diff --git a/Demo/FFmpegApi-Demo/demo1.lua b/Demo/FFmpegApi-Demo/demo1.lua
index 50a2656..4a475f9 100644
--- a/Demo/FFmpegApi-Demo/demo1.lua
+++ b/Demo/FFmpegApi-Demo/demo1.lua
@@ -4,60 +4,40 @@ local API_URL = "http://ffmpeg.liulikeji.cn/api/ffmpeg"
 -- 输入音频URL (可替换) / Input audio URL (replaceable)
 local INPUT_URL = "https://git.liulikeji.cn/xingluo/CCTweaked-Demo/raw/branch/main/Demo/FFmpegApi-Demo/demo.mp3"
 
--- 主函数 / Main function
-local function convertAndPlay()
-    -- ===== 1. 准备请求数据 / Prepare request data =====
+
+local function Get_dfpwm_url(INPUT_URL,API_URL)
+    -- ===== 1. 发送HTTP请求 / Send HTTP request =====
     local requestData = {
         input_url = INPUT_URL,
         args = { "-vn", "-ar", "48000", "-ac", "1" }, -- DFPWM转换参数 / DFPWM conversion args
         output_format = "dfpwm"
     }
 
-    -- ===== 2. 发送HTTP请求 / Send HTTP request =====
     local response, err = http.post(
         API_URL,
         textutils.serializeJSON(requestData),
         { ["Content-Type"] = "application/json" }
     )
 
-    -- ===== 3. 错误处理 / Error handling =====
-    -- 网络错误 / Network error
-    if not response then
-        printError("\nHTTP request failed: " .. (err or "unknown error"))
-        return
+    -- ===== 2. 读取数据 / Send HTTP request =====
+    if not response then error("HTTP Request Failure: "..(err or "Unknown error")) 
+    else
+        -- 读取响应 / Read response
+        local responseData = textutils.unserializeJSON(res.readAll())
+        response.close()
+        
+        --返回下载链接 / Return download URL
+        if responseData.status ~= "success" then error("Conversion failed:"..(responseData.error or "Unknown error")) 
+        else
+            return responseData.download_url
+        end
     end
-
-    -- 读取响应 / Read response
-    local responseBody = response.readAll()
-  
-
-    -- HTTP状态码检查 / HTTP status check
-    local statusCode = response.getResponseCode()
-    if statusCode ~= 200 then
-        printError("\nAPI error (status "..statusCode..")")
-        return
-    end
-
-    -- ===== 4. 解析JSON / Parse JSON =====
-    local responseData = textutils.unserializeJSON(responseBody)
-    if not responseData then
-        printError("\nInvalid API response (bad JSON)")
-        return
-    end
-
-    -- API业务错误 / API logic error
-    if responseData.status ~= "success" then
-        printError("\nConversion failed: "..(responseData.error or "no error info"))
-        return
-    end
-    response.close()
-
-    -- ===== 5. 播放音频 / Play audio =====
-    print("\nConversion successful! Download URL:")
-    print(responseData.download_url)
-    print("\nPlaying...")
-    shell.run("speaker play "..responseData.download_url)
 end
 
--- 执行 / Execute
-convertAndPlay()
\ No newline at end of file
+
+local download_url = Get_dfpwm_url(INPUT_URL,API_URL)
+-- ===== 播放音频 / Play audio =====
+print("\nConversion successful! Download URL:")
+print(download_url)
+print("\nPlaying...")
+shell.run("speaker play "..download_url)