The relevant Michigan statute
Section 750.145c includes the following:
Sec. 145c.
(1) As used in this section:
(a) "Appears to include a child" means that the depiction appears to include, or conveys the impression that it includes, a person who is less than 18 years of age, and the depiction meets either of the following conditions:
(i) It was created using a depiction of any part of an actual person under the age of 18.
(ii) It was not created using a depiction of any part of an actual person under the age of 18, but all of the following apply to that depiction:
(A) The average individual, applying contemporary community standards, would find the depiction, taken as a whole, appeals to the prurient interest.
(B) The reasonable person would find the depiction, taken as a whole, lacks serious literary, artistic, political, or scientific value.
(C) The depiction depicts or describes a listed sexual act in a patently offensive way.
[. . .]
(k) "Prurient interest" means a shameful or morbid interest in nudity, sex, or excretion.
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It's likely that under the "appears to include a child" standard, the issue will be:
Based on "community standards" would an "average individual" find the video to appeal to "a shameful or morbid interest in sex"?
That seems like a stretch - but the bigger issue (IMO) is the use of the prosecutorial resources for a situation that would be more appropriately handled through civil litigation than criminal prosecution.