UPDATE:
This addon is now a part of Enhance-O-Tron for Plex! Get it here:
https://chrome.google.com/webstore/detail/enhance-o-tron-for-plex/fhbelblobiabomlogejpabonapkencph
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Do you have widescreen films encoded in their original cinema (21:9 / 2.35:1) aspect ratio that don't zoom full screen in Plex? Now you can just click the 21:9 button in the bottom toolbar to view your ultrawide films in their full glory!
Details:
Most feature films are shot in the ultrawide (21:9 / 2.35:1) format but since most televisions are 16:9, HD Blu Rays are encoded in 16:9 with black bars on the top and bottom. This allows the film to retain the original aspect ratio when filling a regular screen. But if you have an ultrawide screen, the black bars are not necessary and prevent the film from filling all the available space on your screen. Many digital players have a setting to zoom to 21:9 to crop the black bars out, but this was missing in Plex.
Note that when film is distributed digitally sometimes the black bars are removed in the re-encoding. In these cases the film will fill the screen properly. This extension is only needed in those cases where your source content is encoded in the original Blu Ray spec of 16:9 with the black bars. So if you see black bars when Plex is in full screen, just hit the 21:9 button and get the popcorn...
*Plex, the Plex Play logo and Plex Media Server are trademarks of Plex and used under a license.
Technical FAQ:
This extension is designed to work on app.plex.tv or localhost. If you are accessing your Plex Media Server through a different URL, see the GitHub page for more info.
Extore is a team of professionals who are passionate about creating extensions for web browsers. This devotion also gives us opportunity to appreciate work of other people. We get inspired by useful, open source extensions made by developers all over the world. Our strong belief is that one should share helpful add-ons with others. That’s why we’d like to present you our ever-growing list of favourite extensions that have inspired us. Moreover, as you probably have already learned, sometimes struggling for the best brings an end to the good. Talking about add-ons it often turns out that an upgrade is worse then previous version. Also it can become really tricky to get back to the beloved version of your favourite extension. That’s why we’re going to make not only the latest, but all versions of our favourite (and we hope yours too) add-ons available for download. No more compromises, just stick to the version you really like!