[FFmpeg-user] Generate "log.txt" of files with warning messages when normalizing LUFS

[CMG DiGiTaL]

Hi,
I'm using ffmpeg normalize loundnorm and some audios show "innacurete" or
"1152 samples" warning messages.

What I wanted to know is if there is a command that I can use to generate a
"log.txt" of only the files with alert messages, for my control?

Thank's
Claudio.