@echo off
setlocal enabledelayedexpansion
set "str=ABCDEFGHIJKLMNOPQRS"

for /l %%i in (0,1,18) do (set "!str:~%%i,1!=%%i")

:main
set input=
set /p input=请输入A-S:
if not defined input goto main
set /a Ｗ=(!input!)*30

setlocal
:input_
set /p input_=请输入1-19:
if %input_% geq 20 goto input_
set /a Ｈ=(!input_!-1)*30


echo.
echo         [a]左上  [b]左下  [c]右上  [d]右下
echo.
set/p var=请选择[a/b/c/d]:
set var=!var:a=左上! && set var=!var:b=左下! && set var=!var:c=右上! && set var=!var:d=右下! && set var=!var: =!
echo.
if %var%==左上 set /a 宽=%Ｗ%+45 & set /a 高=(660-75)-%Ｈ% & set /a →=0 & set /a ↓=0 & goto ok
if %var%==左下 set /a 宽=%Ｗ%+45 & set /a 高=%Ｈ%+76 & set /a →=0 & set /a ↓=660-%Ｈ%-44 & goto ok
if %var%==右上 set /a 宽=628-%Ｗ%-46 & set /a 高=660-75-%Ｈ% & set /a →=%Ｗ%+44 & set /a ↓=0 & goto ok
if %var%==右下 set /a 宽=(18*30-%Ｗ%)+44 & set /a 高=%Ｈ%+76 & set /a →=%Ｗ%+44 & set /a ↓=(660-72)-%Ｈ% & goto ok

goto main

:ok
@for %%i in (1.png) do (ffmpeg.exe -i "%%i" -strict -2 -vf crop=%宽%:%高%:%→%:%↓% -y "%%~ni_切割%var%_%input%—%input_%%%~xi"
    if exist %%~ni_切割%var%_%input%—%input_%%%~xi  (cls&echo...............&echo %var%图片已输出_%input%和%input_%
    rundll32.exe shimgvw.dll,ImageView_Fullscreen %~dp0%%~ni_切割%var%_%input%—%input_%%%~xi)
)
endlocal
goto main

pause
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