Do you have a Rebroadcast Delay?

[SteveErl]

The TvMaze metadata grabber has a lookup-by-timestamp option. This is helpful when trying to find metadata when no Subtitle is available. Generally, Manual Record rules and record rules originating from scheduling information broadcast over-the-air (EIT), have no Subtitle specified. I'm adding code to detect this situation and to try a lookup-by-timestamp to get specific metadata information such as Subtitle, Season, Episode, and Description. When handling the start-of-recording timestamp, adjustments to that time have to be made to compensate for differences in timezone. In addition, some regions in some countries have Rebroadcast Delays.

From wikipedia : Broadcast_delay

"In countries that span multiple time zones and have influential domestic eastern regions, such as Australia, Canada, Mexico and the United States, television networks usually delay the entirety of their schedule for stations in the west, so prime time programming can be time shifted to air in local primetime hours to improve accessibility and viewership."

I'm working on an update to the tvmaze metadata lookup script to add support for an optional Rebroadcast Delay when doing a lookup-by-timestamp. For example, for a TV show which plays at the beginning of prime time, here are the expected show times in the major US timezones:

Code: Select all

        #                      UTC    Rebroadcast Local-Airing-Time Prime
        #  Timezone            offset Delay (min) Live  Rebroadcast Time
        #  ------------------- ---    ----------- ----- ----------- -----
        #  America/New_York    -5     none        20:00             8pm
        #  America/Chicago     -6     none        19:00             7pm
        #  America/Denver      -7     60          18:00   19:00     7pm
        #  America/Los_Angeles -8     180         17:00   20:00     8pm
        #  America/Anchorage   -9     180         16:00   19:00     7pm
        #  Pacific/Honolulu    -10    240         15:00   19:00     7pm

In regions which use Rebroadcast Delay, there are both Live shows (such as sporting events) which are not delayed and standard programs which are delayed. The metadata lookup script will try to find a match with both options. My intent is to add a configuration value to let the user optionally specify a Rebroadcast Delay in minutes. A reviewer for my code isn't convinced that a single value is sufficient. Do we need a value per input source? Do we need a value per channel?

If you live in a country with multiple timezones, and your region uses a Rebroadcast Delay, is that delay period consistent across input sources (over-the-air, cable TV, satellite)? Is it consistent across all the channels?

Thanks for any clarification you can provide.

- Steve

[dnalorernst]

There is a discussion on the mailing list as well, see
http://lists.mythtv.org/pipermail/mytht ... 11267.html
or
https://lists.archive.carbon60.com/mythtv/users/643292

Is there any experience from Australia here ?
Please post you knowledge and observations.