> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/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).

## Docs

- [VIOS Microservices](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vios-microservices.md): 
- [NVStreamer](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/nvstreamer.md): 
- [VST API Reference](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference.md): 
- [VST Sensor Management API](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-sensor-management-api.md): 
- [VST Sensor Management API Reference](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-sensor-management-api/vst-sensor-management-api-reference.md): The Sensor Management Service is a comprehensive system designed to facilitate the administration and control of   sensor-related functionalities. It streamlines sensor operations,
- [VST Live Stream Management API](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-live-stream-management-api.md): 
- [VST Live Stream Management API Reference](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-live-stream-management-api/vst-live-stream-management-api-reference.md): The Live Stream Service is designed to facilitate the live or real time streaming of sensors. This service encompasses:  - Live streaming: Live streaming of sensors using WebRTC pr
- [VST Replay Stream Management API](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-replay-stream-management-api.md): 
- [VST Replay Stream Management API Reference](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-replay-stream-management-api/vst-replay-stream-management-api-reference.md): The Replay Stream Service supports recorded sensor streaming using WebRTC, listing recorded streams, capturing snapshots, monitoring stream status in real time, playback controls (fast forward, rewind, seeking, play, and pause), performance statistics, and queries for stream position and metadata.
- [VST Record Stream Management API](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-record-stream-management-api.md): 
- [VST Record Stream Management API Reference](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-record-stream-management-api/vst-record-stream-management-api-reference.md): VST Stream Recorder MS is used to manage recording of sensors NOTE: All JSON responses from this service are emitted with HTTP header `Content-Type: text/plain`. The body itself is
- [VST Proxy Stream Management API](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-proxy-stream-management-api.md): 
- [VST Proxy Stream Management API Reference](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-proxy-stream-management-api/vst-proxy-stream-management-api-reference.md): VST Replay Stream MS is used to manage proxy RTSP URLs sensors NOTE: All JSON responses from this service are emitted with HTTP header `Content-Type: text/plain`. The body itself i
- [VST Storage Management API](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-storage-management-api.md): 
- [VST Storage Management API Reference](https://docs.nvidia.com/vss/dev/system-components/middleware/video-io-storage-vios/vst-api-reference/vst-storage-management-api/vst-storage-management-api-reference.md): The Storage Management is designed to facilitate the management of media files. For nvstreamer the media files are static media files that are scanned from the specified directory