As described in https://github.com/shaka-project/shaka-player/issues/5782
If we don't add the CLOSED-CAPTIONS to none in the m3u8s, whenever we turn on a UI for choosing subtitles (that we add later on through add text track), apple thinks there is an "Undetermined" subtitle track because the M3U8 does not have the CLOSED-CAPTIONS set to none.
Shall we implement this as a default in GPAC?
Not setting CLOSED-CAPTIONS to none brings problems with subtitles in Apple HLS
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Not setting CLOSED-CAPTIONS to none brings problems with subtitles in Apple HLS
Issue date:

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As described in https://github.com/shaka-project/shaka-player/issues/5782
If we don't add the CLOSED-CAPTIONS to none in the m3u8s, whenever we turn on a UI for choosing subtitles (that we add later on through add text track), apple thinks there is an "Undetermined" subtitle track because the M3U8 does not have the CLOSED-CAPTIONS set to none.
Shall we implement this as a default in GPAC?
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