> This page is for version 3.3.0 (default).
> For other versions, use one of these documentation indexes:
> - 3.3.0 (default): https://docs.nvidia.com/vss/3.3.0/llms.txt
> - Dev: https://docs.nvidia.com/vss/dev/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/vss/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/vss/_mcp/server.

# Video IO & Storage (VIOS)

Video IO & Storage (VIOS) manages cameras and video for VSS: it ingests live and recorded streams, stores and replays video, and exposes it to other services through REST APIs.

* [VIOS Microservices](/system-components/middleware/video-io-storage-vios/vios-microservices) - Overview and key features: camera discovery, recording, RTSP proxy, and WebRTC/DASH streaming.
* [NVStreamer](/system-components/middleware/video-io-storage-vios/nvstreamer) - Serve video files as RTSP streams to test VIOS without cameras.
* VST API Reference - REST APIs for sensor, live stream, replay stream, record stream, proxy stream, and storage management. Pick one from the navigation, for example [VST Sensor Management API](/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-sensor-management-api).