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)) {