# RenderObservation

URL: https://www.caprid.com/docs/reference/typescript/caprid/moq-media/interfaces/renderobservation/

Defined in: [render-clock.ts:14](https://github.com/caprids/relay-sdks/blob/main/ts/packages/moq-media/src/render-clock.ts#L14)

One observation: context time `contextUs` had been rendered by `atUs` on `performance.now()`'s clock.

## Properties

### atUs

```ts
atUs: number;
```

Defined in: [render-clock.ts:18](https://github.com/caprids/relay-sdks/blob/main/ts/packages/moq-media/src/render-clock.ts#L18)

When it was observed, in `performance.now()` microseconds.

***

### contextUs

```ts
contextUs: number;
```

Defined in: [render-clock.ts:16](https://github.com/caprids/relay-sdks/blob/main/ts/packages/moq-media/src/render-clock.ts#L16)

Context time, in microseconds: `currentTime × 1e6`, or a worklet frame count over its sample rate.