Update model references: Open-Sora-2 and Mochi-1-Preview

- hpcai-tech/Open-Sora-1.2 -> hpcai-tech/Open-Sora-2
- genmo/mochi -> genmo/mochi-1-preview

videogen.py

@@ -2484,7 +2484,7 @@ def update_all_models(hf_token=None):
         # 45-65GB models - Very High VRAM
         # ═══════════════════════════════════════════════════════════════
         ("hpcai-tech/Open-Sora", "OpenSoraPipeline", "~45-65 GB", "Open Sora - Open source Sora alternative"),
-        ("hpcai-tech/Open-Sora-1.2", "OpenSoraPipeline", "~45-65 GB", "OpenSora 1.2"),
+        ("hpcai-tech/Open-Sora-2", "OpenSoraPipeline", "~45-65 GB", "OpenSora 1.2"),
         
         # ═══════════════════════════════════════════════════════════════
         # 40-55GB models - High VRAM
@@ -2507,7 +2507,7 @@ def update_all_models(hf_token=None):
         # 18-22GB models
         # ═══════════════════════════════════════════════════════════════
         ("genmo/mochi-1-preview", "MochiPipeline", "~18-22 GB", "Mochi 1 Preview - High quality T2V"),
-        ("genmo/mochi", "MochiPipeline", "~18-22 GB", "Mochi - Latest version"),
+        ("genmo/mochi-1-preview", "MochiPipeline", "~18-22 GB", "Mochi - Latest version"),
     ]
     
     # Additional model variants to search for (organization/model patterns)
@@ -2536,7 +2536,7 @@ def update_all_models(hf_token=None):
         "THUDM/CogVideo",
         
         # Mochi variants
-        "genmo/mochi",
+        "genmo/mochi-1-preview",
     ]
     
     all_models = {}