translate the note FFmpegHandler into English

translate the note FFmpegHandler into English

app/src/main/java/com/frank/ffmpeg/format/VideoLayout.java

@@ -1,15 +1,15 @@
 package com.frank.ffmpeg.format;
 
 /**
- * 视频布局
+ * layout of video
  * Created by frank on 2018/6/18.
  */
 
 public class VideoLayout {
 
-    //水平拼接
+    //horizontal join
     public final static int LAYOUT_HORIZONTAL = 1;
-    //垂直拼接
+    //vertical join
     public final static int LAYOUT_VERTICAL = 2;
 
 }

app/src/main/java/com/frank/ffmpeg/handler/FFmpegHandler.java

@@ -9,7 +9,7 @@ import com.frank.ffmpeg.model.MediaBean;
 import com.frank.ffmpeg.tool.JsonParseTool;
 
 /**
- * Handler消息处理器
+ * Handler of FFmpeg and FFprobe
  * Created by frank on 2019/11/11.
  */
 public class FFmpegHandler {
@@ -37,7 +37,8 @@ public class FFmpegHandler {
     }
 
     /**
-     * 执行ffmpeg命令行
+     * execute the command of FFmpeg
+     *
      * @param commandLine commandLine
      */
     public void executeFFmpegCmd(final String[] commandLine) {
@@ -64,7 +65,8 @@ public class FFmpegHandler {
     }
 
     /**
-     * execute probe cmd
+     * execute the command of FFprobe
+     *
      * @param commandLine commandLine
      */
     public void executeFFprobeCmd(final String[] commandLine) {