This release exposes a ton of settings previously buried in the config file. Additionally it contains many other improvements.
Please log out and log back into your Jellyfin server after updating.

Changes:

• Add settings menu for built-in player settings.
  • Hardware video acceleration can be enabled.
  • Subtitle position, color, and scaling options. (Support varies by subtitle type.)
  • Fullscreen keeps the player fullscreen at all times.
  • The screen the player opens on can be set.
  • Setting the display refresh rate to content. (Requires Fullscreen)
  • Changing audio devices, including enabling codec passthrough. (Not Tested)
  • Deinterlacing can be enabled. (Not Tested)
• Add hardware acceleration in the web view. (disable with --disable-gpu)
• Properly advertise player name, version, and computer name.
  • This has the side effect of sadly breaking all existing sessions.
  • If you do not log out and back in, remote control, SyncPlay, and UI updates break.
• Make subtitle position and scale settings work with SSA and bitmap subtitles.
• Switch to NativeShell interface for jellyfin-web extensions.
• Fix video download option to open links in browser.
• Fix up next dialog hiding the player UI.
• Add support for remote devtools.
• Fix F11 key for fullscreen.
• Upgrade webclient to jellyfin-web 10.7.1.