diff --git a/server/operators/lipsync_local/run.py b/server/operators/lipsync_local/run.py
index 4c9a6a1..6a8871c 100644
--- a/server/operators/lipsync_local/run.py
+++ b/server/operators/lipsync_local/run.py
@@ -30,9 +30,8 @@ if p.get("shapes", "extended") == "basic":
 
 dialog = (p.get("dialog") or "").strip()
 if dialog:
-    tmp = outdir / "work"  # subdir: only top-level outdir files register as assets
-    tmp.mkdir(exist_ok=True)
-    dialog_file = tmp / "dialog.txt"
+    import tempfile
+    dialog_file = Path(tempfile.mkdtemp(prefix="rhubarb_")) / "dialog.txt"  # outside outdir: don't register as asset
     dialog_file.write_text(dialog + "\n")
     cmd += ["--dialogFile", str(dialog_file)]
 
diff --git a/server/operators/wan_video/run.py b/server/operators/wan_video/run.py
index 332c041..631ce3b 100644
--- a/server/operators/wan_video/run.py
+++ b/server/operators/wan_video/run.py
@@ -154,8 +154,8 @@ if not images:
     print("ERROR: no frames produced (timeout after 90min)")
     sys.exit(1)
 
-frames_dir = outdir / "work"  # subdir: keep raw frames out of asset registration
-frames_dir.mkdir(exist_ok=True)
+import tempfile
+frames_dir = Path(tempfile.mkdtemp(prefix="wan_frames_"))  # outside outdir so frames don't register as assets
 for i, im in enumerate(images):
     q = urllib.parse.urlencode({"filename": im["filename"],
                                 "subfolder": im.get("subfolder", ""),