fix: provide real image files for video key; set load_original_video=True

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

configs/diffusion/train/smoke_test.py

@@ -10,7 +10,7 @@ dataset = dict(
     data_path="/data/train-input/smoke_test/data.csv",
     cached_video=True,
     cached_text=True,
-    load_original_video=False,
+    load_original_video=True,
     memory_efficient=False,
     vmaf=False,
 )

scripts/diffusion/gen_smoke_data.py

@@ -22,6 +22,7 @@ Shape 说明（256px 单帧，AE_SPATIAL_COMPRESSION=16，patch_size=2）：
 import os
 import csv
 import torch
+from PIL import Image
 
 N_SAMPLES = 4           # 生成 4 条假样本
 BASE_DIR  = "/data/train-input/smoke_test"
@@ -35,21 +36,27 @@ def main():
     os.makedirs(f"{BASE_DIR}/latents", exist_ok=True)
     os.makedirs(f"{BASE_DIR}/t5",      exist_ok=True)
     os.makedirs(f"{BASE_DIR}/clip",    exist_ok=True)
+    os.makedirs(f"{BASE_DIR}/images",  exist_ok=True)
     os.makedirs(NULL_DIR, exist_ok=True)
 
     rows = []
     for i in range(N_SAMPLES):
+        img_path  = f"{BASE_DIR}/images/sample_{i}.png"
         lat_path  = f"{BASE_DIR}/latents/sample_{i}.pt"
         t5_path   = f"{BASE_DIR}/t5/sample_{i}.pt"
         clip_path = f"{BASE_DIR}/clip/sample_{i}.pt"
 
+        # 真实的 256×256 图片（用于 load_original_video=True 时的原始帧加载）
+        img = Image.new("RGB", (256, 256), color=(i * 60 % 256, 128, 200))
+        img.save(img_path)
+
         torch.save(torch.randn(LAT_C, LAT_T, LAT_H, LAT_W), lat_path)
         torch.save(torch.randn(T5_SEQ, T5_DIM),              t5_path)
         torch.save(torch.randn(CLIP_DIM),                     clip_path)
 
         rows.append({
             "id":             i,
-            "path":           lat_path,   # 占位（cached 模式不读原始视频）
+            "path":           img_path,   # 真实图片路径（dataset 读取原始帧用）
             "text":           f"smoke test sample {i}",
             "num_frames":     1,          # 单帧图像
             "height":         256,