Add Render Cleanup Logic

Util/FFmpeg/FFmpegProcess.cs

@@ -6,7 +6,7 @@ using Unity.Collections;
 
 namespace ADOFAIRenderer.Util.FFmpeg
 {
-    public class FFmpegProcess
+    public class FFmpegProcess : IDisposable
     {
         public static string FFmpegPath = "";
 
@@ -47,9 +47,58 @@ namespace ADOFAIRenderer.Util.FFmpeg
         public void Close()
         {
             if (_ffmpegProcess == null || _ffmpegProcess.HasExited || _inputStream == null) return;
-            _inputStream.Flush();
-            _inputStream.Close();
-            _ffmpegProcess.WaitForExit();
+            try
+            {
+                _inputStream.Flush();
+                _inputStream.Close();
+                
+                // Allow FFmpeg to finish encoding and exit gracefully without any timeout to prevent video corruption
+                _ffmpegProcess.WaitForExit();
+            }
+            catch (Exception)
+            {
+                // Ignore any issues during termination
+            }
+            finally
+            {
+                _ffmpegProcess.Dispose();
+                _ffmpegProcess = null;
+                _inputStream = null;
+            }
+        }
+
+        public void Kill()
+        {
+            try
+            {
+                if (_ffmpegProcess != null && !_ffmpegProcess.HasExited)
+                {
+                    _ffmpegProcess.Kill();
+                }
+            }
+            catch (Exception)
+            {
+                // Ignore process already exited or access denied errors during cleanup
+            }
+            finally
+            {
+                try
+                {
+                    _inputStream?.Close();
+                }
+                catch
+                {
+                    // Ignore
+                }
+                _ffmpegProcess?.Dispose();
+                _ffmpegProcess = null;
+                _inputStream = null;
+            }
+        }
+
+        public void Dispose()
+        {
+            Kill();
         }
 
         public static byte[] RentRawBytes(int size)