# Using Chroma-key Background

The chroma-key is one of the video synthesis technology, which uses the difference in color tone to include a specific image or video in the background. And it’s commonly used in many film shoots.

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You can find the **Camera Chroma-Key** function by clicking the More-button located at the top left.

<figure><img src="https://1019928184-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlISC5rfB4Hnmbsjf8phq%2Fuploads%2Fx975dHe3plpRckeQQd2F%2FChroma%20key%201.png?alt=media&#x26;token=0ee3d127-854f-4d1a-8446-5c233821e30d" alt="" width="375"><figcaption></figcaption></figure>

The chroma-key function can be activated or deactivated through the function’s **ON** / **OFF** button.

<figure><img src="https://1019928184-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlISC5rfB4Hnmbsjf8phq%2Fuploads%2FWKJ0xAGdMBw9zrJap9ky%2FChroma%20key%202.png?alt=media&#x26;token=f1a43c01-faed-4b5f-93cb-f82f7a4244fd" alt=""><figcaption></figcaption></figure>

Select the target color with the **Color** button and adjust the range of colors with the **Similarity** button.

<figure><img src="https://1019928184-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlISC5rfB4Hnmbsjf8phq%2Fuploads%2Fqf2ql9LTm9R7ZYsnHXX5%2FChroma%20key%203.png?alt=media&#x26;token=cdafc69a-4b99-4ca8-9ae2-d405e9932dce" alt=""><figcaption></figcaption></figure>

The **Sensitivity** button allows you to adjust the naturalness between the background and the object. Also, you can customize background with **BG** button. You can use images and videos from your device or select from a variety of images and videos provided by the PRISM app as the chroma-key background.

<figure><img src="https://1019928184-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlISC5rfB4Hnmbsjf8phq%2Fuploads%2FrlMo0Pw2taPkAQlJfzWG%2FChroma%20key%204.png?alt=media&#x26;token=c7284b5a-a6c0-4283-8e18-7693ec4e4fb2" alt=""><figcaption></figcaption></figure>

<figure><img src="https://1019928184-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlISC5rfB4Hnmbsjf8phq%2Fuploads%2FyGPZK3301av3as5GZ7kc%2FChroma%20key%205.png?alt=media&#x26;token=39106970-6880-46a5-a819-15086bcaf236" alt=""><figcaption><p>You can use images and videos from your device as a chroma-key background.</p></figcaption></figure>

<figure><img src="https://1019928184-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlISC5rfB4Hnmbsjf8phq%2Fuploads%2F7Ay4qNN4nuoOl9bPWWHg%2FChroma%20key%206.png?alt=media&#x26;token=3656ec7e-ce9e-4b8d-b58f-3b9f84a24307" alt=""><figcaption><p>PRISM app provides a variety of images and videos that can be used as a chroma-key background.</p></figcaption></figure>

[..](https://guide.prismlive.com/mobile "mention"), [..](https://guide.prismlive.com/mobile/guides "mention"), [..](https://guide.prismlive.com/mobile/guides/features "mention"), [](https://guide.prismlive.com/mobile/guides/features/camera "mention")


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