If you are looking for this specific content or community discussions, you can find active galleries and forums on: DeviantArt
These clips usually utilize green screen (chroma keying) and compositing to overlay a human model onto a digital or scale-model background. Community Platforms:
If you need to generate a plot for this specific "Giantess of 80" title:
: The study of scale differences, often involving "Tiny" characters interacting with giants.