Disable NV12 path for ANSCV by default. Currenly use cv::Mat** directly

MediaClient/media/video_player.h

@@ -15,6 +15,7 @@
 #include <opencv2/highgui.hpp>
 #include <opencv2/opencv.hpp>
 #include <turbojpeg.h>
+#include <chrono>
 
 typedef struct
 {
@@ -146,6 +147,7 @@ public:
     }
     // Image quality mode: 0=fast (OpenCV BT.601, ~2ms), 1=quality (sws BT.709+range, ~12ms)
     virtual void    setImageQuality(int mode) { m_nImageQuality = mode; }
+    void            setTargetFPS(double intervalMs);  // Set minimum interval between processed frames in ms (0 = no limit, 100 = ~10 FPS)
     virtual void    setRtpMulticast(BOOL flag) {}
     virtual void    setRtpOverUdp(BOOL flag) {}
 
@@ -266,6 +268,11 @@ protected:
     int             m_cleanFrameCount = 0;         // Count of clean frames after keyframe
     static const int SETTLE_FRAME_COUNT = 5;       // Number of clean frames before delivering new frames
 
+    // Frame rate limiting — skip post-decode processing for frames beyond target interval
+    double m_targetIntervalMs = 100.0;                     // default 100ms (~10 FPS), 0 = no limit (process all frames)
+    std::chrono::steady_clock::time_point m_lastProcessedTime;  // timestamp of last processed frame
+    bool m_targetFPSInitialized = false;                   // first-frame flag
+
     BOOL            m_bPlaying;
     BOOL            m_bPaused;