[文本处理] 批处理ffmpeg根据wav时长，把mp3覆盖到wav，求指教

@echo off
REM 1、下载并安装 FFmpeg 这个命令行工具
REM https://github.com/BtbN/FFmpeg-Builds/releases
REM 2、根据自己电脑实际安装路径设置以下临时环境变量
set "path=C:\Program Files\ffmpeg\ffmpeg-n6.0-latest-win64-gpl-6.0\bin\;%path%"

for /f "tokens=2 delims=, " %%a in ('ffmpeg.exe -i "input.wav" 2^>^&1 ^| find "Duration:"') do (
    set "str=%%a"
)
echo,%str%
pause
复制代码

@echo off
REM 1、下载并安装 FFmpeg 这个命令行工具
REM https://github.com/BtbN/FFmpeg-Builds/releases
REM 2、根据自己电脑实际安装路径设置以下临时环境变量
set "path=C:\Program Files\ffmpeg\ffmpeg-n6.0-latest-win64-gpl-6.0\bin\;%path%"

ffmpeg.exe -i "input.wav" -i "input.mp3" -filter_complex "[0:a][1:a]amerge=inputs=2[a]" -map "[a]" "output.mp3"
复制代码

@echo off
REM 1、下载并安装 FFmpeg 这个命令行工具
REM https://github.com/BtbN/FFmpeg-Builds/releases
REM 2、根据自己电脑实际安装路径设置以下临时环境变量
set "path=C:\Program Files\ffmpeg\ffmpeg-n6.0-latest-win64-gpl-6.0\bin\;%path%"

cd /d "%~dp0"
for %%i in (*.wav) do (
    set "InputWav=%%i"
)
for %%i in (*.mp3) do (
    set "InputMp3=%%i"
    set "Output=%%~ni_ok%%~xi"
)
ffmpeg.exe -i "%InputWav%" -i "%InputMp3%" -filter_complex "[0:a][1:a]amerge=inputs=2[a]" -map "[a]" "%Output%"
复制代码

@echo off
REM 1、下载并安装 FFmpeg 这个命令行工具
REM https://github.com/BtbN/FFmpeg-Builds/releases
REM 2、根据自己电脑实际安装路径设置以下临时环境变量
set "path=C:\Program Files\ffmpeg\ffmpeg-n6.0-latest-win64-gpl-6.0\bin\;%path%"

cd /d "%~dp0"
for %%i in (*.wav) do (
    set "InputWav=%%i"
)
for %%i in (*.mp3) do (
    set "InputMp3=%%i"
    set "Output=%%~ni_ok%%~xi"
)
ffmpeg.exe -i "%InputWav%" -i "%InputMp3%" -filter_complex "[0:0]volume=0.8[a];[1:0]volume=1.2[b];[a][b]amix=inputs=2:duration=shortest" -c:a libmp3lame "%Output%"
复制代码

@echo off
REM 1、下载并安装 FFmpeg 这个命令行工具
REM https://github.com/BtbN/FFmpeg-Builds/releases
REM 2、根据自己电脑实际安装路径设置以下临时环境变量
set "path=C:\Program Files\ffmpeg\ffmpeg-n6.0-latest-win64-gpl-6.0\bin\;%path%"

cd /d "%~dp0"
for %%i in (*.wav) do (
    set "InputWav=%%i"
    set "Output=%%~ni_ok%%~xi"
)
for %%i in (*.mp3) do (
    set "InputMp3=%%i"
)
ffmpeg.exe -i "%InputWav%" -i "%InputMp3%" -filter_complex "[0:0]volume=0.8[a];[1:0]volume=1.2[b];[a][b]amix=inputs=2:duration=shortest" -c:a pcm_s16le "%Output%"
复制代码

@echo off
REM 1、下载并安装 FFmpeg 这个命令行工具
REM https://github.com/BtbN/FFmpeg-Builds/releases
REM 2、根据自己电脑实际安装路径设置以下临时环境变量
set "path=C:\Program Files\ffmpeg\ffmpeg-n6.0-latest-win64-gpl-6.0\bin\;%path%"

cd /d "%~dp0"
for %%i in (*.wav) do (
    set "InputWav=%%i"
    set "Output=%%~ni_ok%%~xi"
)
for %%i in (*.mp3) do (
    set "InputMp3=%%i"
)
ffmpeg.exe -i "%InputWav%" -i "%InputMp3%" -filter_complex "[0:0]volume=0.8[a];[1:0]volume=1.2[b];[a][b]amix=inputs=2:duration=shortest" -c:a pcm_s16le "%Output%"
del /f /q "%InputWav%" "%InputMp3%"
复制代码