9. A method, comprising: receiving, by a television receiver, video content using an inactive tuner of the television receiver; obtaining, by the television receiver, text data corresponding to an audio portion of the video content; evaluating, by the television receiver, the text data to identify frequencies of words appearing in the text data; receiving, by the television receiver, input corresponding to determination of one or more user-designated keywords; storing the one or more user-designated keywords to a word list, wherein the word list includes at least a first keyword; determining, by the television receiver, that the first keyword appears in the text data with a first frequency greater than a first threshold frequency; and generating, by the television receiver, a first interface for display on a display device in real-time upon determining that the first frequency is greater than the first threshold frequency, wherein the first interface includes a notification identifying a match of the first keyword.
9. A method, comprising: receiving, by a television receiver, video content using an inactive tuner of the television receiver; obtaining, by the television receiver, text data corresponding to an audio portion of the video content; evaluating, by the television receiver, the text data to identify frequencies of words appearing in the text data; receiving, by the television receiver, input corresponding to determination of one or more user-designated keywords; storing the one or more user-designated keywords to a word list, wherein the word list includes at least a first keyword; determining, by the television receiver, that the first keyword appears in the text data with a first frequency greater than a first threshold frequency; and generating, by the television receiver, a first interface for display on a display device in real-time upon determining that the first frequency is greater than the first threshold frequency, wherein the first interface includes a notification identifying a match of the first keyword. 10. The method of claim 9 , wherein the television receiver includes a plurality of tuners, and wherein the inactive tuner corresponds to one of the plurality of tuners that is not being actively used to display live video content on the display device or that is not being actively used to record video content according to a recording schedule or timer.