增加sample简单用例

codecbenchmark-py/video_cuda_decode_benchmark.csv

 Decode,Bit Depth,Resolution,Fps/(BMZ 1 Core),Fps/(BMZ 6 Processes)
-H264,8,1920x1080,506.87,2277.36
+H264,8,1920x1080,499.38,2056.14

codecbenchmark-py/video_cuda_encode_benchmark.csv

 Encode,Bit Depth,Resolution,Fps/(BMZ 1 Core)
-H264,8,1920x1080,251.78
+H264,8,1920x1080,230.31

sample/readme.md

+# FFmpeg DCU python测试用例
+
+这是一个简单的 DCU视频编解码Python demo用例。
+
+## 环境要求
+
+- **驱动**: 与MacCodecSDK版本一致
+
+### 软件
+- **FFmpeg**: 
+  - `MacCodecSDK`
+- **Python 依赖**:
+  - `ffmpeg-python`
+- **docker环境**:
+  - `基于DTK2504镜像即可，本sample使用harbor.sourcefind.cn:5443/dcu/admin/base/vllm:0.9.2-ubuntu22.04-dtk26.04-0130-py3.10-20260202`
+
+## 安装步骤
+
+### 1. 安装系统级 MacCodecSDK
+确保 FFmpeg 已安装，可通过ffmpeg指令验证
+
+### 2. 安装 Python 依赖
+
+```bash
+pip install ffmpeg-python
+```
+
+## 使用方法
+运行脚本：
+```bash
+python benchmark_cuda.py
+```
+
+## 输出示例
+
+### 成功情况
+```text
+--- Starting CUDA Benchmark for ./sample_1920x1080_30fps_8bit.h264 ---
+
+[1] Testing CUDA Decode...
+    Decode Success
+
+[2] Testing CUDA Encode (H264 NVENC)...
+    Encode Success
+
+--- Benchmark Finished ---
+```
\ No newline at end of file

sample/test.py

+#!/usr/bin/env python3
+import ffmpeg
+import subprocess
+import sys
+import os
+import re
+
+def run_ffmpeg_command(cmd):
+    """运行命令并返回 stderr 日志"""
+    try:
+        result = subprocess.run(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE, text=True)
+        return result.stderr
+    except Exception as e:
+        return f"Error: {e}"
+
+def main():
+    input_file = "./sample_1920x1080_30fps_8bit.h264"
+    if not os.path.exists(input_file):
+        print(f"Error: File {input_file} not found")
+        sys.exit(1)
+
+    print(f"--- Starting CUDA Benchmark for {input_file} ---\n")
+
+    # 1. CUDA 解码测试 (hwaccel cuda)
+    print("[1] Testing CUDA Decode...")
+    try:
+        stream = ffmpeg.input(input_file, hwaccel='cuda')
+        cmd = ffmpeg.output(stream, 'pipe:', format='null').global_args('-benchmark', '-y').compile()
+        log_content = run_ffmpeg_command(cmd)
+        print(f"    Decode Success\n")
+    except Exception as e:
+        print(f"    Decode Failed: {e}\n")
+
+    # 2. CUDA 编码测试 (h264_nvenc)
+    print("[2] Testing CUDA Encode (H264 NVENC)...")
+    output_file = "output_cuda_temp.mp4"
+    try:
+        stream = ffmpeg.input(input_file)
+        cmd = ffmpeg.output(stream, output_file, vcodec='h264_nvenc').global_args('-benchmark', '-y').compile()
+        log_content = run_ffmpeg_command(cmd)
+        print(f"    Encode Success\n")
+    except Exception as e:
+        print(f"    Encode Failed: {e}\n")
+    finally:
+        # 清理临时文件
+        if os.path.exists(output_file):
+            os.remove(output_file)
+
+    print("--- Benchmark Finished ---")
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file