A bit of context: I'm employed as a software developer at a moderately sized IT firm. In my freetime, I do freelance videography work. The internal marketing departement is quite small and only have basic knowledge about video content. I am now regularly asked for help and even shot a few event films for the company - my actual manager agreed to this, as the request came from higher up.
Current situation: The company now wants to release a recruiting video - produced, shot and edited by me with help of the marketing team. From multiple colleagues I now have heard, that my video work is really good and I should charge the company for this as I would when freelancing - or at least get some sort of bonus.
I really like the opportunity of exercising my "hobby" during worktime for my employer whilst getting paid for it (normal salary + expenses), but also like the idea of earning some extra money, since I'm saving the company the costs of hiring a film production company.
How and who would I best approach with this?