When doing business research, it is useful to obtain the NAICS codes and SIC codes. The links below will help you find the codes for specific types of industries. Although there isn't an exact NAICS or SIC code for video-on-demand, there are some codes that relate to it, such as the following:
NAICS 515210 Cable and Other Subscription Programming
SIC 4841 Cable and Other Pay TV Services
NAICS 532230 Video Tape and Disc Rental
SIC 7841 Video tape rental
Another way to identify the codes is to search for the Company name in Mergent Intellect, and then look at the Industry section. For instance, the NAICS code for Netflix is 532230 (Video tape and disc rental).
It is important to know these codes in order to retrieve statistical information produced by the Census. You can also use these codes to search in some databases.
One source you can use to apply NAICS codes is the Business Patterns database from the U.S. Census Bureau. This can help you determine what has been the trend in a particular industry from a National, County, Metro, and Zip Code perspective. Please note, however, that this will probably not include those establishments that are purely web-based. You can also use NAICS and SIC codes to find Industry reports from First Research.