How can i use ffmpeg to extract audio from an video every 5 seconds

Question

I need to extract audio from live stream. I want to generate an audio file every 5s.

• if i use the command ffmpeg -i ***.flv -c:a aac -fs 128k output.aac<

Answer 1

Use the segment muxer:

ffmpeg -i input -map 0:a -f segment -segment_time 5 output_%03d.aac

Add -c copy and use a compatible output container format if you don't want to re-encode.