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# holoscan::ops::video_io::VideoLatencyHint

> Qualitative / quantitative latency hints.

Qualitative / quantitative latency hints.

```cpp showLineNumbers={false}
#include <holoscan/ops/video_io/video_io_capabilities.hpp>
```

---

## Member variables

| Name           | Type          | Description                                                                     |
| -------------- | ------------- | ------------------------------------------------------------------------------- |
| `qualitative`  | `std::string` | Opaque vendor or stack-specific latency class ("ultra\_low", "standard", etc.). |
| `estimated_ms` | `double`      | End-to-end estimate in milliseconds when known; negative if unavailable.        |