SubtitleTrack.label polluted and leads mismatching with DASH manifest AdaptationSet#Label

Support
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1

First, here is my device and Web SDK information.

  • OS: MacOS Big Sur (11.5)
  • Browser:
    • Google Chrome (Version 119.0.6045.199 (Official Build) (arm64))
    • Safari 14.1.2（16611.3.10.1.6）
  • Bitmovin Player Web SDK: v8.84.0 (by npm)
  • Bitmovin Player UI: v3.37.0 (by npm)

Currently, when AdaptationSet#Label was presented in DASH manifest, the label value is not used when accessing SubtitleTrack.label. Here’s some example snippet.

<AdaptationSet lang="zh">
   <Label>
    中文
   </Label>
   <Representation bandwidth="256" id="caption_zh" mimeType="text/vtt">
    <BaseURL>dash_sub/foo.vtt</BaseURL>
   </Representation>
</AdaptationSet>

Current behavior when reading SubtitleTrack.label

player.subtitles.list()[0]

seems it got polluted with the same lang value：

{
  lang: 'zh',
  label: 'zh',
}

Expect behavior:

{
  lang: 'zh',
  label: '中文',
}

Any suggestion or version update for helping me get subtitle label same as set?

1 Like
2

Hi,
Using the DASH label is on our roadmap but not supported yet.
Bitmovin Feature reference : PW-10911
As an alternative, you could use player.getManifest() and parse the label.

Please let us know in case you have any questions.