You can use this command.
ffmpeg -f lavfi -i anullsrc=r=44100:cl=mono -t <seconds> -q:a 9 -acodec libmp3lame out.mp3
Change <seconds> to a number indicating the number of seconds of silence you require (for example, 60 will create a minute).
You can use this command.
ffmpeg -f lavfi -i anullsrc=r=44100:cl=mono -t <seconds> -q:a 9 -acodec libmp3lame out.mp3
Change <seconds> to a number indicating the number of seconds of silence you require (for example, 60 will create a minute).