In video.js, when the source content type is "audio/mp3", the subtitle of the track is not updated.

[iranika]

Description

I am trying to add subtitles to audio.
In video.js, when the source content type is "audio/mp3", the subtitle of the track is not updated.

We have prepared a Demo page.

Demo page.
https://iranika.github.io/videojs-debug/

Souce Code.
https://github.com/iranika/videojs-debug

What is interesting is that when you change the caption or operate the fullscrean, the subtitle will be displayed.
However, the subtitle is not updated.
In Chrome. ( Firefox is not occurred.)
It's not detecting the cuechange Event, i think well...

Is this a bug?

Reduced test case

https://github.com/iranika/videojs-debug

Steps to reproduce

Demo page.
https://iranika.github.io/videojs-debug/

Souce Code.
https://github.com/iranika/videojs-debug

Errors

No response

What version of Video.js are you using?

latest 7.10.2

Video.js plugins used.

No response

What browser(s) including version(s) does this occur with?

Chrome 105.0.5195.53

What OS(es) and version(s) does this occur with?

Windows11

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[locpd]

After updating from 7.9.7 to 7.20.2, I also experience this problem of subtitle not updating on Samsung TV (Tizen OS). When I switched subtitle for a video with multiple subtitles, the current cue would show (if there was an active one) and it just stayed there forever, switching to another subtitle and the same thing happened. I think it has something to do with the 'cuechange' event.

My content is H264 video with AAC LC 6 channel audio, so I don't think the content type matters.

[mister-ben]

It's to do with using requestVideoFrameCallback and requestAnaimationFrame for more precise and reliable cues than can be achieved timeupdate. Although we don't use requestVideoFrameCallback with audio elements, an audio-only source in a video element as in the example won't trigger any frame updates.

The video on Samsung doesn't really make sense, but TVs do do strange things. I think we'll just have to use timeupdate for cues as well to cover all the edge cases.

[iranika]

Problem solved :)
Good job, and thanks!

[locpd]

I can confirm subtitle now works again on Samsung TV, and Sony TV too.

[yassinox1234]

Hello
Does anyone have a good iptv player app for samsung tv that can play subtitles too, all apps i've tried on my samsung don't play subtitles at all