# How to Sample Multiple Video Sources through Videowall Sometimes it is helpful to have multiple sources to sample lighting from, for example, if you want to sample from a fire video and a separate water video. There are many different ways to achieve this, in this article we'll show you how to sample multiple videos through a feature called Videowall. {% embed url="" %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://assimilate.gitbook.io/live-fx-documentation/lighting/how-to-sample-multiple-video-sources-through-videowall.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.