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Question about WebVTT cue positioning on Android TV (line:20%) - Printable Version

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Question about WebVTT cue positioning on Android TV (line:20%) - Fernando Juárez - 2025-12-13

Hi everyone,

I wanted to ask about a subtitle behavior I’m seeing on Jellyfin Android TV, before opening a GitHub issue, to make sure I’m understanding it correctly.

I have WebVTT subtitles that use cue positioning like this:

00:01:23.000 --> 00:01:26.000 line:20%
Hello!

On Android TV, the subtitle sometimes renders with a visible tag at the beginning:

{\an8} Hello!

When inspecting the .vtt file as plain text, there are no ASS/SSA tags in the file.

I’m not yet sure whether this is expected behavior, a conversion artifact, or a parsing/rendering issue specific to the Android TV client.

Has anyone else noticed something similar with WebVTT positioning on Android TV, or knows if this is a known limitation?

If needed, I can provide a minimal sample file to test.

Thanks!