[LAD] Streaming AV/midi

[Patrick Shirkey]

On Wed, July 2, 2014 5:16 am, drew Roberts wrote:
> On Tue, Jul 1, 2014 at 11:34 AM, Patrick Shirkey
> <pshirkey at 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
>> > <pshirkey at boosthardware.com>
>> > 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