Methods and apparatus for metering computer-based media presentation

摘要

Methods and apparatus for metering (125) the presentation of computer-based media presentation are disclosed. An example disclosed method performed by a computer (105) that is configured to execute an operating system and a media presentation program (115) comprises modifying the media presentation program to re-direct a function call made to the operating system by the media presentation program, and processing the re-directed function call to determine media presentation information.