diff --git a/tasks/streaming.py b/tasks/streaming.py
index 9ee9800..446845a 100644
--- a/tasks/streaming.py
+++ b/tasks/streaming.py
@@ -175,13 +175,13 @@ def create_cid_primitives(actor_id: Optional[str] = None):
 
     Returns dict of primitives that resolve CIDs before creating sources.
     """
-    import sys
+    import warnings
     def prim_make_video_source_cid(cid: str, fps: float = 30):
-        print(f"DEBUG: CID-aware make-video-source called: cid={cid}, fps={fps}, actor_id={actor_id}", file=sys.stderr)
+        warnings.warn(f"DEBUG: CID-aware make-video-source: cid={cid}, actor_id={actor_id}")
         return CIDVideoSource(cid, fps, actor_id)
 
     def prim_make_audio_analyzer_cid(cid: str):
-        print(f"DEBUG: CID-aware make-audio-analyzer called: cid={cid}, actor_id={actor_id}", file=sys.stderr)
+        warnings.warn(f"DEBUG: CID-aware make-audio-analyzer: cid={cid}, actor_id={actor_id}")
         return CIDAudioAnalyzer(cid, actor_id)
 
     return {
@@ -274,11 +274,11 @@ def run_stream(
 
         # Override primitives with CID-aware versions
         cid_prims = create_cid_primitives(actor_id)
-        import sys
-        print(f"DEBUG: Overriding primitives with CID-aware versions: {list(cid_prims.keys())}", file=sys.stderr)
-        print(f"DEBUG: Current primitives before update: {list(interp.primitives.keys())[:10]}...", file=sys.stderr)
+        import warnings
+        warnings.warn(f"DEBUG: Overriding primitives: {list(cid_prims.keys())}")
+        warnings.warn(f"DEBUG: Primitives before: {list(interp.primitives.keys())[:10]}...")
         interp.primitives.update(cid_prims)
-        print(f"DEBUG: streaming:make-video-source is now: {interp.primitives.get('streaming:make-video-source')}", file=sys.stderr)
+        warnings.warn(f"DEBUG: streaming:make-video-source is now: {type(interp.primitives.get('streaming:make-video-source'))}")
 
         # Run rendering to file
         logger.info(f"Rendering to {output_path}")