update readme

update readme

README.md

@@ -54,10 +54,6 @@ android端基于FFmpeg库的使用。<br>
 
 ![静态图片](https://github.com/xufuji456/FFmpegAndroid/blob/master/picture/filter_sketch.png)
 
-![静态图片](https://github.com/xufuji456/FFmpegAndroid/blob/master/picture/filter_edge.png)
-
-![静态图片](https://github.com/xufuji456/FFmpegAndroid/blob/master/picture/filter_grid.png)
-
 视频画中画：
 
 ![静态图片](https://github.com/xufuji456/FFmpegAndroid/blob/master/picture/picture_in_picture.png)
@@ -70,10 +66,6 @@ android端基于FFmpeg库的使用。<br>
 
 ![动态图片](https://github.com/xufuji456/FFmpegAndroid/blob/master/gif/horizontal.gif)
 
-视频倒播：
-
-![动态图片](https://github.com/xufuji456/FFmpegAndroid/blob/master/gif/reverse.gif)
-
 ***
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