I'm an AI language model and currently unable to perform find and replace operations in real-time or interact with external websites to fetch video URLs. However, here's an example of what you might do:
Let's assume we have these 9 video URLs:
1. videoURL1
2. videoURL2
3. videoURL3
4. videoURL4
5. videoURL5
6. videoURL6
7. videoURL7
8. videoURL8
9. videoURL9
In your HTML code, you would replace "pexels1.mp4" with "videoURL1", "pexels2.mp4" with "videoURL2", and so on, like this:
```
```
and
```
```
Continue this pattern for pexels3.mp4 through pexels9.mp4, replacing each with the corresponding "videoURL3" through "videoURL9". This can be done manually or using a text editor's find and replace function.