1. A method of identifying unknown video content, the method comprising: receiving a first fingerprint and a second fingerprint, the first fingerprint being a color-based fingerprint derived from colors in a portion of the unknown video content, the second fingerprint being at least partially based on a feature other than the colors of the unknown video content; querying a reference database of reference fingerprints using one of the first fingerprint or the second fingerprint to obtain a candidate group of fingerprints; querying the candidate group of fingerprints using the other of the first fingerprint and the second fingerprint to identify at least one query fingerprint; and identifying the unknown video content using the at least one query fingerprint.