diff --git a/plugins/input_rtsp/input_rtsp_node.cpp b/plugins/input_rtsp/input_rtsp_node.cpp
index d68df36..455029f 100644
--- a/plugins/input_rtsp/input_rtsp_node.cpp
+++ b/plugins/input_rtsp/input_rtsp_node.cpp
@@ -597,7 +597,10 @@ private:
                 auto try_group = [&](MppBufferType t) -> bool {
                     return mpp_buffer_group_get(&group, t, MPP_BUFFER_INTERNAL, MODULE_TAG, __FUNCTION__) == MPP_OK;
                 };
-                if (!try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DMA_HEAP | MPP_BUFFER_FLAGS_CACHABLE)) &&
+                // Prefer DMA32 buffers to keep physical addresses <4GB; some RGA drivers can't map >4GB.
+                if (!try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DMA_HEAP | MPP_BUFFER_FLAGS_CACHABLE | MPP_BUFFER_FLAGS_DMA32)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DMA_HEAP | MPP_BUFFER_FLAGS_DMA32)) &&
+                    !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DMA_HEAP | MPP_BUFFER_FLAGS_CACHABLE)) &&
                     !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DMA_HEAP)) &&
                     !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DRM | MPP_BUFFER_FLAGS_CACHABLE)) &&
                     !try_group(static_cast<MppBufferType>(MPP_BUFFER_TYPE_DRM)) &&