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Synchronised audio playback on multiple players (clients, hosts) from single streaming server


The goal of this job is just one, particular feature of audio stream playback.

I need multiple audio stream players on multiple hosts, each player on a separate host, to play precisely synchronised audio, with guaranteed precision of 1-2ms. It has to be synchronised to real time, to local system clocks.

All the hosts, all clients and server, have system clocks synchronised very precisely, we can use them as a synchronised time reference.

A streaming server should be able to take input from files or from other audio streams.

The OS is Linux on clients. It would be an advantage if host OS for the server could be both Linux and Windows, but I can accept the solution limited to only one of them.

Mono audio stream.

The challenge is to synchronise multiple clients playing audio stream from the same, single audio streaming server. Every client (player) has to play the same position of the audio stream at the same time. For example we could have 100 clients (players) and we want them all to play exactly the same sound (stream position) at 9:43:15.436, where 9:43:15.436 is system clock time on each client. With precision like 1-2ms. Server could play audio from a file or from incoming audio stream (i.e. from a microphone). I can imagine a server has to add a kind of timestamps to the stream and clients have to read that timestamp and synchronise the payed stream position so that timestamp in the stream exactly matches the current time. Without a proper synchronisation mechanism various delays between stream source and its playback cause differences up to 200-300 ms even on LAN.

Preferably based on common standards.

This job is most suitable for an expert, who had done or configured this kind of synchronised solution already. I think it's easy and quick then. I can accept raising talents as well, but it may take you much time if you the related experience yet, I suppose.

I can do some development myself if you point me to the right direction, it;s not a problem for me. I can pay just for knowledge.

In your proposal please refer to the goal of the job.

Please feel free to ask if need any more data.

Please read the job posting thoroughly and carefully and please refer to it. The job is simple and quick, but requires specific experience. Please just make sure you have this experience. If you do, please don't hesitate to contact me.

Evner: C++ Programmering

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Om arbejdsgiveren:
( 4 bedømmelser ) Kielce, Poland

Projekt ID: #12550666

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