# Start now! Get the videos ready.

### Step 1 : get the videos ready.

Prepare a series of videos in **MP4 format** named sequentially as: 

**video1.mp4**, **video2.mp4**, **video3.mp4**, .... up to any quantity you prefer.

Store them anywhere on your computer for now.

Consider it done!

#### Also, monitor the size!

Large file sizes would not break the program but sometimes add extra seconds to your loading time and the overall reacting speed.

I recommend the following for video output:

1. Videos with **540 px in height** already provide more than enough resolution for this project. You can certainly go down from there without compromising video quality.
2. Choose the **H.264** codec. 

Generally, keeping each file **under 2MB** is a good practice. (Sharing your project through Github service may result in warnings for files over 50MB.)

#### You can rename the files manually or use editing softwares for some cool automation.

Click [here](https://quan-1.gitbook.io/interactive-video-grid/automate-sequential-naming-and-export-clips-from-a-timeline.) to see how you can do it with Final Cut Pro, DaVinci Resolve and Adobe Premiere.