Real-time audio streaming over network.
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Roc: real-time audio streaming over network

Roc is a library and tools for real-time streaming of high-quality audio over unreliable network.


  • guaranteed latency;
  • good quality of service on unreliable networks, such as 802.11 (Wi-Fi);
  • portability;
  • relying on open, standard protocols.


Docker images used in Travis are availale on Docker Hub. See Continuous integration page for details.

Branch Linux

Work in progress!

There is no public release yet. See Roadmap and open issues for current and future plans.

The upcoming 0.1 release will include the following features:

  • Simple public API for sender and receiver
  • Command line tools for sender and receiver
  • Network I/O
  • Sound I/O (in tools)
  • Audio processing pipeline with dynamic resampling
  • RTP support with uncompressed 16-bit linear PCM
  • FECFRAME support with Reed-Solomon and LDPC-Staircase FEC codes using OpenFEC
  • Documentation
  • Linux support, including Raspberry Pi
  • Mac OS X support
  • Proof of concept Roc-based network transport for PulseAudio



See examples on wiki. See also INSTALL for further details.

Try it

After building, tools are instaleld into bin/<host>/ directory.

Example usage:

  • Start receiver listening on all interfaces on UDP ports 10001 and 10002:

    $ roc-recv -vv -s :10001 -r :10002
  • Send WAV file to the receiver:

    $ roc-send -vv -s <receiver_ip>:10001 -r <receiver_ip>:10002 -i file.wav

See --help option for usage details.

Supported platforms

  • Linux
  • Mac OS X (work in progress)

There are plans to support other platforms, notably other *nix systems, Android, and maybe some embedded systems like FreeRTOS.

Supported protocols

There are plans to support RTCP, SAP/SDP, and RTSP in upcoming releases.


Contributions are always welcome! Please read CONTRIBUTING for general hints and look at Roadmap and open issues to figure out what's going on.

  • If you'd like to report a bug, ask a question, or suggest a feature, feel free to create an issue.

  • If you'd like to submit a patch, create a pull request. For non-trivial changes, it may be reasonable to start with discussing the implementation details in an existing or a new issue.


Roc source code is licensed under MPL-2.0, see LICENSE. Roc logos by botanicahouse are licensed under CC BY-SA 4.0.

Issues with external dependencies:

  • Roc may be configured to use FEC codec from OpenFEC, which is licensed under CeCILL, a GPL-like and GPL-compatible license. When Roc is built with OpenFEC support enabled, it must be distributed under a lincense compatible with CeCILL.