1.split.bat

echo off

setlocal enabledelayedexpansion

set input=input.mp4

set outputFront=P

set startTime=00:00:00

set /a timeInterval=30

set endTime=00:02:46

call:timeToSec %startTime% s

set /a startSec=%s%

call:timeToSec %endTime% s

set /a endSec=%s%

set /a count=(%endSec%-%startSec%)/%timeInterval%

set /a rest=(%endSec%-%startSec%)%%%timeInterval%

if %rest% neq 0 (

set /a count=%count%+1

)

echo startSec=%startSec%,endSec=%endSec%,rest=%rest%,count=%count%

echo.

for /l %%i in (1,1,%count%) do (

set /a new=!startSec!+%timeInterval%

echo !new!

echo.

set st=void

call:secToTime !startSec! st

if !new! leq !endSec! (

set ed=void

call:secToTime !new! ed

set /a startSec=!new!

echo if1_: !startSec!

) else (

set ed=void

call:secToTime !endSec! ed

set /a startSec=!endSec!

echo if2_: !startSec!

)

echo loop:?%%i,start:?!st!,end:?!ed!

echo.

echo.

rem ffmpeg -i input.mp4 -ss 00:00:00 -to 00:01:30 -c:a copy -c:v copy output.mp4

ffmpeg -i %input% -ss !st! -to !ed! -y -c:a copy -c:v copy "%outputFront%%%i.mp4"

)

pause

REM==========================

:timeToSec

setlocal

set tt=%~1

set /a tt1=%tt:~0,2%

set /a tt2=%tt:~3,2%

set /a tt3=%tt:~6,2%

set /a ss=%tt1%*3600+%tt2%*60+%tt3%

(endlocal

set %~2=%ss%

)

goto:eof

REM==========================

:secToTime

setlocal

set /a s=%~1

set /a s1=%s%/3600

set /a s2=(%s%/60)%%60

set /a s3=%s%%%60

set tt=%s1%:%s2%:%s3%

(endlocal

set %~2=%tt%

)

goto:eof

2.changeFormat.bat

echo off

set inputFront=P

set concatNum=6

set originFormat=.mp4

set outputFormat=.ts

set inputName=concat:

for /l %%i in (1,1,%concatNum%) do (

echo %inputFront%%%i%originFormat%,%inputFront%%%i%outputFormat%

echo.

echo.

rem ffmpeg -i input.mp4 -c:a copy -c:v copy output.ts

ffmpeg -i %inputFront%%%i%originFormat% -y -c:a copy -c:v copy %inputFront%%%i%outputFormat%

)

pause

3.concat.bat

echo off

setlocal enabledelayedexpansion

set inputFront=P

set concatNum=6

set format=.ts

set outputName=test.mp4

set inputName=concat:

for /l %%i in (1,1,%concatNum%) do (

if %%i == %concatNum% (

set inputName=!inputName!%inputFront%

set inputName=!inputName!%%i%format%

) else (

set inputName=!inputName!%inputFront%

set inputName=!inputName!%%i%format%^|

)

)

echo !inputName!

rem ffmpeg -i "concat:01.ts|02.ts|03.ts" -c copy out.mp4

ffmpeg -i !inputName! -y -c:a copy -c:v copy %outputName%

pause

4.split2.bat

@echo off & title

cd /d %~dp0

for %%a in (*.mp4) do (

?ffmpeg -i "%%~sa" -y -codec copy -map 0 -f segment -segment_time 30 -q:v 1 "P%%02d.mp4"

)

pause