diff --git a/extensions/deepinfra/video-generation-provider.test.ts b/extensions/deepinfra/video-generation-provider.test.ts
index 124b228dc937..ff1517087292 100644
--- a/extensions/deepinfra/video-generation-provider.test.ts
+++ b/extensions/deepinfra/video-generation-provider.test.ts
@@ -123,6 +123,34 @@ describe("deepinfra video generation provider", () => {
     expect(release).toHaveBeenCalledOnce();
   });
 
+  it("does not forward malformed video seed values", async () => {
+    postJsonRequestMock.mockResolvedValue({
+      response: {
+        json: async () => ({
+          video_url: "/generated/video.mp4",
+          request_id: "req_seed",
+          inference_status: { status: "succeeded" },
+        }),
+      },
+      release: vi.fn(async () => {}),
+    });
+
+    const provider = buildDeepInfraVideoGenerationProvider();
+    await provider.generateVideo({
+      provider: "deepinfra",
+      model: "deepinfra/Pixverse/Pixverse-T2V",
+      prompt: "A bicycle weaving through a rainy neon street",
+      cfg: {},
+      providerOptions: {
+        seed: 1.5,
+      },
+    });
+
+    expect(postJsonRequestMock).toHaveBeenCalledOnce();
+    const postRequest = requireFirstPostJsonRequest();
+    expect(Reflect.get(Reflect.get(postRequest ?? {}, "body") ?? {}, "seed")).toBeUndefined();
+  });
+
   it("reports malformed native video JSON as a provider error", async () => {
     const release = vi.fn(async () => {});
     postJsonRequestMock.mockResolvedValue({
diff --git a/extensions/deepinfra/video-generation-provider.ts b/extensions/deepinfra/video-generation-provider.ts
index a533d966c47b..cac81dc69da6 100644
--- a/extensions/deepinfra/video-generation-provider.ts
+++ b/extensions/deepinfra/video-generation-provider.ts
@@ -93,6 +93,14 @@ function resolveDurationSeconds(value: number | undefined): number | undefined {
   return value <= 6.5 ? 5 : 8;
 }
 
+function resolveSeed(value: unknown): number | undefined {
+  const seed = coerceProviderNumber(value);
+  if (seed == null || !Number.isSafeInteger(seed) || seed < 0 || seed > 4_294_967_295) {
+    return undefined;
+  }
+  return seed;
+}
+
 function buildDeepInfraVideoBody(
   req: VideoGenerationRequest,
   model: string,
@@ -109,7 +117,7 @@ function buildDeepInfraVideoBody(
   if (duration) {
     body.duration = duration;
   }
-  const seed = coerceProviderNumber(options.seed);
+  const seed = resolveSeed(options.seed);
   if (seed != null) {
     body.seed = seed;
   }