How to automate mass-creation of "AI Avatar + Website Scroll" review videos? (Like this channel)

Hi BHW family,

I keep seeing these YouTube channels popping up that dominate low-volume keywords ("BrandName review", "Is BrandName legit?", etc.).

Here is an example:
The format is always the same:

Visual: A screen recording of the target website's landing page scrolling down.
Overlay: An AI Avatar (HeyGen/Synthesia style) talking in the corner.
Audio: TTS Voiceover claiming the platform is safe/legit.
Scale: They upload hundreds of these videos for different brands/keywords.

My question is:
How do they automate the screen recording part combined with the avatar generation?

I know how to use HeyGen for one video, but these guys are definitely not recording screens manually for 500 videos.

Is there a specific tool or a Python/FFmpeg workflow you guys recommend to:

1. Auto-visit a list of URLs and record a 30s scroll video.
2. Auto-generate the AI Avatar overlay (via API?).
3. Merge them together in bulk.

Looking for the most cost-effective way to build this pipeline. Any tools, scripts, or github repos suggestions?

Thanks!

hm interesting looking forward to more conversations on this post.

Hm nice looking forward to know about this method.

Let's see what experienced share's there thoughts on it.

No one is recording manually. It’s all browser automation + batch video processing. Once the pipeline is set, scaling to 500+ videos is easy.

Most of these guys automate it. Screen recording is usually done with Playwright/Puppeteer + FFmpeg (auto-scroll + capture). Avatar is generated via HeyGen/Synthesia API, then merged in bulk with FFmpeg.

Thanks !

If you are looking for api then i can help you get zoice avatar x model api for ai avatar generation which you can use in this workflow