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# PHVideoRequestOptionsDeliveryMode.fastFormat

Photos provides whatever quality of video can be most quickly loaded.

```
case fastFormat
```

## Discussion

When the [`isNetworkAccessAllowed`](/documentation/Photos/PHVideoRequestOptions/isNetworkAccessAllowed) property is `true`, the fast option provides a version of the video asset suitable for streaming from iCloud over a low-quality connection—for example, an MP4 video with 360p resolution. If a higher-quality version is already cached on the device, Photos provides that video instead.

---

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