diff --git a/play.lua b/play.lua
index d5636a0..84b4a09 100644
--- a/play.lua
+++ b/play.lua
@@ -1,11 +1,72 @@
 -- 简化版视频播放器
 local gpu = peripheral.wrap("tm_gpu_0")
-local gpu_Size = 64
+local gpu_Size_Auto = true --自动分辨率设置
+local gpu_Size = 64 --默认屏幕分辨率
 
 if not gpu then gpu = peripheral.find("tm_gpu") end
 gpu.refreshSize()
 gpu.setSize(gpu_Size)
-local w, h = gpu.getSize()
+local w, h, w_black, h_black, Size = gpu.getSize()
+
+
+-- 分批下载（每批 10 帧）
+local BATCH_SIZE = 10
+
+
+local function computeOptimalSize(w_black, h_black)
+    local w_target, h_target = 640, 360
+    local max_size = 64
+
+    -- 避免除零
+    if w_black <= 0 or h_black <= 0 then
+        return 1
+    end
+
+    -- 计算理想缩放比例（不能让任一边超过目标）
+    local size_by_w = w_target / w_black
+    local size_by_h = h_target / h_black
+    local ideal_size = math.min(size_by_w, size_by_h)
+
+    -- 如果理想值 >= 64，直接用 64
+    if ideal_size >= max_size then
+        return max_size
+    end
+
+    -- 否则，在 floor 和 ceil 中选更优的（但不能超过 64）
+    local size_floor = math.floor(ideal_size)
+    local size_ceil = math.ceil(ideal_size)
+
+    -- 确保不越界
+    if size_floor < 1 then size_floor = 1 end
+    if size_ceil > max_size then size_ceil = max_size end
+
+    -- 计算两个候选的误差（欧氏距离或曼哈顿距离均可，这里用平方和）
+    local function error(size)
+        local w = w_black * size
+        local h = h_black * size
+        return (w - w_target)^2 + (h - h_target)^2
+    end
+
+    local err_floor = error(size_floor)
+    local err_ceil = error(size_ceil)
+
+    if err_floor <= err_ceil then
+        return size_floor
+    else
+        return size_ceil
+    end
+end
+
+if gpu_Size_Auto then
+    local optimal_Size = computeOptimalSize(w_black, h_black)
+    print("[I] gpu_Size: "..optimal_Size)
+    gpu.refreshSize()
+    gpu.setSize(optimal_Size)
+end
+local w, h, w_black, h_black, Size = gpu.getSize()
+
+
+
 local mypath = "/"..fs.getDir(shell.getRunningProgram())
 if not fs.exists(mypath.."/speakerlib.lua") then shell.run("wget https://git.liulikeji.cn/xingluo/computer_craft_video_play/raw/branch/main/speakerlib.lua") end
 
@@ -188,8 +249,6 @@ local function unpackFramePack(data)
     return frames
 end
 
--- 分批下载（每批 50 帧）
-local BATCH_SIZE = 20
 -- local totalFrames = #videoInfo.frame_urls
 local totalFrames = videoInfo.fps * 20  -- 仅下载前20秒以节省时间
 local allFrameData = {}
@@ -219,7 +278,7 @@ for _, batch in ipairs(initBatches) do
                 url = server_url .. "/api/framepack?" .. batch.urls[1],
                 headers = { ["Content-Type"] = "application/json" },
                 body = textutils.serializeJSON({ urls = batch.urls }),
-                timeout = 3,
+                timeout = 2,
                 binary = true
             })
 
@@ -265,7 +324,7 @@ until _G.audio_ready
 local starttime1 = os.clock()
 
 
--- 播放前已缓存 20 秒
+
 local totalFramesToPlay = #videoInfo.frame_urls
 
 -- 标志：是否还在播放
@@ -319,7 +378,7 @@ local function cacheAhead()
                 url = url,
                 headers = { ["Content-Type"] = "application/json" },
                 body = body,
-                timeout = 3,
+                timeout = 2,
                 binary = true
             })
             pendingRequests[url] = batch
@@ -455,7 +514,7 @@ local function renderVideo()
                         math.floor(ui_avgMs),
                         math.floor(ui_lowFps), 
                         math.floor(ui_lowMs),
-                        w,h,gpu_Size
+                        w,h,Size
                     )
                     gpu.drawText(1, 1, statusText, 0xFD452A)
                 end
@@ -484,11 +543,7 @@ local function renderVideo()
             if nil_e >= 200 then
                 error("\n[E] No available video data for 10 seconds \nDownload speed is below the minimum threshold! \nPlease try checking your network bandwidth or adjusting the resolution.")
             end
-            repeat
-                local event, id = os.pullEvent("timer")
-            until id == timer_id
-
-    
+            sleep(2)
             timer_id = os.startTimer(frameDelay)
             -- === 修改点：数据为空时，不做任何操作，直接进入下方的同步逻辑 ===
             -- 此时 frameEnd 依然等于 frameStart，计算出的 costTime 为 0