Time shift viewing
At the start of the 2010 ratings year, OzTAM introduced its Time Shift Viewing service in response to the increasing presence of personal video recorders (PVRs) in Australian households.
At that point, it was the most significant change to Australian television audience measurement since people meters were introduced in 1991.
OzTAM's Time Shift Viewing service captures viewing of television broadcast programming played back at normal speed through the TV set within 28 days of the original broadcast.
This can include pausing a program as it is broadcast live and then continuing to watch it in playback mode (‘As Live’) on the same research day (i.e., before 2am), or playing back a program on another day through the TV set within 7/28 days of the original broadcast (‘Time Shift to 7’ and 'Time Shift to 28).
To capture Time Shift Viewing, OzTAM and its research service provider Nielsen TAM have deployed a sophisticated metering system that uses state-of-the-art content matching technologies to measure all viewing to all television channels to all TV sets in OzTAM Metropolitan panel homes.
Reference centres across Australia store all the broadcast content for every channel in their respective area for 28 days after broadcast. They identify whether the programming viewed on TV sets in panel homes matches content that was broadcast earlier in that 28-day period. Content matching means the meter looks for the same programs, promotions and advertisements.
Refer to OzTAM’s Data Availability Calendar for more information.
Please note OzTAM uses a different methodology to capture viewing of internet-delivered TV content ('BVOD'). Please see the Video Player Measurement section for details.
OzTAM's TAM TV ratings service and its BVOD measurement service are key components of Australia's new integrated all-screen, cross-platform Total TV database, Virtual Australia (VOZ).
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