update sample video url

Author: debugly

Example/macOS/FFmpegTutorial-macOS/PrefixHeader.pch

@@ -27,8 +27,6 @@
 
 #endif
 
-// @"http://localhost:9228/Alphabet-48000.mp3";
-#define KTestVideoURL1 @"http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"
-#define KTestVideoURL2 @"https://data.vod.itc.cn/?new=/73/15/oFed4wzSTZe8HPqHZ8aF7J.mp4&vid=77972299&plat=14&mkey=XhSpuZUl_JtNVIuSKCB05MuFBiqUP7rB&ch=null&user=api&qd=8001&cv=3.13&uid=F45C89AE5BC3&ca=2&pg=5&pt=1&prod=ifox"
+#define KTestVideoURL1 @"http://docs.evostream.com/sample_content/assets/bunny.mp4"
 
 #endif /* PrefixHeader_pch */