Question 1

What can I do with RelaySub?

Accepted Answer

Search subtitles for films and series, download available releases, translate and edit subtitle files, create subtitles from media, request a missing language, and connect supported apps through RelaySub Connect, the API or MCP.

Question 2

Where do the subtitle results come from?

Accepted Answer

RelaySub searches its own community catalog and configured providers such as SubDL and SubSource. Every result keeps its source label, and RelaySub ranks and deduplicates the combined results.

Question 3

Can I search by season and episode?

Accepted Answer

Yes. Series pages let you choose a season and episode before searching, so results can be matched to the part of the story you are watching.

Question 4

What if the subtitle I need does not exist?

Accepted Answer

You can request it from the RelaySub community, translate an existing subtitle, upload your own work, or create timed captions from a video or audio file when transcription is available.

Question 5

Which languages and subtitle formats are supported?

Accepted Answer

RelaySub offers more than 100 language choices. The editor accepts common subtitle formats including SRT, WebVTT and ASS/SSA while preserving timing for export.

Question 6

Can I use RelaySub with Plex, Jellyfin, Sonarr or Radarr?

Accepted Answer

Plex connection is available now for importing your library and watched state. Jellyfin, Sonarr and Radarr are planned integrations. Developers can use scoped API keys or the RelaySub MCP server.

Question 7

How does RelaySub handle external downloads?

Accepted Answer

Provider credentials stay on the server. RelaySub validates each result and either uses an approved provider link or a short-lived, bounded download route according to that provider’s policy.