diff --git a/src/__test__/utils/valid.test.ts b/src/__test__/utils/valid.test.ts
new file mode 100644
index 0000000..540fbf3
--- /dev/null
+++ b/src/__test__/utils/valid.test.ts
@@ -0,0 +1,55 @@
+import { makeStandardFetcher } from "@/fetchers/standardFetch";
+import { makeProviders } from "@/main/builder";
+import { targets } from "@/main/targets";
+import { isValidStream } from "@/utils/valid";
+import fetch from "node-fetch";
+import { describe, it, expect } from "vitest";
+
+describe('isValidStream()', () => {
+  it('should pass valid streams', () => {
+    expect(isValidStream({
+      type: "file",
+      flags: [],
+      qualities: {
+        "1080": {
+          type: "mp4",
+          url: "hello-world"
+        }
+      }
+    })).toBe(true);
+    expect(isValidStream({
+      type: "hls",
+      flags: [],
+      playlist: "hello-world"
+    })).toBe(true);
+  });
+
+  it('should detect empty qualities', () => {
+    expect(isValidStream({
+      type: "file",
+      flags: [],
+      qualities: {}
+    })).toBe(false);
+  });
+  
+  it('should detect empty stream urls', () => {
+    expect(isValidStream({
+      type: "file",
+      flags: [],
+      qualities: {
+        "1080": {
+          type: "mp4",
+          url: "",
+        }
+      }
+    })).toBe(false);
+  });
+    
+  it('should detect emtpy HLS playlists', () => {
+    expect(isValidStream({
+      type: "hls",
+      flags: [],
+      playlist: "",
+    })).toBe(false);
+  });
+});
diff --git a/src/main/runner.ts b/src/main/runner.ts
index 866ffb9..700dbe4 100644
--- a/src/main/runner.ts
+++ b/src/main/runner.ts
@@ -80,7 +80,7 @@ export async function runAllProviders(list: ProviderList, ops: ProviderRunnerOpt
           ...contextBase,
           media: ops.media,
         });
-      if (!isValidStream(output?.stream)) {
+      if (output?.stream && !isValidStream(output?.stream)) {
         throw new NotFoundError('stream is incomplete');
       }
       if (output?.stream && !flagsAllowedInFeatures(ops.features, output.stream.flags)) {