diff --git a/eval/vbench_i2v/calc_vbench_i2v.py b/eval/vbench_i2v/calc_vbench_i2v.py
index a96c812..4bc2297 100644
--- a/eval/vbench_i2v/calc_vbench_i2v.py
+++ b/eval/vbench_i2v/calc_vbench_i2v.py
@@ -20,14 +20,25 @@ video_quality_dimensions = [
 i2v_dimensions = ["i2v_subject", "i2v_background", "camera_motion"]
 
 
+def str2bool(v):
+    if isinstance(v, bool):
+        return v
+    if v.lower() in ("yes", "true", "t", "y", "1"):
+        return True
+    elif v.lower() in ("no", "false", "f", "n", "0"):
+        return False
+    else:
+        raise argparse.ArgumentTypeError("Boolean value expected.")
+
+
 def parse_args():
     parser = argparse.ArgumentParser()
     parser.add_argument("video_folder", type=str)  # samples/samples..._vbench_i2v/
     parser.add_argument("model_ckpt", type=str)
     parser.add_argument("--start", type=int, default=0)  # start index of dimension to be evaluated
     parser.add_argument("--end", type=int, default=-1)  # start index of dimension to be evaluated
-    parser.add_argument("--calc_i2v", type=bool, default=True)
-    parser.add_argument("--calc_quality", type=bool, default=True)
+    parser.add_argument("--calc_i2v", type=str2bool, default=True)
+    parser.add_argument("--calc_quality", type=str2bool, default=True)
     args = parser.parse_args()
     return args
 
@@ -40,7 +51,7 @@ if __name__ == "__main__":
 
     start_time = time.time()
 
-    if args.calc_i2v:
+    if args.calc_i2v == 1:
         my_VBench_I2V = VBenchI2V(torch.device("cuda"), full_info_path, output_dir)
         if args.end == -1:  # adjust end accordingly
             args.end = len(i2v_dimensions)
@@ -50,7 +61,7 @@ if __name__ == "__main__":
     kwargs = {}
     kwargs["imaging_quality_preprocessing_mode"] = "longer"  # use VBench/evaluate.py default
 
-    if args.calc_quality:
+    if args.calc_quality == 1:
         if args.end == -1:  # adjust end accordingly
             args.end = len(video_quality_dimensions)
         my_VBench = VBench(torch.device("cuda"), full_info_path, output_dir)