IMSC1 subtitles not working in a HLS stream

[duggaraju]

Have you read the FAQ and checked for duplicate open issues?

What version of Shaka Player are you using? 4.1.1

Can you reproduce the issue with our latest release version? yes

Can you reproduce the issue with the latest code from main? yes

Are you using the demo app or your own custom app? both

If custom app, can you reproduce the issue using our demo app? yes

What browser and OS are you using? Windows 11, Microsoft edge/chrome

For embedded devices (smart TVs, etc.), what model and firmware version are you using?

What are the manifest and license server URIs?

https://aka.ms/LowLatencyDemo.m3u8

What configuration are you using? What is the output of player.getConfiguration()?

{ streaming: { autoLowLatencyMode: true } } setTextTracksVisible(true) or select it from the UI.

What did you do?

Just play the stream

What did you expect to happen? the captions should be downloaded and visible.

What actually happened?

The fragments of the captions are not getting downloaded and not displayed.

[joeyparrish]

The log is full of warnings like (text:8) cannot find segment lookupTime: 3664.425235271454 presentationTime: 3666.425235271454.

[ningl2]

Is there an update on this issue. We have a test stream if needed. Thanks.