diff --git a/README.md b/README.md
index b2f8ee0..f76407a 100644
--- a/README.md
+++ b/README.md
@@ -15,13 +15,18 @@ __init__(self, start_time=None, end_time=None, sample_type=None, args=None)
 Args:
 
 - start_time: float
+
 - end_time: float
-  decode video [start_time, end_time)
 
-  sample_type:
+  decode video from start_time to end_time
+
+-  sample_type: str
+  
         uniform_temporal_subsample
-        args:
-                num_samples: int
+
+-  args: dict
+  
+      num_samples: int
 
 
 ```python