Ffmpeg recording screen and screenshot

  This article is about ffmpeg Under the premise of downloading and installing , Yes, then the last one ffmpeg Download the installation tutorial and introduction _ water w The blog of -CSDN Blog

Catalog

1、 Record soundless video

2、 Two videos are played successively ： Splice the two video files back and forth into one video file

3、 Two videos play at the same time , Both left and right display , And the separation in the middle is a red background

4、 Two videos play at the same time , Both up and down

 5、 Screenshot designated area

6、 Recording screen   Specify the desktop area

7、 Recording screen designated area   Clip existing videos

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1、 Record soundless video

（1） open cmd, Enter the command , 

ffmpeg -f gdigrab -i desktop -pix_fmt yuv420p .\out.mp4

（2） After the command is run , We found the video by following the path , Open the generated video ,

Be careful ： The default save path of the generated video is in the folder where the command is located , 

eg： I was in C:\user\ water \ Executed under cmd command , Therefore, after the video is generated, it will be saved in this path .

2、 Two videos are played successively ： Splice the two video files back and forth into one video file

（1） Open Notepad , Create a new one “videolist.txt” file , The video to be spliced should be written inside ,

At this time, the structure of the folder is ：

（2）  Open under folder cmd, Enter the command ,  

ffmpeg.exe -f concat -i video/videolist.txt joinoutput.mp4

Be careful ：  I was in D:\ffmpeg-5.0.1-essentials_build Under the folder （ The video to be spliced is in this path video Folder ）, open cmd, Enter the command ,

 （3） After the command is run , We found the video by following the path , Open the generated video ,

3、 Two videos play at the same time , Both left and right display , And the separation in the middle is a red background

（1） open cmd, Enter the command ,  

ffmpeg -i video\out.mp4 -i video\out1.mp4 -filter_complex "pad=4000:1080:color=red[x0];[0:v]scale=w=1920:h=1080[inn0];[x0][inn0]overlay=0:0[x1];[1:v]scale=w=1920:h=1080[inn1];[x1][inn1]overlay=2000:0" out14.mp4

（2） After the command is run , We found the video by following the path , Open the generated video ,

4、 Two videos play at the same time , Both up and down

（1） open cmd, Enter the command ,  

ffmpeg -i video\out.mp4 -i video\out1.mp4 -filter_complex "pad=1920:2160:color=green[x0];[0:v]scale=w=1920:h=1080[inn0];[x0][inn0]overlay=0:0[x1];[1:v]scale=w=1920:h=1080[inn1];[x1][inn1]overlay=0:1080" out15.mp4

 （2） After the command is run , We found the video by following the path , Open the generated video ,

 5、 Screenshot designated area

（1） open cmd, Enter the command ,  

ffmpeg -f gdigrab -s 500x500 -offset_x 100 -offset_y 100 -i desktop   -frames:v 1 test.png

 

 （2） After the command is run , We found the screenshot according to the path , Open the generated screenshot ,

 

6、 Recording screen   Specify the desktop area

（1） open cmd, Enter the command ,  

ffmpeg.exe -r 1 -f gdigrab -s 500x500 -offset_x 100 -offset_y 100  -i desktop -vcodec libx264  a.mp4

 （2） After the command is run , We can find the generated video by following the path ,

7、 Recording screen designated area   Clip existing videos

Ideas ： Capture the existing video file in the specified area  

（1） open cmd, Enter the command ,  

ffmpeg -i 0614.mp4 -vf crop=200:200:0:0 0614-1.mp4

 （2） After the command is run , We can find the generated video by following the path ,