HLS Subtitles are not rendered within provided timestamps specified in VTT file.

[matejpolak]

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

What link can we use to reproduce this?
https://shaka-player-demo.appspot.com/demo/#audiolang=cs-CZ;textlang=cs-CZ;uilang=cs-CZ;asset=https://storage.googleapis.com/shaka-demo-assets/angel-one-hls/hls.m3u8;panel=ALL_CONTENT;panelData=drm:CLEAR,HLS,SUBTITLES;build=uncompiled

What version of Shaka Player are you using?
v3.0.1-uncompiled

What browser and OS are you using?
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.106 Safari/537.36

What did you do?
Simply play provided content and set subtitle track for English for example.

What did you expect to happen?
Subtitles being rendered on time.

What actually happened?
I'm observing wrong subtitles rendering in both Shaka Demo page and my own app using Shaka.

Subtitles are not rendered on time -> They don't respect timestamps provided in .vtt file.

Doesn't work in:

• Chrome
• Firefox
• Edge

Works in:

• Safari

Chrome

Safari