[Jackaudio] Get raw pcm from jack port

Louis Foster sludge at low.show
Wed Apr 8 01:13:23 CEST 2020

Thanks, I'll give this a try. Hopefully it will allow me to select the specific capture port I want to stream from.

On Tue, 7 Apr 2020, at 23:09, Sam Mulvey wrote:
> On 4/7/20 2:02 PM, Louis Foster wrote:
> > I've been trying to find a good way to a stream of audio from jack 
> > into opusenc (the official opus encoder tool) and then pass it to 
> > something like oggfwd to send to Icecast. However, a few different 
> > things I've tried in python haven't worked out, and I'm trying to not 
> > have to rely on an "audio file player" (like sox or pyaudio) to sit in 
> > the middle. Now I'm wondering if there's a way I can get the raw pcm 
> > data from jack. Is this possible? Is there an existing tool?
> I use ffmpeg to stream Opus to icecast:
> /usr/bin/ffmpeg -f jack -i opus -vn -acodec libopus -ar 48000 -ac 2 -ab 
> 64k -content_type audio/ogg -f ogg 
> icecast://source:password@
> It's not the new flags, but it'd be straightforward to update.
> -Sam
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