how do i capture system sounds

[dexter855]

like say ime watching a youtube vid and i just want the audio

if there is none then is there a program for extracting audio from video(without changing the quality)

[b2bwild]

1. Download the Video.
2. type this commnd

mplayer -dumpaudio video.flv -dumpfile audio.mp3

OR. Audio in online video is of poor quality so you can use ffmeg insted of mplayer

ffmpeg -i video.flv -ab 128 -ar 44100 audio.mp3

[dexter855]

ok thanks, but now ime wondering, how do i do that to mp4 files cause not all youtube vids use flv

[b2bwild]

you can also use AVIDemux
Its easier than CLI.

[dexter855]

ok thanks for the info