Efficient tools to build your streaming infrastructure

Nimio

Next-Gen Player for Low-Latency and Transparent Playback

Solving Modern Playback Challenges

In today’s streaming landscape, low latency and full playback control are essential—but traditional browser playback methods are holding developers back.

Most players rely on Media Source Extensions (MSE), which limit your ability to optimize buffering, decoding, and recovery. These black-box pipelines make it difficult to:

  • Achieve sub-second latency in unpredictable network conditions
  • Customize playback behavior for experimental protocols
  • Integrate fine-grained diagnostics and control mechanisms

For engineers building real-time streaming solutions, these constraints can be costly—both in terms of performance and innovation.

Nimio player

Introducing Nimio

Nimio is Softvelum’s next-generation, open-source media player designed to meet these challenges head-on.

Built on top of the modern WebCodecs API and using SLDP over WebSockets for transport, Nimio delivers a lightweight, modular architecture that puts developers in full control of every stage of playback—from packet to pixel.

Key Advantages

  • Ultra-Low Latency Playback
    WebSockets + SLDP ensure persistent, low-latency delivery with minimal overhead. WebCodecs enables direct decoding, reducing latency and improving responsiveness.
  • Transparent and Flexible Architecture
    No hidden buffering logic or opaque behavior. You control how media is received, decoded, and rendered.
  • Designed for Engineers
    Built as a toolkit, not a closed product—ideal for integrating into custom UIs, testing new delivery mechanisms, or building specialized workflows.
  • Open Source and Actively Developed
    Nimio is available on GitHub, fully open for contributions, extensions, and experimentation.

Who Should Use Nimio?

  • Engineers working on real-time or low-latency video delivery
  • Developers building custom playback experiences outside of MSE limitations
  • R&D teams testing new streaming protocols or adaptive playback strategies
  • Anyone looking for transparency and control in browser-based media playback

What’s Next?

Nimio will continue to evolve toward the full feature set of our SLDP Player, including:

  • Support for alternate audio and subtitles
  • Stream synchronization
  • Content protection workflows
  • and add more features to utilize full power of WebCodecs

Get Started

Explore the project and try it in your environment: use source code and release from GitHub.

Also:

Feel free to share your feedback via our helpdesk.