Trakt switched from thetvdb to themoviedb as a source. I completely understand why. But now there are a lot of not 100% matching shows.

I'm trying my best to help update shows on themoviedb, so trakt has a reliable data source. But it would be nice if I can perform a data refresh in trakt to see if I updated the shows correctly, and there is a 100% match wit tmdb. I can't perform a data refresh myself, because I have no VIP account. I considered paying for a VIP account for a month, but that doesn't seem to be possible. I don't want to pay for a year, because I don't need VIP options, I just want to sync data. And it feels stupid for me to pay trakt, to be able to improve the trakt data. Please consider giving people a temporary access to the refresh data option, so we can improve your data source.

After the transition to TMDB Gintama (https://trakt.tv/shows/gintama) has extra episodes. Season 10 only has 12 episodes. Episodes 13 through 26 are actually season 11. Is it possible to remove the extra episodes and move views / collections to season 11? I also recommend removing extra episodes from specials (movie in specials on TVDB).

For the Bleach show (https://trakt.tv/shows/bleach) on TVDB the division is in several episodes while on TMDB there is only one season with the 366. Is it possible to make the transition to TMDB ( with moves of views and collections to "season 1") and remove excess episodes? Plus, modify the specials to match TMDB (6 instead of 7).

For Yu-Gi-Oh (https://trakt.tv/shows/yu-gi-oh-duel-monsters) it is the same problem for Bleach (multi season on TVDB and only one side on TMDB). Is it possible to make the changes only for Bleach? As well as removing the specials which are not really relevant from what I have noticed.

Thanks for taking care of my long request.

I do not know if other shows are undergoing these modifications (multiples seasons to One season) but do not hesitate to add them following my request!

I have been updating a few dutch shows from TVDB to TMDB but I dont see the changes on the comparison page. Here is a list of all the shows that are ready to be changed to TMDB data:

Bram In De Buurt
https://www.themoviedb.org/tv/118257-bram-in-de-buurt?language=nl-NL

All stars: de serie
https://www.themoviedb.org/tv/54209-all-stars?language=nl-NL

Mocro Maffia: Komtgoed (runtime changed to the right one)
https://trakt.tv/shows/mocro-maffia-komtgoed

Proefkonijnen
https://www.themoviedb.org/tv/55337-proefkonijnen?language=nl-NL

Zondag met Lubach
https://www.themoviedb.org/tv/64758-zondag-met-lubach

Tomtesteron
https://www.themoviedb.org/tv/36464-tomtesterom?language=nl-NL

Romulus (changed name of episode 1x04)
https://www.themoviedb.org/tv/93782-romulus?language=en-US

De Slimste mens
https://www.themoviedb.org/tv/61780-de-slimste-mens?language=en-US

Floris
https://www.themoviedb.org/tv/1560-floris?language=en-US

Sluipschutters
https://www.themoviedb.org/tv/122664-sluipschutters

The Sidemen Show (tmdb has original video titles)
https://www.themoviedb.org/tv/89928-the-sidemen-show/season/1?language=en-US

Dumpertreeten
https://www.themoviedb.org/tv/95759-dumpertreeten?language=nl-NL

All or Nothing: Manchester City (air date from 16 to 17 august)
https://www.themoviedb.org/tv/81705-all-or-nothing-manchester-city?language=en-US

All stars & zonen
https://www.themoviedb.org/tv/110689-all-stars-zonen?language=nl-NL

Idris Elba: Fighter
https://www.themoviedb.org/tv/89173-idris-elba-fighter?language=en-En

The last journey of the vikings
https://www.themoviedb.org/tv/101662-vikingernes-sidste-rejse

Top 2000 a gogo (info from tvdb)
https://www.themoviedb.org/tv/122656-top-2000-a-gogo

Vakkenvullers
https://www.themoviedb.org/tv/111706-vakkenvullers?language=nl-NL

Also Mocro Maffia is complete on TMDB because the extra specials in TVDB are a separate series [mocro maffia: komtgoed] so this can also be transferred over.
https://trakt.tv/shows/mocro-maffia

thanks in advance!

Currently, the average rating for a show seems to be a simple average of all the ratings, so it doesn't take into account how many episodes each user has watched. A more accurate depiction would be to weigh the average based on how many of the available episodes each user has watched.

Let's take a simple example: users A and B watch the first 10-episode season of a show the year it first airs. User A rates it an 8 and user B rates it a 9. After the first season of the show, the displayed average is 85%, which is correct.

A year later, the show releases a second 10-episode season. User A is super busy watching other shows, so he delays watching season 2. In the meantime, user B watches it and finds it to be terrible, so he reduces his rating of the show to a 5. The average then corrects to 65%. However, one could argue user B has a complete overview of the show in its current state, whereas user A has only watched half, so his rating should not have as much of an impact on the average. This can be achieved by using a weighted average:

(ratingA * weightA + ratingB * weightB + ... + ratingN * weightN) / (weightA + weightB + ... + weightN)

where:

• ratingN is the rating of user N


• weightN is the number of episodes user a has watched divided by the total number of available episodes for the show or season (watchedEpisodesN / totalAvailableEpisodes)

So in our little example we have the following inputs:

• totalAvailableEpisodes = 20


• ratingA = 8


• totalEpisodesA = 10


• ratingB = 5


• totalEpisodesB = 20

Meaning:

• weightA = 10 / 20 = 0.5


• weightB = 20 / 20 = 1

Leading to the following weighted average:

(8 * 0.5 + 5 * 1) / (0.5 + 1) = 60%

If you introduce a third user that watches both seasons and also rates it a 5, the weighted average method yields an average of 56%, compared to 60% for the old method.

This solves the problem of ratings for ongoing shows and people who rate shows before they fully finished them. Some would argue people should not rate shows or seasons before they finished them, but at least for shows it makes sense to do so; you would not want to wait for a show to have ended before it can have ratings, otherwise users would not be able to decide whether to pick up an ongoing show. Depending on the details of the implementation, it could probably also alleviate the issue of people rating shows/seasons before release.