The CEA subtitles can not be recognised with latest version (4.6.0)

[Wenjie-Shao]

Have you read the FAQ and checked for duplicate open issues?
Yes. It's not mentioned recently.

If the problem is related to FairPlay, have you read the tutorial?

No

What version of Shaka Player are you using?

It can be reproduced in both 4.3.4 and latest version (which is 4.6.0 currently)

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

Can you reproduce the issue with the latest code from main?
Not try

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?
Chrome and Chromecast

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

What are the manifest and license server URIs?
https://lnc-bloomberg-originals.tubi.video/tubi-bloomberg-quicktake-ZdKlqOiMOCbub2GE.m3u8

What configuration are you using? What is the output of player.getConfiguration()?
Just use default config

What did you do?
Just open demo page and play the content https://shaka-player-demo.appspot.com/demo/#audiolang=en-US;textlang=en-US;uilang=en-US;asset=https://lnc-bloomberg-originals.tubi.video/tubi-bloomberg-quicktake-ZdKlqOiMOCbub2GE.m3u8;panel=CUSTOM%20CONTENT;build=uncompiled

What did you expect to happen?
The subtitle could appear or the text tracks could be obtained by calling player.getTextTracks() or player.video_.textTracks

What actually happened?

player = video.ui.getControls().getLocalPlayer()
player.getTextTracks()
 > []
player.video_.textTracks
> TextTrackList {length: 0, onchange: null, onaddtrack: null, onremovetrack: null}

I also tried with the hls.js demo https://hlsjs.video-dev.org/demo/. The text tracks could be obtained from video element like this

[avelad]

Your master playlist:

#EXTM3U
#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS,GROUP-ID="cc",LANGUAGE="en",NAME="English",AUTOSELECT=YES,INSTREAM-ID="CC1"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="master_broadcast",LANGUAGE="eng",NAME="Master Audio",AUTOSELECT=YES,DEFAULT=YES
#EXT-X-STREAM-INF:BANDWIDTH=3158000,RESOLUTION=1280x720,CODECS="mp4a.40.2, avc1.640020",AUDIO="master_broadcast"
origin/contribution-m1-bloomberg-quicktake/3128k/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=958000,RESOLUTION=640x360,CODECS="mp4a.40.2, avc1.640016",AUDIO="master_broadcast"
origin/contribution-m1-bloomberg-quicktake/928k/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=558000,RESOLUTION=428x240,CODECS="mp4a.40.2, avc1.640015",AUDIO="master_broadcast"
origin/contribution-m1-bloomberg-quicktake/528k/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=2158000,RESOLUTION=960x540,CODECS="mp4a.40.2, avc1.64001f",AUDIO="master_broadcast"
origin/contribution-m1-bloomberg-quicktake/2128k/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=6158000,RESOLUTION=1920x1080,CODECS="mp4a.40.2, avc1.640028",AUDIO="master_broadcast"
origin/contribution-m1-bloomberg-quicktake/6128k/index.m3u8

The attribute CLOSED-CAPTIONS is missing in #EXT-X-STREAM-INF. We need this attribute in order to get the correct closed captions tag.

The right master playlist should be:

#EXTM3U
#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS,GROUP-ID="cc",LANGUAGE="en",NAME="English",AUTOSELECT=YES,INSTREAM-ID="CC1"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="master_broadcast",LANGUAGE="eng",NAME="Master Audio",AUTOSELECT=YES,DEFAULT=YES
#EXT-X-STREAM-INF:BANDWIDTH=3158000,RESOLUTION=1280x720,CODECS="mp4a.40.2, avc1.640020",AUDIO="master_broadcast",CLOSED-CAPTIONS="cc"
origin/contribution-m1-bloomberg-quicktake/3128k/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=958000,RESOLUTION=640x360,CODECS="mp4a.40.2, avc1.640016",AUDIO="master_broadcast",CLOSED-CAPTIONS="cc"
origin/contribution-m1-bloomberg-quicktake/928k/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=558000,RESOLUTION=428x240,CODECS="mp4a.40.2, avc1.640015",AUDIO="master_broadcast",CLOSED-CAPTIONS="cc"
origin/contribution-m1-bloomberg-quicktake/528k/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=2158000,RESOLUTION=960x540,CODECS="mp4a.40.2, avc1.64001f",AUDIO="master_broadcast",CLOSED-CAPTIONS="cc"
origin/contribution-m1-bloomberg-quicktake/2128k/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=6158000,RESOLUTION=1920x1080,CODECS="mp4a.40.2, avc1.640028",AUDIO="master_broadcast",CLOSED-CAPTIONS="cc"
origin/contribution-m1-bloomberg-quicktake/6128k/index.m3u8

Spec: https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis#section-4.4.6.2

CLOSED-CAPTIONS

      The value can be either a quoted-string or an enumerated-string
      with the value NONE.  If the value is a quoted-string, it MUST
      match the value of the GROUP-ID attribute of an EXT-X-MEDIA tag
      elsewhere in the Playlist whose TYPE attribute is CLOSED-CAPTIONS,
      and it indicates the set of closed-caption Renditions that can be
      used when playing the presentation.  See [Section 4.4.6.2.1](https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis#section-4.4.6.2.1).

      If the value is the enumerated-string value NONE, all EXT-X-
      STREAM-INF tags MUST have this attribute with a value of NONE,
      indicating that there are no closed captions in any Variant Stream
      in the Multivariant Playlist.  Having closed captions in one
      Variant Stream but not another can trigger playback
      inconsistencies.

[avelad]

hm... According to https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis#section-4.4.6.1

TYPE

      The value is an enumerated-string; valid strings are AUDIO, VIDEO,
      SUBTITLES, and CLOSED-CAPTIONS.  This attribute is REQUIRED.

      Typically, closed-caption [[CEA608](https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis#ref-CEA608)] media is carried in the video
      stream.  Therefore, an EXT-X-MEDIA tag with TYPE of CLOSED-
      CAPTIONS does not specify a Rendition; the closed-caption media is
      present in the Media Segments of every video Rendition.

[avelad]

The spec is a bit ambiguous, after talk with @theodab, we are going to support this case.

[Wenjie-Shao]

Thank you for your fast response! It would be a great help.

[siarheipashkevich]

@avelad @Wenjie-Shao how to HIDE this captions and subtitles from Shaka Player ???

My manifest file does not have any text tracks but in the player controls I have options to select subtitles, I've hided it using

textDisplayFactory: () => new StubTextDisplayer(),

but it's working only on Android, but on iOS I have this "damn" subtitles, how to hide them???

Please help me