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## subtitle_supports_external_delivery

# Function subtitle_supports_external_delivery

Source

    pub fn subtitle_supports_external_delivery(codec: Option<&str>) -> bool

Expand description

Whether a subtitle in this format can reach the app as a sidecar it draws itself — the same verdict as `subtitle_forces_burn_in`, from the reader’s side, and the one a subtitle picker needs.

Since the app asks for burn-in nowhere (see `playback_subtitle_stream_index`), a format that only burn-in could deliver is one it can never display. An unnamed format is treated as undeliverable rather than guessed at: offering a track and drawing nothing is worse than not offering it.

TRACES: UR-020 | DR-176 | UT-168