diff --git a/README.md b/README.md
index de116f0..ecaf3b0 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,8 @@ It will automatically get the current window size and play with adaptive frame r
 - Only need one console
 - Window size updated in real time
 - Adaptive frame rate
+- Play offset control
+- Playback speed control
 - Beautiful timeline
 - Audio support