The TMDB scraper in Kodi retrieves the very first line (earliest release in the user-specified country) for a movie, and grabs the certification from that line. The "Premiere" line seems to often have no certification entry, thus leading to incorrect information. Perhaps the scraper should grab the "Theatrical" or "Theatrical (limited)" release line, but that opens up another can of worms for the scraper programmers.
Regardless, "Premiere" showings almost always have ratings attached to them, since the content is usually identical to that in the "Theatrical" release. So, the "Premiere" releases should have certifications in the data here.
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Reply by nabsltd
on August 16, 2018 at 5:15 PM
OK. so where is the "NR" "Physical" release for Deadpool 2? Or any of the hundreds of other movies that have "Physical" releases listed but that release either was unrated or contained an unrated version?
The point being is that having different ratings for different releases because they are different versions of the movie but then giving different ratings for different releases that are obviously the same version of the movie is bad data. It's also a backdoor where people are currently adding "extended" or other editions that are going to have to be dealt with if TMDb ever starts supporting different versions of the same movie.
I've fixed movies that are obviously broken (no rating on the single listed "Theatrical" release of modern movies) from the ones I have in my library. Other than that, though, if you guys don't care about truly accurate data, then neither do I, and I don't need to fix any more errors I find.
Reply by lineker
on August 16, 2018 at 5:36 PM
I don't understand what the problem is. If you can prove that a one-off gala premiere screening close to the official release date is a rated screening, then please go ahead and add such a date with the rating. Otherwise you don't. It's not that difficult.
I'd say that 99.9% of all premiere release dates on TMDb are festival screenings, which probably is why we are not on the same page here. You seem to be thinking mostly about the not very common gala premieres. Adding incorrect ratings to festival release dates are not going to improve data quality on TMDb. And I still think the original problem you wrote about is a problem that should be resolved outside of TMDb.
Reply by nabsltd
on August 16, 2018 at 7:57 PM
That's really not even close to accurate, since pretty much every mainstream movie released gets a "gala" premiere.
Except that unless somebody was there personally and stayed through to the very end of the credits, and took a picture of the MPAA certificate seal, there is no way to "prove" it. But, if any print ad or movie trailer was released before the premiere date and any of them had an MPAA rating listed, then there is no doubt that the "gala" premiere showed that version, as there would be no other version available at that point in time.
Reply by lineker
on August 16, 2018 at 8:24 PM
We are not going to get anywhere here. I'm signing off this topic and if others want to bump heads with you, be my guest. I think it's all pretty clear in this topic where we stand. You want to fix a problem that should be fixed outside of TMDb with adding unconfirmed data. It's very possibly that that becomes the solution at some point, but if so it's still only going to be true for some very mainstream releases (those that go directly to theatrical without a festival premiere). So you are still going to have a problem with most releases and that's why your solution is not going to solve the original scraper problem.
With your thinking you would probably want us to add the US ratings for a Venice or Toronto festival premiere since it must be the version with the seal based on your logic. Since it's "the seal" that determines everything. Anyhow, over and out.