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You can define ad rules that control how often a viewer sees ads while viewing your video content. **Ad rules can be used only while using the JWP or IMA advertising clients.**

  • If you are publishing playlists that consist of short-duration videos, like tutorials or product reviews, you can define `startOn` (the first playlist item allowing ad playback) and `frequency` (the regularity of ads within a playlist).

  • If you are publishing long-form content, like webinars or interviews, you can define `startOnSeek` (which determines if a returning visitor is served a pre-roll before resuming content playback) and `timeBetweenAds` (which sets the minimum time that must elapse between ads playback).

You can read [Ad rules reference](πŸ”—ο»Ώ) to learn more about how each ad rule impacts a user's experience.

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## Implementation

Use the following steps and code samples to define ad rules for the [player you added to your view](πŸ”—ο»Ώ) with an [ad schedule](πŸ”—ο»Ώ).

  1. Create a `JWAdRules` object using the <a href="https://sdk.jwplayer.com/ios/v4/reference/Classes/JWAdRulesBuilder.html" target="_blank">JWAdRulesBuilder()</a>.

  2. Assign the created `JWAdRules` object to your <a href="https://sdk.jwplayer.com/ios/v4/reference/Classes.html#/c:@M@JWPlayerKit@objc(cs)JWAdvertisingConfig" target="_blank">JWAdvertisingConfig</a> using either `JWAdsAdvertisingConfigBuilder()` or <a href="https://sdk.jwplayer.com/ios/v4/reference/Classes/JWImaAdvertisingConfigBuilder.html" target="_blank">JWImaAdvertisingConfigBuilder()</a>.

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## Examples

### Example 1: Short-form content

The following example illustrates a short-form media item with an IMA pre-roll. The first ad plays before the first playlist item (`startOn: 1`). Then, subsequent pre-rolls appear for every third playlist item (`frequency: 3`), starting with the fourth playlist item.


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### Example 2: Long-form content

The following example illustrates a long-form media item with multiple JWP ad breaks. The `startOnSeek` and `timeBetweenAds` (set to 300 seconds) ad rules have been defined.


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