diff --git a/src/JT1078.Flv/FlvEncoder.cs b/src/JT1078.Flv/FlvEncoder.cs
index 8b58c3e..783aea1 100644
--- a/src/JT1078.Flv/FlvEncoder.cs
+++ b/src/JT1078.Flv/FlvEncoder.cs
@@ -202,7 +202,7 @@ namespace JT1078.Flv
         public byte[] EncoderVideoTag(JT1078Package package, bool needVideoHeader = false)
         {
             if (package.Label3.DataType == JT1078DataType.音频帧) return default;
-            byte[] buffer = FlvArrayPool.Rent(package.Bodies.Length);
+            byte[] buffer = FlvArrayPool.Rent(package.Bodies.Length*2);
             FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
             var nalus = h264Decoder.ParseNALU(package);
             if (nalus != null && nalus.Count > 0)
@@ -274,7 +274,7 @@ namespace JT1078.Flv
         /// <returns></returns>
         public byte[] EncoderOtherVideoTag(H264NALU nALU)
         {
-            byte[] buffer = FlvArrayPool.Rent(nALU.RawData.Length);
+            byte[] buffer = FlvArrayPool.Rent(nALU.RawData.Length*2);
             try
             {
                 FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
diff --git a/src/JT1078.Flv/JT1078.Flv.csproj b/src/JT1078.Flv/JT1078.Flv.csproj
index 87b6326..71ff164 100644
--- a/src/JT1078.Flv/JT1078.Flv.csproj
+++ b/src/JT1078.Flv/JT1078.Flv.csproj
@@ -14,7 +14,7 @@
     <licenseUrl>https://github.com/SmallChi/JT1078/blob/master/LICENSE</licenseUrl>
     <license>https://github.com/SmallChi/JT1078/blob/master/LICENSE</license>
     <GeneratePackageOnBuild>false</GeneratePackageOnBuild>
-    <Version>1.0.0-preview8</Version>
+    <Version>1.0.0-preview9</Version>
     <SignAssembly>false</SignAssembly>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>