> For the complete documentation index, see [llms.txt](https://docs.exoclick.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.exoclick.com/tutorials/tutorials/publishers-tutorials/compatible-vast-wrapper-players.md).
# In-Stream: Compatible VAST Wrapper Players
In-Stream ad zones can serve two types of VAST elements: **Inline** and **Wrapper**. While an Inline element is your regular Video advertisement serving a standard video file, a **Wrapper** element contains a redirection to an external VAST tag, which in turn can also serve other Inline or Wrapper elements.
The most distinctive component is the `VASTAdTagURI`, which specifies the external VAST which this ad is redirecting to:
```xml
ExoClickCompany LtdCompany LtdThe time of day. Your general location (e.g. country or region). Websites or apps you may have visited.
```
In order to be able to monetize your traffic with these campaigns, you must ensure that the player you are using to display ads is **Wrapper compatible**, meaning that it can get and read the content within the wrapper tag.
The players listed in [In-Stream: How to implement In-Stream Part 2 - Implementation examples](/tutorials/tutorials/publishers-tutorials/how-implement-in-stream-part2.md) are 100% VAST compatible with our ads, meaning they will also work for Wrapper VAST tags:
* [**FluidPlayer**](https://www.fluidplayer.com/)
* [**JwPlayer**](https://jwplayer.com/)
* [**VideoJs**](https://videojs.com/)
* [**FlowPlayer**](https://flowplayer.com/)
* [**Kernel Video Sharing**](https://www.kernel-video-sharing.com/en/)
If you are not using any of the players listed above, please add the following **test VAST tag** to your player in order to test the player's Wrapper compatibility:
```xml
https://s.magsrv.com/v1/vast.php?idzone=3165233
```
This VAST tag is designed to always serve a Wrapper element. If your player cannot display this element, then consider updating or changing your player. If you are unable to change your player, then make sure to **disable VAST Wrapper support** of all your In-Stream ad zones.
By doing this, your In-Stream ad zones will not display any Wrapper elements, thus avoiding any issues on In-Stream ad serving and making sure your traffic can be monetized.
---
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