Independent filmmakers who used the aggregator Distribber to get their movies on iTunes and Amazon say they’re owed thousands in royalties as the service faces financial collapse. This week, Distribber’s parent company, GoDigital Inc., sent letters informing clients that the company has opted to liquidate as an alternative to bankruptcy — a process that’s supposed to divvy up the firm’s assets to pay royalty and other debts. Now, an attorney representing one of these filmmakers is calling for a criminal investigation.

Aggregators like Distribber receive filmmakers’ work and, for a fee, will encode and post it on multiple platforms for streaming, rental, or purchase, then collect the revenue and cut checks to filmmakers. Six filmmakers interviewed by IndieWire said they’ve been waiting for as long as a year to receive royalties they’re owed.

Currently, an “assignee” company is handling GoDigital’s affairs during the process...