3,1 表示在第3秒定格1秒
+    例如：
+    - cameraShot:3,1 表示在第3秒定格1秒
+    - zoom:1.5,1.2,2 表示从第1.5秒开始放大 1.2 倍并持续 2 秒
     """
     effect_type: str           # 效果类型
     params: str = ""           # 参数字符串
@@ -122,7 +125,7 @@ class Effect:
         解析效果字符串
 
         格式：effect1|effect2|effect3
-        例如：cameraShot:3,1|blur:5
+        例如：cameraShot:3,1|zoom:1.5,1.2,2
         """
         if not effects_str:
             return []
@@ -152,6 +155,40 @@ class Effect:
         except ValueError:
             return (3, 1)
 
+    def get_zoom_params(self) -> tuple:
+        """
+        获取 zoom 效果参数
+
+        Returns:
+            (start_sec, scale_factor, duration_sec): 起始时间、放大倍数、持续时长（秒）
+        """
+        if self.effect_type != 'zoom':
+            return (0.0, 1.2, 1.0)
+
+        default_start_sec = 0.0
+        default_scale_factor = 1.2
+        default_duration_sec = 1.0
+
+        if not self.params:
+            return (default_start_sec, default_scale_factor, default_duration_sec)
+
+        parts = [part.strip() for part in self.params.split(',')]
+        try:
+            start_sec = float(parts[0]) if len(parts) >= 1 and parts[0] else default_start_sec
+            scale_factor = float(parts[1]) if len(parts) >= 2 and parts[1] else default_scale_factor
+            duration_sec = float(parts[2]) if len(parts) >= 3 and parts[2] else default_duration_sec
+        except ValueError:
+            return (default_start_sec, default_scale_factor, default_duration_sec)
+
+        if not isfinite(start_sec) or start_sec < 0:
+            start_sec = default_start_sec
+        if not isfinite(scale_factor) or scale_factor <= 1.0:
+            scale_factor = default_scale_factor
+        if not isfinite(duration_sec) or duration_sec <= 0:
+            duration_sec = default_duration_sec
+
+        return (start_sec, scale_factor, duration_sec)
+
 
 @dataclass
 class RenderSpec:
diff --git a/handlers/render_video.py b/handlers/render_video.py
index d3d7749..a188a0a 100644
--- a/handlers/render_video.py
+++ b/handlers/render_video.py
@@ -491,7 +491,10 @@ class RenderSegmentVideoHandler(BaseHandler):
 
         # 解析 effects
         effects = render_spec.get_effects()
-        has_camera_shot = any(e.effect_type == 'cameraShot' for e in effects)
+        has_complex_effect = any(
+            effect.effect_type in {'cameraShot', 'zoom'}
+            for effect in effects
+        )
 
         # 硬件加速时需要先 hwdownload（将 GPU 表面下载到系统内存）
         hwaccel_prefix = self.get_hwaccel_filter_prefix()
@@ -541,9 +544,8 @@ class RenderSegmentVideoHandler(BaseHandler):
         )
         filters.append(scale_filter)
 
-        # 5. 特效处理（cameraShot 需要特殊处理）
-        if has_camera_shot:
-            # cameraShot 需要使用 filter_complex 格式
+        # 5. 特效处理（cameraShot / zoom 需要使用 filter_complex）
+        if has_complex_effect:
             return self._build_filter_complex_with_effects(
                 base_filters=filters,
                 effects=effects,
@@ -624,7 +626,7 @@ class RenderSegmentVideoHandler(BaseHandler):
         """
         构建包含特效的 filter_complex 滤镜图
 
-        cameraShot 效果需要使用 split/freezeframes/concat 滤镜组合。
+        cameraShot / zoom 效果都在此处统一处理并按 effects 顺序叠加。
 
         Args:
             base_filters: 基础滤镜列表
@@ -695,6 +697,31 @@ class RenderSegmentVideoHandler(BaseHandler):
                     f"{frozen_out}{rest_out}concat=n=2:v=1:a=0{effect_output}"
                 )
 
+                current_output = effect_output
+                effect_idx += 1
+            elif effect.effect_type == 'zoom':
+                start_sec, scale_factor, duration_sec = effect.get_zoom_params()
+                if start_sec < 0 or scale_factor <= 1.0 or duration_sec <= 0:
+                    continue
+
+                zoom_end_sec = start_sec + duration_sec
+                base_out = f'[eff{effect_idx}_base]'
+                zoom_source_out = f'[eff{effect_idx}_zoom_src]'
+                zoom_scaled_out = f'[eff{effect_idx}_zoom_scaled]'
+                effect_output = f'[v_eff{effect_idx}]'
+                zoom_enable = f"'between(t,{start_sec},{zoom_end_sec})'"
+
+                filter_parts.append(
+                    f"{current_output}split=2{base_out}{zoom_source_out}"
+                )
+                filter_parts.append(
+                    f"{zoom_source_out}scale=iw*{scale_factor}:ih*{scale_factor},"
+                    f"crop={width}:{height}:(in_w-{width})/2:(in_h-{height})/2{zoom_scaled_out}"
+                )
+                filter_parts.append(
+                    f"{base_out}{zoom_scaled_out}overlay=0:0:enable={zoom_enable}{effect_output}"
+                )
+
                 current_output = effect_output
                 effect_idx += 1