https://trakt.tv/shows/phineas-and-ferb

I just checked Phineas & Ferb on Trakt and the episode runtimes are wrong. The vast majority of the episodes are 11 minutes and this is listed as runtime for the series.
However, a lot of episodes are listed as 22 minutes when this should be 11 minutes. This makes the total runtime of the series inaccurate.
I checked TVDB (https://www.thetvdb.com/series/phineas-and-ferb) and all episodes there have the correct runtime (I checked Disney+ to verify the episode runtimes, even though Disney+ has a different episode order.) Some episode are longer than 11 minutes but TVDB has the correct runtimes for these episodes.

Also, S04E49 (https://trakt.tv/shows/phineas-and-ferb/seasons/4/episodes/49) should be removed as the episode is a special and not part of S04. On TVDB and TMDB, this episode is not listed as part of S04.

Could this be fixed?

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.

Please consider removing the feature that plants the left sidebar in place until you completely scroll down to the bottom section containing the comments. Sometimes I want to click the link to check out further comments on IMDB on a movie and it is annoying to have to scroll all the way to the bottom of the screen in order to have the IMDB button appear. And sometimes the movie logo is glitchy and it continues to appear even at the very bottom in which case you need to modulate the scroll up a bit and down a bit in order to get the quick link buttons to appear. Love that you have the quick link buttons to IMDB and other sites, just wish that they were more easily accessible. Personally would remove the freeze feature holding the movie logo & picture to the left sidebar. If I clicked on the movie to find out more information, I obviously know what movie I am in and don't need to have the name and picture frozen to the left sidebar.

I’ve noticed that many episodes of many shows duration is very inaccurate. For example, the latest season of Curb Your Enthusiasm, the episodes runtime are 37-45 Mins. But Trakt.tv has all the episodes rounded down to 30mins. I’ve also noticed that in other shows, many episodes are rounded up. With such flawed data points, This creates an inaccurate total of watch content for that day. Personally I am someone who likes to track how much content I’ve watched in total for a given day.
If I’m missing 35mins from one daily total, that would create an even greater inaccuracy in the Year in Review total.

[Update] On further investigation it would appear that TVDB on the web has the same issue with inaccurate runtimes.
Perhaps you could include an option in episode pages for VIP subscribers to report and offer runtime corrections for those episodes.