Update app.py

app.py

@@ -122,8 +122,8 @@ def render_logo_html(px: int = 96) -> str:
     <div style="display:flex;align-items:center;gap:16px;">
       <img src="data:image/png;base64,{LOGO_B64}" style="height:{px}px;width:auto;" />
       <div>
-        <div style="font-size:1.6rem;font-weight:800;">Bifröst Beam</div>
-        <div style="opacity:0.8;">Video → Frames → Upscale (Nordic Inspired)</div>
+        <div style="font-size:1.6rem;font-weight:800;">Bifröst Video to Image</div>
+        <div style="opacity:0.8;">Video → Frames → Upscale → Re-encode</div>
       </div>
     </div>
     <hr>
@@ -570,7 +570,12 @@ def step1_extract(
 
     frames = sorted(raw_dir.glob(f"{prefix}_*.{out_format}"), key=_natural_key)
 
-    [str(p) for p in frames]   # show all extracted frames
+    # Adaptive preview
+    if len(frames) <= 100:
+        gallery = [str(p) for p in frames]   # show all if small set
+    else:
+        gallery = sample_paths(frames, 100)  # evenly sample 100
+
     zip_path = work / "frames.zip"
     with zipfile.ZipFile(zip_path, "w", zipfile.ZIP_DEFLATED) as zf:
         for p in frames: