first stable version

modules/ANSCV/ANSRTSP.cpp

@@ -1063,11 +1063,15 @@ extern "C" __declspec(dllexport) int GetRTSPCVImage(
                 RTSP_DBG("[GetRTSPCVImage] cudaHW: %dx%d data[0]=%p data[1]=%p",
                         cudaHW->width, cudaHW->height,
                         (void*)cudaHW->data[0], (void*)cudaHW->data[1]);
-                AVFrame* cpuNV12 = (*Handle)->GetNV12Frame();
 
                 // Acquire a slot from the global pool — survives camera Destroy.
                 GpuNV12Slot* slot = GpuNV12SlotPool::instance().acquire(
                     gpuIdx, cudaHW->width, cudaHW->height);
+
+                // Only fetch CPU NV12 if pool slot unavailable (cross-GPU fallback).
+                // When slot is valid, the D2D copy goes GPU→GPU and CPU NV12 is never used.
+                // Skipping av_frame_clone + av_frame_free saves ~0.1ms per frame.
+                AVFrame* cpuNV12 = slot ? nullptr : (*Handle)->GetNV12Frame();
                 gpu_frame_attach_cuda(*image, cudaHW, gpuIdx, timeStamp, cpuNV12, slot);
             } else {
                 // HW decode not active — try CPU NV12