diff --git a/vav2/Vav2Player/VavCore/VavCore.vcxproj b/vav2/Vav2Player/VavCore/VavCore.vcxproj
index c1d5f5c..3e2650a 100644
--- a/vav2/Vav2Player/VavCore/VavCore.vcxproj
+++ b/vav2/Vav2Player/VavCore/VavCore.vcxproj
@@ -105,8 +105,8 @@
     <ClInclude Include="include\VavCore\VavCore.h" />
     <ClInclude Include="include\VavCore\VideoTypes.h" />
     <ClInclude Include="include\VavCore\IVideoDecoder.h" />
-    <ClInclude Include="include\VavCore\IAdaptiveVideoDecoder.h" />
     <ClInclude Include="src\pch.h" />
+    <ClInclude Include="src\Common\AdaptiveTypes.h" />
     <ClInclude Include="src\Decoder\AV1Decoder.h" />
     <ClInclude Include="src\Decoder\AdaptiveAV1Decoder.h" />
     <ClInclude Include="src\Decoder\AdaptiveNVDECDecoder.h" />
diff --git a/vav2/Vav2Player/VavCore/src/Common/IAdaptiveVideoDecoder.h b/vav2/Vav2Player/VavCore/src/Common/AdaptiveTypes.h
similarity index 58%
rename from vav2/Vav2Player/VavCore/src/Common/IAdaptiveVideoDecoder.h
rename to vav2/Vav2Player/VavCore/src/Common/AdaptiveTypes.h
index 2145e90..7b36cb3 100644
--- a/vav2/Vav2Player/VavCore/src/Common/IAdaptiveVideoDecoder.h
+++ b/vav2/Vav2Player/VavCore/src/Common/AdaptiveTypes.h
@@ -1,10 +1,10 @@
 #pragma once
-#include "../Decoder/IVideoDecoder.h"
 #include <chrono>
+#include <cstdint>
 
 namespace VavCore {
 
-// Forward declarations for adaptive types
+// Quality levels for adaptive adjustment
 enum class QualityLevel {
     ULTRA = 0,      // Original resolution, full quality
     HIGH = 1,       // 75% resolution, high quality
@@ -13,6 +13,7 @@ enum class QualityLevel {
     MINIMUM = 4     // 12.5% resolution, minimal quality
 };
 
+// Adaptive quality modes
 enum class AdaptiveQualityMode {
     CONSERVATIVE = 0,  // Stable quality, avoid frequent changes
     FAST = 1,         // Quick adaptation to performance changes
@@ -21,13 +22,13 @@ enum class AdaptiveQualityMode {
 
 // Performance monitoring data
 struct PerformanceMetrics {
-    double average_decode_time_ms = 0.0;
-    double current_fps = 0.0;
-    uint64_t frames_decoded = 0;
-    uint64_t frames_dropped = 0;
+    double avg_decode_time_ms = 0.0;
     double avg_render_time_ms = 0.0;
     double cpu_usage_percent = 0.0;
     double gpu_usage_percent = 0.0;
+    uint64_t frames_decoded = 0;
+    uint64_t dropped_frames = 0;
+    double current_fps = 0.0;
     std::chrono::steady_clock::time_point last_update;
 };
 
@@ -54,30 +55,4 @@ struct AdaptiveConfig {
     bool enable_skip_non_reference = true;
 };
 
-// Interface for adaptive video decoders with quality control
-class IAdaptiveVideoDecoder : public virtual IVideoDecoder {
-public:
-    virtual ~IAdaptiveVideoDecoder() = default;
-
-    // Adaptive quality control
-    virtual void SetQualityMode(AdaptiveQualityMode mode) = 0;
-    virtual AdaptiveQualityMode GetQualityMode() const = 0;
-    virtual void SetQualityLevel(QualityLevel level) = 0;
-    virtual QualityLevel GetCurrentQualityLevel() const = 0;
-
-    // Performance monitoring
-    virtual PerformanceMetrics GetPerformanceMetrics() const = 0;
-    virtual void UpdatePerformanceMetrics(double decode_time, double render_time = 0.0) = 0;
-
-    // Manual override controls
-    virtual void EnableAdaptiveMode(bool enable) = 0;
-    virtual bool IsAdaptiveModeEnabled() const = 0;
-    virtual void SetTargetFrameRate(double fps) = 0;
-    virtual void ForceQualityAdjustment() = 0; // Immediate adjustment trigger
-
-    // Configuration management
-    virtual void UpdateConfig(const AdaptiveConfig& config) = 0;
-    virtual AdaptiveConfig GetConfig() const = 0;
-};
-
 } // namespace VavCore
\ No newline at end of file
diff --git a/vav2/Vav2Player/VavCore/src/Decoder/AdaptiveAV1Decoder.h b/vav2/Vav2Player/VavCore/src/Decoder/AdaptiveAV1Decoder.h
index 287e81e..44c2875 100644
--- a/vav2/Vav2Player/VavCore/src/Decoder/AdaptiveAV1Decoder.h
+++ b/vav2/Vav2Player/VavCore/src/Decoder/AdaptiveAV1Decoder.h
@@ -1,6 +1,6 @@
 #pragma once
 #include "AV1Decoder.h"
-#include "AdaptiveNVDECDecoder.h" // Include full definitions of shared types
+#include "../Common/AdaptiveTypes.h"
 #include <queue>
 #include <mutex>
 #include <atomic>
diff --git a/vav2/Vav2Player/VavCore/src/Decoder/AdaptiveNVDECDecoder.h b/vav2/Vav2Player/VavCore/src/Decoder/AdaptiveNVDECDecoder.h
index f320f40..aa44535 100644
--- a/vav2/Vav2Player/VavCore/src/Decoder/AdaptiveNVDECDecoder.h
+++ b/vav2/Vav2Player/VavCore/src/Decoder/AdaptiveNVDECDecoder.h
@@ -1,53 +1,12 @@
 #pragma once
 #include "NVDECAV1Decoder.h"
+#include "../Common/AdaptiveTypes.h"
 #include <queue>
 #include <mutex>
 #include <atomic>
 
 namespace VavCore {
 
-// Performance monitoring data
-struct PerformanceMetrics {
-    double avg_decode_time_ms = 0.0;
-    double avg_render_time_ms = 0.0;
-    double cpu_usage_percent = 0.0;
-    double gpu_usage_percent = 0.0;
-    uint64_t dropped_frames = 0;
-    std::chrono::steady_clock::time_point last_update;
-};
-
-// Quality levels for adaptive adjustment
-enum class QualityLevel {
-    ULTRA = 0,      // Original resolution, full quality
-    HIGH = 1,       // 75% resolution, high quality
-    MEDIUM = 2,     // 50% resolution, medium quality
-    LOW = 3,        // 25% resolution, low quality
-    MINIMUM = 4     // 12.5% resolution, minimal quality
-};
-
-// Adaptive decoder configuration
-struct AdaptiveConfig {
-    // Performance thresholds (milliseconds)
-    double target_frame_time_ms = 33.33;  // 30 FPS target
-    double critical_frame_time_ms = 50.0; // 20 FPS critical
-
-    // Quality adjustment thresholds
-    double quality_up_threshold = 0.8;    // Scale up when < 80% of target time
-    double quality_down_threshold = 1.2;  // Scale down when > 120% of target time
-
-    // Hysteresis to prevent oscillation
-    uint32_t stable_frames_required = 30; // Frames to wait before adjustment
-
-    // Memory constraints
-    uint32_t max_decode_surfaces = 16;
-    uint32_t min_decode_surfaces = 4;
-
-    // Enable/disable features
-    bool enable_dynamic_resolution = true;
-    bool enable_dynamic_surfaces = true;
-    bool enable_skip_non_reference = true;
-};
-
 // Enhanced NVDEC decoder with adaptive quality adjustment
 class AdaptiveNVDECDecoder : public NVDECAV1Decoder {
 public:
diff --git a/vav2/Vav2Player/VavCore/src/VavCore.cpp b/vav2/Vav2Player/VavCore/src/VavCore.cpp
index 231e15f..e8813ee 100644
--- a/vav2/Vav2Player/VavCore/src/VavCore.cpp
+++ b/vav2/Vav2Player/VavCore/src/VavCore.cpp
@@ -1,8 +1,8 @@
 #include "pch.h"
 #include "VavCore/VavCore.h"
 #include "Common/VideoTypes.h"  // Internal VavCore types
+#include "Common/AdaptiveTypes.h"  // Adaptive types
 #include "Decoder/IVideoDecoder.h"
-#include "Common/IAdaptiveVideoDecoder.h"
 #include "Decoder/VideoDecoderFactory.h"
 #include "FileIO/WebMFileReader.h"
 
diff --git a/vav2/todo7.txt b/vav2/todo7.txt
index 8abf264..8c51293 100644
--- a/vav2/todo7.txt
+++ b/vav2/todo7.txt
@@ -7,9 +7,6 @@ amd decoder 를 탑재해야해.
 android player 를 만들어서 av1 디코딩 테스트 필요.
 
 
-IAdaptiveVideoDecoder.h 인터페이스가 정말로 필요한 것일까? 재검토를 해봐줘.
-
-
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