diff --git a/README.md b/README.md
index d90fe0a..d13b523 100644
--- a/README.md
+++ b/README.md
@@ -252,7 +252,7 @@ vvencapp -i out.yuv -s 854x480 -r 30 -o vvc.266
 TIP: You could do alternative without taking much disk space for uncompressed video (Y4M, Recommended):
 
 ```
-ffmpeg -i example.mp4 -pix_fmt yuv420p -f yuv4mpegpipe - | vvencapp -i - --preset medium --qp 35 -o converted.266
+ffmpeg -i example.mp4 -pix_fmt yuv420p -f yuv4mpegpipe - | vvencapp --y4m -i - --preset medium --qp 35 -o converted.266
 ```
 
 **PRO TIP: VVENC can detect your fps and video size for y4m file format, so you don't need insert video size and frame per second of vvenc.**