滤镜介绍

drawgrid

官网链接 =》 FFmpeg Filters Documentation

drawgrid会在视频上画一个网格。

滤镜使用

参数

x                 <string>     ..FV.....T. set horizontal offset (default "0")
   y                 <string>     ..FV.....T. set vertical offset (default "0")
   width             <string>     ..FV.....T. set width of grid cell (default "0")
   w                 <string>     ..FV.....T. set width of grid cell (default "0")
   height            <string>     ..FV.....T. set height of grid cell (default "0")
   h                 <string>     ..FV.....T. set height of grid cell (default "0")
   color             <string>     ..FV.....T. set color of the grid (default "black")
   c                 <string>     ..FV.....T. set color of the grid (default "black")
   thickness         <string>     ..FV.....T. set grid line thickness (default "1")
   t                 <string>     ..FV.....T. set grid line thickness (default "1")
   replace           <boolean>    ..FV.....T. replace color & alpha (default false)

• x,y  网格的左上角的位置
• width(w),height(h) 表示一个网格中一个单元（小网格）的宽和高
• color（c） 网格的颜色
• thickness(t)  网格线的宽度
• replace 是不是也在alpha上也画网格

案例

原图

ffmpeg -y -i ffm_media/liuyifei.jpeg  -filter_complex "drawgrid=width=100:height=100:thickness=2:[email protected]" result/drawgrid/drawgrid_test_default.jpg

ffmpeg -y -i ffm_media/liuyifei.jpeg  -filter_complex "drawgrid=w=iw/3:h=ih/3:t=2:[email protected]" result/drawgrid/drawgrid_test_001.jpg

## 祝你好运
 
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topic("有问题可以交流呀")
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