Re: [LAD] Streaming AV/midi - Linux-audio-dev

1 Jul 2014

On Wed, July 2, 2014 5:16 am, drew Roberts wrote:
...
  On Tue, Jul 1, 2014 at 11:34 AM, Patrick Shirkey
 &lt;pshirkey(a)boosthardware.com
  wrote: 
>
> On Tue, July 1, 2014 10:41 pm, drew Roberts wrote:
> > On Tue, Jul 1, 2014 at 5:34 AM, Patrick Shirkey
> > &lt;pshirkey(a)boosthardware.com&gt;
>   wrote: > >
> >> Hi,
> >>
> >> Does anyone have a suggestion for open source solutions to enable
> >> streaming AV/midi to multiple ARM mobile devices with a one to many
> >> network configuration?
> >>
> >>
> >> - Icecast is very good at serving audio but iiuc does not support
> >> video/midi
> >>
> >>
> > IIRC, icecast2 can stream video. Never thought to try midi.
> >
>
> According to the icecast folks the latency and sync for a standard
> stream
> can get out to 10 seconds which is outside of my range. I could probably
> handle upto 2000ms but less than 1000ms is preferable.
>

 What are you thinking of using to do the "shouting"? IIRC, we were using
 vlc.

For this project I will probably have to build a custom tool that uses
ffmpeg for transcoding. VLC might be a good place to start but the
codebase is pretty large if I have to customise it so it's probably faster
to start from scratch.

...
  Concerning the sync, if you mean audio with video,
what we were doing did
 not require synced audio.

This project probably doesn't require realtime sample accurate sync but
the latency should be within 2000ms between audio and video streams and
also between master/client. Latency should be as low as possible with a
balance between cpuload and bandwidth management.

Has anyone benchmarked realtime transcoding on dual core arm devices with
ffmpeg?

...

 Anyway I will give icecast with video a test run before I rule it out.

 --
 Patrick Shirkey
 Boost Hardware Ltd
 __________________

 all the best,

 drew
 --
 http://freemusicpush.blogspot.com/

--
Patrick Shirkey
Boost Hardware Ltd