[LAD] simple silence detection tool

[Adrian Knoth]

On Sun, Feb 10, 2013 at 12:39:17PM +0100, Florian Paul Schmidt wrote:


> >I'm looking for a simple tool where I can point it at an http audio
> >stream, define a number of seconds to detect silence and exit with a
> >non-zero status if silence is detected.  It seems like this should be
> >easy but I've been search high and low for such a utility and nothing
> >simple exists.  Unfortunately I'm not much of a developer, but this
> >doesn't seem like it would be that difficult.  Maybe it's harder than
> >I think, hence no tool that I can find.

> Probably noone needed this precice functionality yet.

The radio guys have this stuff to see if their streams are still alive.

Ah, here it is:

    http://www.aelius.com/njh/silentjack/

Use any player (mplayer, cvlc, gstreamer) with jackd support to decode
your stream or use the usual anything-to-jackd magic to make your
consumer applications work with jackd.


Something like this:

   $ jackd -d dummy   (won't terminate and will not output anything)

   $ gst-launch uridecodebin uri=http://some.stream/ ! \
        audioconvert ! audioresample ! jackaudiosink connect=none

   $ mplayer -ao jack,port=SilentJack http://some.stream/   


> 1] A tool that can read from an http stream and write it into a pipe
> (maybe mplayer/mencoder)

mencoder is dead. mplayer, vlc, gstreamer and co are alive.



Cheers

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