PiP captions do not appear on dr.dk
Categories
(Toolkit :: Picture-in-Picture, enhancement, P3)
Tracking
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| Tracking | Status | |
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| firefox139 | --- | affected |
People
(Reporter: bugzilla, Unassigned)
References
(Blocks 1 open bug)
Details
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0
Steps to reproduce:
- Open https://www.dr.dk/drtv/ (you might need to be logged in)
- Open the video in PiP
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Reporter | |
Comment 1•26 days ago
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I've investigated this issue and confirmed that DRTV uses Video.js to display subtitles.
The player renders Danish subtitles inside .vjs-text-track-display, with individual cues using .vjs-text-track-cue.
The video element exposes no native text tracks (video.textTracks.length === 0).
I implemented a JavaScript proof of concept using MutationObserver to read the subtitle elements and mirror their text into a native TextTrack with video.addTextTrack() and VTTCue.
This works: Danish subtitles are now displayed correctly in Firefox Picture-in-Picture.
Firefox already has a site-specific Video.js wrapper (videojsWrapper.js). I propose testing whether registering www.dr.dk in picture_in_picture_overrides.js using this existing wrapper resolves the issue without additional changes.
I'd like to contribute the patch for this bug.
Description
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