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Audio file conversion for Alexa skills
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| # Convert audio to SSML compatible mp3 | |
| ffmpeg -i <input-file> -ac 2 -codec:a libmp3lame -b:a 48k -ar 16000 <output-file.mp3> | |
| # Normalize audio | |
| ffmpeg -i <input-file.mp3> -af loudnorm=I=-14:TP=-3:LRA=11:print_format=json -b:a 48k -ar 16000 <output-file.mp3> | |
| # Do both at the same time | |
| ffmpeg -i <input-file.mp3> -ac 2 -codec:a libmp3lame -af loudnorm=I=-16:TP=-3:LRA=11:print_format=json -b:a 48k -ar 16000 <output-file.mp3> |
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.bat
@echo off
:: Ruta del archivo de entrada y salida
set INPUT_FILE=input.mp3
set OUTPUT_FILE=output.mp3
:: Convertir audio a MP3 compatible con SSML
ffmpeg -i "%INPUT_FILE%" -ac 2 -codec:a libmp3lame -b:a 48k -ar 16000 "%OUTPUT_FILE%"
if errorlevel 1 (
echo Error al convertir el audio.
exit /b 1
)
:: Normalizar audio
ffmpeg -i "%OUTPUT_FILE%" -af loudnorm=I=-14:TP=-3:LRA=11 -b:a 48k -ar 16000 "%OUTPUT_FILE%"
if errorlevel 1 (
echo Error al normalizar el audio.
exit /b 1
)
:: Hacer ambas cosas al mismo tiempo
ffmpeg -i "%INPUT_FILE%" -ac 2 -codec:a libmp3lame -af loudnorm=I=-16:TP=-3:LRA=11 -b:a 48k -ar 16000 "%OUTPUT_FILE%"
if errorlevel 1 (
echo Error al convertir y normalizar el audio.
exit /b 1
)
echo Operación completada con éxito.
pause