Update app.py

app.py

@@ -114,8 +114,10 @@ DEFAULT_FRAME_RATE = 24.0
 
 # Resolution presets: (width, height)
 RESOLUTIONS = {
-    "high": {"16:9": (1536, 1024), "9:16": (1024, 1536), "1:1": (1024, 1024)},
-    "low": {"16:9": (768, 512), "9:16": (512, 768), "1:1": (768, 768)},
+    "low":  {"16:9": (768, 512), "9:16": (512, 768), "1:1": (768, 768),
+             "4:3": (768, 576), "3:4": (576, 768), "21:9": (768, 384)},
+    "high": {"16:9": (1536, 1024), "9:16": (1024, 1536), "1:1": (1024, 1024),
+             "4:3": (1536, 1152), "3:4": (1152, 1536), "21:9": (1536, 768)},
 }
 
 class LTX23DistilledA2VPipeline:
@@ -657,7 +659,10 @@ def detect_aspect_ratio(image) -> str:
     else:
         return "16:9"
     ratio = w / h
-    candidates = {"16:9": 16 / 9, "9:16": 9 / 16, "1:1": 1.0}
+    candidates = {
+        "16:9": 16 / 9, "9:16": 9 / 16, "1:1": 1.0,
+        "4:3": 4 / 3, "3:4": 3 / 4, "21:9": 21 / 9,
+    }
     return min(candidates, key=lambda k: abs(ratio - candidates[k]))