port for separation audio from video in mp4 file

[John Nielsen]

On Monday 08 June 2009 03:05:20 pm Stefan Miklosovic wrote:
> title says it, i downloaded mp4 file by youtube-dl,
> but it downloaded video and audio as well. I would
> like to separate audio from that file.
>
> i try to find some port in /usr/ports/audio but nothing
> reasonable occudred.

For things that understand mp4 you should also look under 
ports/multimedia. The transcode program includes "tcextract" which is one 
way to do what you're asking.

JN