diff --git a/electron/ipc/export/nativeStaticLayoutRoutePlan.test.ts b/electron/ipc/export/nativeStaticLayoutRoutePlan.test.ts
new file mode 100644
index 000000000..36bcaf064
--- /dev/null
+++ b/electron/ipc/export/nativeStaticLayoutRoutePlan.test.ts
@@ -0,0 +1,167 @@
+import { describe, expect, it } from "vitest";
+import {
+	type NativeStaticLayoutRouteSource,
+	type NvidiaCudaExportCapabilityProbe,
+	planNativeStaticLayoutRoutes,
+	type WindowsD3D11ExportCapabilityProbe,
+} from "./nativeStaticLayoutRoutePlan";
+
+const source: NativeStaticLayoutRouteSource = {
+	inputCodec: "h264",
+	proxyCodec: "h264",
+	proxyCreated: false,
+};
+
+const cudaProbe: NvidiaCudaExportCapabilityProbe = {
+	platform: "win32",
+	appPackaged: true,
+	explicitEnabled: false,
+	explicitDisabled: false,
+	packagedAutoCandidateEnabled: true,
+	packagedAutoCandidateActive: true,
+	windowsGpuCompositorEnabled: true,
+	wrapperPath: "C:\\Recordly\\run-mp4-pipeline.mjs",
+	hasNvidiaGpu: true,
+	audioMode: "copy-source",
+	audioSkipReason: null,
+	stallTimeoutMs: 120_000,
+	skipReason: null,
+};
+
+const d3d11Probe: WindowsD3D11ExportCapabilityProbe = {
+	platform: "win32",
+	windowsGpuCompositorEnabled: true,
+	helperPath: "C:\\Recordly\\recordly-gpu-export.exe",
+	adapterIndexOverride: null,
+	preferHighPerformanceAdapter: true,
+	nvencSdkRequested: false,
+	skipReason: null,
+};
+
+describe("planNativeStaticLayoutRoutes", () => {
+	it("selects CUDA first and records D3D11 plus FFmpeg fallbacks", () => {
+		expect(
+			planNativeStaticLayoutRoutes({
+				cuda: cudaProbe,
+				d3d11: d3d11Probe,
+				source,
+			}),
+		).toEqual({
+			selectedRoute: "nvidia-cuda-compositor",
+			decisions: [
+				{
+					route: "nvidia-cuda-compositor",
+					status: "selected",
+					reasons: ["cuda-wrapper-and-nvidia-gpu-available"],
+				},
+				{
+					route: "windows-d3d11-compositor",
+					status: "fallback",
+					reasons: ["documented-fallback-if-cuda-runtime-fails"],
+				},
+				{
+					route: "ffmpeg-static-layout",
+					status: "fallback",
+					reasons: ["native-gpu-runtime-fallback"],
+				},
+			],
+			cuda: cudaProbe,
+			d3d11: d3d11Probe,
+			source,
+		});
+	});
+
+	it("selects D3D11 when CUDA is unavailable", () => {
+		const cuda = {
+			...cudaProbe,
+			hasNvidiaGpu: false,
+			skipReason: "nvidia-gpu-unavailable",
+		} satisfies NvidiaCudaExportCapabilityProbe;
+
+		expect(
+			planNativeStaticLayoutRoutes({
+				cuda,
+				d3d11: d3d11Probe,
+				source,
+			}),
+		).toMatchObject({
+			selectedRoute: "windows-d3d11-compositor",
+			decisions: [
+				{
+					route: "nvidia-cuda-compositor",
+					status: "rejected",
+					reasons: ["nvidia-gpu-unavailable"],
+				},
+				{
+					route: "windows-d3d11-compositor",
+					status: "selected",
+					reasons: ["documented-fallback-after-cuda-skip:nvidia-gpu-unavailable"],
+				},
+				{
+					route: "ffmpeg-static-layout",
+					status: "fallback",
+					reasons: ["windows-d3d11-runtime-fallback"],
+				},
+			],
+		});
+	});
+
+	it("selects FFmpeg when both native GPU routes are unavailable", () => {
+		const cuda = {
+			...cudaProbe,
+			wrapperPath: null,
+			skipReason: "cuda-wrapper-unavailable",
+		} satisfies NvidiaCudaExportCapabilityProbe;
+		const d3d11 = {
+			...d3d11Probe,
+			helperPath: null,
+			skipReason: "windows-gpu-helper-unavailable",
+		} satisfies WindowsD3D11ExportCapabilityProbe;
+
+		expect(
+			planNativeStaticLayoutRoutes({
+				cuda,
+				d3d11,
+				source,
+			}),
+		).toEqual({
+			selectedRoute: "ffmpeg-static-layout",
+			decisions: [
+				{
+					route: "nvidia-cuda-compositor",
+					status: "rejected",
+					reasons: ["cuda-wrapper-unavailable"],
+				},
+				{
+					route: "windows-d3d11-compositor",
+					status: "rejected",
+					reasons: ["windows-gpu-helper-unavailable"],
+				},
+				{
+					route: "ffmpeg-static-layout",
+					status: "selected",
+					reasons: ["native-gpu-routes-unavailable"],
+				},
+			],
+			cuda,
+			d3d11,
+			source,
+		});
+	});
+
+	it("preserves proxy source metadata for route diagnostics", () => {
+		const proxiedSource = {
+			inputCodec: "vp9",
+			proxyCodec: "h264",
+			proxyCreated: true,
+		};
+
+		expect(
+			planNativeStaticLayoutRoutes({
+				cuda: cudaProbe,
+				d3d11: d3d11Probe,
+				source: proxiedSource,
+			}).source,
+		).toEqual(proxiedSource);
+	});
+});
diff --git a/electron/ipc/export/nativeStaticLayoutRoutePlan.ts b/electron/ipc/export/nativeStaticLayoutRoutePlan.ts
new file mode 100644
index 000000000..3ee6c4e73
--- /dev/null
+++ b/electron/ipc/export/nativeStaticLayoutRoutePlan.ts
@@ -0,0 +1,132 @@
+import type { NativeVideoExportAudioMode } from "../nativeVideoExport";
+
+export type NativeStaticLayoutRoute =
+	| "nvidia-cuda-compositor"
+	| "windows-d3d11-compositor"
+	| "ffmpeg-static-layout";
+
+export interface NativeStaticLayoutRouteDecision {
+	route: NativeStaticLayoutRoute;
+	status: "selected" | "fallback" | "rejected";
+	reasons: string[];
+}
+
+export interface NvidiaCudaExportCapabilityProbe {
+	platform: NodeJS.Platform;
+	appPackaged: boolean;
+	explicitEnabled: boolean;
+	explicitDisabled: boolean;
+	packagedAutoCandidateEnabled: boolean;
+	packagedAutoCandidateActive: boolean;
+	windowsGpuCompositorEnabled: boolean;
+	wrapperPath: string | null;
+	hasNvidiaGpu: boolean | null;
+	audioMode: NativeVideoExportAudioMode;
+	audioSkipReason: string | null;
+	stallTimeoutMs: number | null;
+	skipReason: string | null;
+}
+
+export interface WindowsD3D11ExportCapabilityProbe {
+	platform: NodeJS.Platform;
+	windowsGpuCompositorEnabled: boolean;
+	helperPath: string | null;
+	adapterIndexOverride: number | null;
+	preferHighPerformanceAdapter: boolean;
+	nvencSdkRequested: boolean;
+	skipReason: string | null;
+}
+
+export interface NativeStaticLayoutRouteSource {
+	inputCodec: string;
+	proxyCodec?: string;
+	proxyCreated: boolean;
+}
+
+export interface NativeStaticLayoutRoutePlan {
+	selectedRoute: NativeStaticLayoutRoute;
+	decisions: NativeStaticLayoutRouteDecision[];
+	cuda: NvidiaCudaExportCapabilityProbe;
+	d3d11: WindowsD3D11ExportCapabilityProbe;
+	source: NativeStaticLayoutRouteSource;
+}
+
+export function planNativeStaticLayoutRoutes(options: {
+	cuda: NvidiaCudaExportCapabilityProbe;
+	d3d11: WindowsD3D11ExportCapabilityProbe;
+	source: NativeStaticLayoutRouteSource;
+}): NativeStaticLayoutRoutePlan {
+	const { cuda, d3d11, source } = options;
+	const decisions: NativeStaticLayoutRouteDecision[] = [];
+
+	if (!cuda.skipReason) {
+		decisions.push({
+			route: "nvidia-cuda-compositor",
+			status: "selected",
+			reasons: ["cuda-wrapper-and-nvidia-gpu-available"],
+		});
+		decisions.push({
+			route: "windows-d3d11-compositor",
+			status: d3d11.skipReason ? "rejected" : "fallback",
+			reasons: d3d11.skipReason
+				? [d3d11.skipReason]
+				: ["documented-fallback-if-cuda-runtime-fails"],
+		});
+		decisions.push({
+			route: "ffmpeg-static-layout",
+			status: "fallback",
+			reasons: ["native-gpu-runtime-fallback"],
+		});
+		return {
+			selectedRoute: "nvidia-cuda-compositor",
+			decisions,
+			cuda,
+			d3d11,
+			source,
+		};
+	}
+
+	decisions.push({
+		route: "nvidia-cuda-compositor",
+		status: "rejected",
+		reasons: [cuda.skipReason],
+	});
+
+	if (!d3d11.skipReason) {
+		decisions.push({
+			route: "windows-d3d11-compositor",
+			status: "selected",
+			reasons: [`documented-fallback-after-cuda-skip:${cuda.skipReason}`],
+		});
+		decisions.push({
+			route: "ffmpeg-static-layout",
+			status: "fallback",
+			reasons: ["windows-d3d11-runtime-fallback"],
+		});
+		return {
+			selectedRoute: "windows-d3d11-compositor",
+			decisions,
+			cuda,
+			d3d11,
+			source,
+		};
+	}
+
+	decisions.push({
+		route: "windows-d3d11-compositor",
+		status: "rejected",
+		reasons: [d3d11.skipReason],
+	});
+	decisions.push({
+		route: "ffmpeg-static-layout",
+		status: "selected",
+		reasons: ["native-gpu-routes-unavailable"],
+	});
+	return {
+		selectedRoute: "ffmpeg-static-layout",
+		decisions,
+		cuda,
+		d3d11,
+		source,
+	};
+}