diff --git a/infra/docker/worker.Dockerfile b/infra/docker/worker.Dockerfile
index 9b0c0ca5c..0639128cb 100755
--- a/infra/docker/worker.Dockerfile
+++ b/infra/docker/worker.Dockerfile
@@ -2,10 +2,9 @@
 # Worker Dockerfile - 优化版（多阶段构建 + 镜像瘦身 + cache mount加速）
 # 优化项：
 #   1. 多阶段构建：builder 阶段安装编译依赖，runtime 阶段只保留运行时
-#   2. ffmpeg 静态编译替换：从 apt 安装(457MB) 改为静态二进制(~80MB)
+#   2. ffmpeg 通过 apt 安装（阿里云镜像加速，几秒完成，稳定可靠）
 #   3. Python 依赖瘦身：strip .so 调试符号 + 清理测试文件 + 清理缓存
 #   4. pip cache mount：加速依赖下载（跨构建共享pip wheel缓存）
-#   5. ffmpeg cache mount：避免每次重新下载静态编译包
 # ============================================================
 
 # ==================== Builder 阶段 ====================
@@ -21,48 +20,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     g++ \
     python3-dev \
     binutils \
-    wget \
-    xz-utils \
     && rm -rf /var/lib/apt/lists/*
 
-# ---- 下载静态编译 ffmpeg（带缓存+完整性校验+多源重试）----
-# 注意：必须用纯sh语法（dash兼容），不能用bash数组、[[ ]]等特性
-# 修复策略：1.三源下载 2.tar完整性校验 3.损坏删缓存重试 4.二进制可执行校验
-RUN --mount=type=cache,target=/tmp/ffmpeg-cache,sharing=locked \
-    cd /tmp \
-    && FFMPEG_FILE="/tmp/ffmpeg-cache/ffmpeg-release-amd64-static.tar.xz" \
-    && download_ok=0 \
-    && for src in \
-         "https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz" \
-         "https://mirrors.tuna.tsinghua.edu.cn/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz" \
-         "https://mirrors.ustc.edu.cn/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz"; \
-       do \
-         if [ $download_ok -eq 0 ] && [ -f "$FFMPEG_FILE" ] && tar -tf "$FFMPEG_FILE" >/dev/null 2>&1; then \
-           echo "[ffmpeg] cache valid, skip download"; \
-           download_ok=1; \
-           break; \
-         fi; \
-         rm -f "$FFMPEG_FILE"; \
-         echo "[ffmpeg] downloading from $src"; \
-         if wget -q --tries=3 --timeout=30 -O "$FFMPEG_FILE" "$src"; then \
-           if tar -tf "$FFMPEG_FILE" >/dev/null 2>&1; then \
-             echo "[ffmpeg] download OK, tar valid"; \
-             download_ok=1; \
-             break; \
-           else \
-             echo "[ffmpeg] corrupted file, removing cache"; \
-             rm -f "$FFMPEG_FILE"; \
-           fi; \
-         fi; \
-       done \
-    && if [ $download_ok -eq 0 ]; then echo "[ffmpeg] ALL SOURCES FAILED"; exit 1; fi \
-    && tar xf "$FFMPEG_FILE" \
-    && cp ffmpeg-*-amd64-static/ffmpeg /usr/local/bin/ffmpeg \
-    && cp ffmpeg-*-amd64-static/ffprobe /usr/local/bin/ffprobe \
-    && chmod +x /usr/local/bin/ffmpeg /usr/local/bin/ffprobe \
-    && ffmpeg -version >/dev/null 2>&1 && ffprobe -version >/dev/null 2>&1 \
-    && echo "[ffmpeg] binary valid" \
-    && rm -rf ffmpeg-*
 
 # ---- 安装 Python 依赖 ----
 WORKDIR /tmp
@@ -120,13 +79,10 @@ RUN sed -i 's|deb.debian.org|mirrors.aliyun.com|g' /etc/apt/sources.list.d/debia
 
 # 安装最小运行时依赖（opencv-python-headless 需要 libglib2.0-0）
 RUN apt-get update && apt-get install -y --no-install-recommends \
+    ffmpeg \
     libglib2.0-0 \
     && rm -rf /var/lib/apt/lists/*
 
-# 从 builder 复制 ffmpeg 静态二进制
-COPY --from=builder /usr/local/bin/ffmpeg /usr/local/bin/ffmpeg
-COPY --from=builder /usr/local/bin/ffprobe /usr/local/bin/ffprobe
-
 # 从 builder 复制 Python 虚拟环境
 COPY --from=builder /opt/venv /opt/venv