When you're dealing with average customers who expect to be able to use the guide to set series/season passes and other advanced options like record by actor, director, team or sport, yes having nothing is better than presenting them with guide data that won't work with any of the usual DVR functions. As we've seen with this thread, the CSRs already have a hard enough time troubleshooting issues with the locals they do carry as they can't see it first hand unless they also happen to reside in the DMA, so it will be impossible for them to troubleshoot/explain PSIP quality issues that vary from station to station.
The PSIP EIT/ETT data is very barebones. The fields only provide a title, description, airtime, length and parental rating. There are no seperate fields for things like airdates, episode titles, cast/crew, season/episode numbers, new/rerun/live, etc.
Cable and sat DVRs use 3rd party listings services that provide a lot more metadata than just the information you see on screen and what PSIP data can deliver. When you set a recording it does not keep track of it by program and episode/event title, it uses the ids supplied by their listings provider. i.e. For Gracenote, TBS's game 7 telecast had EP041048336933, which is how DVRs knew it was different from any other "Arizona Diamondbacks at Philadelphia Phillies" MLB telecast it might have already recorded during the season, and every English language replay of the game will also have that id in Gracenote's data, no matter what channel it airs on. If it just relied on program/event titles alone, it would have thought it already recorded the game and skipped it like it does for the replays. The other guide data providers like Rovi/TiVo and Red Bee/FYI also have their own set of unique Ids that they assign to all content.
The PSIP EIT/ETT data is very barebones. The fields only provide a title, description, airtime, length and parental rating. There are no seperate fields for things like airdates, episode titles, cast/crew, season/episode numbers, new/rerun/live, etc.
Cable and sat DVRs use 3rd party listings services that provide a lot more metadata than just the information you see on screen and what PSIP data can deliver. When you set a recording it does not keep track of it by program and episode/event title, it uses the ids supplied by their listings provider. i.e. For Gracenote, TBS's game 7 telecast had EP041048336933, which is how DVRs knew it was different from any other "Arizona Diamondbacks at Philadelphia Phillies" MLB telecast it might have already recorded during the season, and every English language replay of the game will also have that id in Gracenote's data, no matter what channel it airs on. If it just relied on program/event titles alone, it would have thought it already recorded the game and skipped it like it does for the replays. The other guide data providers like Rovi/TiVo and Red Bee/FYI also have their own set of unique Ids that they assign to all content.
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