[FFmpeg-user] What is a sponsor?

[Nomis101]

In ticket 3595, I've learned, that a missing sponsor can hinder bringing in patches to FFmpeg [1]. But I still quite don't understand what a sponsor actually is. Because I don't want to spam the
ticket with my non-developer question, I thought it might be better to ask in the mailinglist. What makes a sponsor so important to fix a ticket? How to find a sponsor for a ticket? And, what people
can become a sponsor? Thanks.

[1] https://trac.ffmpeg.org/ticket/3595#comment:15