- a python script
- visit each URL with Selenium
- interact the website as pause, scroll down, pause, and scroll up for 10 seconds in total
- use an unblocking screenrecording solution, which means you can interact and record the scree at the same time 
- iterate through URLs with each URL visit generates a video file

- a shell script
- slow down 10 seconds into 30 seconds video, because when Selenium scrolls the page, the Python API doesn't provde a good control over the scrolling speed and it looks unnatural.
- use last frame to fill up another 90 seconds becuase your video should focus on your sales pitch, not the their website, their website is only grab the attention
- wola, you got a 2 minute video

- manually by any video recorder
- crop your 2 minutes talking head video into a circle
- repositioned properly
- background should be pure black for overlay mask in the next step

- Manual setup for the very first time
    1. resize the talking head video and the website/profile video (the automated recording videos we got earlier) to same frame size so that they can be overlayed using `cv2`
    2. inspect the video to set proper codec, fps, and frame size for the overlay output file
- Each batch
    1. mask the black background of each talking head frame into transparent
    2. merge each mased talking head frame with website frame
    3. generate overlay video without audio
    4. add audio from original talking head video into the genreated overlay video
    5. I ran 100 videos each time which takes about 8 hours form URL to ready to send videos.

** you need to track the view rate of your video, so you need a video host and tracking solution**
**  only allows uploading 10 videos each time **