# Frequently Asked Questions
Why are my videos failing to send?
1: Windsor needs up to 24 hours to create a video for each new name that enters your list. \
In most cases if a video fails to send, the video isn't ready at the time your marketing automation is sending the video. Please make sure your automation is set up to wait at least 24 hours between the time a contact enters your list and sending the video.
2: It's also possible that the occasional video doesn't pass our quality checks. This is why we recommend adding a text-based alternative email in your automations to make sure the message is still being sent to your customer, albeit without the video.
How do I prevent sending duplicate videos?
It's wise to add a flow filter in your email marketing app to prevent people from entering the flow more than once and sending multiple videos to the same people.
In Klaviyo, a filter would look like this:
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# 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://docs.windsor.io/other/frequently-asked-questions.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.