The angle of view of the background changes for each URL in a fixed webinar

We hold webinars several times a month.

The webinars are held separately by content using the registered webinar URL.

For each URL, there is a background that makes it difficult to see the detailed angle of view,

Some things may be displayed in the desired form

I would like to unify all displayed ranges if possible, is there any way to do this?

The same PC, accuracy, sitting position, etc. are set the same, but it differs depending on the URL.