diff --git a/multi_Thread/ledThreads/2020_08_14.md b/multi_Thread/ledThreads/2020_08_14.md
index 1949d972e7a6f6c3cff42aba6fd00e6b2eefe623..a26aabbb099b3f7200969da5fb1e3a594aa4c3fe 100644
--- a/multi_Thread/ledThreads/2020_08_14.md
+++ b/multi_Thread/ledThreads/2020_08_14.md
@@ -97,19 +97,19 @@ Makefile이 생성된 후, make를 입력하여 응용 프로그램을 생성하
 ####  3-1) ./main
 
 
-<video source src = "./0.mp4" controls>
+<video src = "./0.mp4" controls>
 </video>
 <br><br>
 
 ####  3-2) ./main 1 5
 
-<video source src = "./1.mp4" controls>
+<video src = "1.mp4" controls>
 </video>
 ####  3-2) ./main 2 7
 
-<video source src = "./2.mp4" controls>
+<video src = "2.mp4" controls>
 </video>
 ####  3-2) ./main 3 6
 
-<video source src = "./3.mp4" controls>
+<video src = "3.mp4" controls>
 </video>
\ No newline at end of file