LOS ANGELES — The movie industry is whooshing toward its digital future, but some players are worried about getting stuck in an informational void along the way.

The business has long used box-office numbers, which are publicly sliced and diced ad infinitum. Similarly, disc sales and rentals for years have been monitored by the Rentrak data company and others.

But as consumers shift to new channels like Netflix and Amazon, there are no generally available industrywide data on the digital performance of individual movies.

While the studios get some information, it isn’t widely shared with filmmakers, agencies or the public — and those who hold the data have a distinct advantage when it comes to making deals or deciding which movies to back, or what to spend on them.