diff --git a/play.lua b/play.lua
index d4d2bfa..80e3d19 100644
--- a/play.lua
+++ b/play.lua
@@ -409,7 +409,7 @@ local function renderVideo()
         local frameStart = frameEnd
 
         -- 1. 内存清理
-        for i = 1, math.max(0, frameIndex - 5) do
+        for i = 1, math.max(0, frameIndex - 10) do
             allFrameData[i] = nil
         end