Overview: Subtitle processing in Emby

Subtitle processing in Emby connects track compatibility with direct delivery, rendering and optional video composition.

The subtitle can remain a separate representation for the app to render, or it can become part of the video picture through an overlay operation. The available path depends on the subtitle, player and processing support.

Delivery and compatibility topics establish that decision. Filter and pipeline topics then explain how composition is performed and how it connects to decoding and encoding.

• Subtitle delivery in Emby
  Emby's subtitle delivery route connects the selected source track to an app-supported representation or a rendered video output.

• Subtitle rendering compatibility in Emby
  Subtitle compatibility in Emby includes source recognition, delivery, presentation features and resources at the selected app/server rendering stage.

• Subtitle overlay filters
  Subtitle overlay filters render or composite timed content onto video pictures through supported software or device interfaces.

• Subtitle overlay pipelines
  Subtitle overlay pipelines connect decoding, subtitle composition and output encoding through a particular sequence of stages.