I know exactly what you're referring to because they do it a lot on Mexican free-to-air TV, but I don't think I've ever heard the terms for it, either in Spanish or English. Could "advertorial" be the English equivalent here?

Have a look at this Wikipedia entry and see if you think it fits. The entry on the Spanish page calls it a "publireportaje", but the definition isn't quite the same as it's basically describing an "infomercial", which I believe are generally much longer and are complete programmes in themselves.

"An advertorial is an advertisement in the form of editorial content. The term "advertorial" is a blend (see portmanteau) of the words "advertisement" and "editorial." Merriam-Webster dates the origin of the word to 1946.[1]

In printed publications, the advertisement is usually written to resemble an objective article and designed to ostensibly look like a legitimate and independent news story. In television, the advertisement is similar to a short infomercial presentation of products or services. These can either be in the form of a television commercial or as a segment on a talk show or variety show."
https://en.wikipedia.org/wiki/Advertorial

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