[BUG] When multiple captions exist, only first caption is showing up in the iOS native player

[elynema]

Description

When there are multiple caption files for a video, only the first caption option is showing up under subtitles in the native player. This is happening in iPhone and Chrome on iPad (Chrome uses the native player on iPad).

Example record with multiple caption files: https://avalon-dev.dlib.indiana.edu/media_objects/fj236208t

Private Zenhub Video

[elynema]

This also means that if the user selects a caption other than the first one that shows up in the native player, captions disappear once the native player is opened. This results in a weird state where one set of captions shows in the Ramp media player and another in the native player.

[elynema]

Prioritized to next release since very few items have multiple captions.

[Dananji]

Media object: Horses and Men (https://avalon-dev.dlib.indiana.edu/media_objects/000000000)

It has the following lines in its HLS manifest for captions;

#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",LANGUAGE="eng",NAME="clio-reel.vtt",DEFAULT=YES,AUTOSELECT=YES,URI="/master_files/9019s246n/caption_manifest/193"
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",LANGUAGE="eng",NAME="IANYN.vtt",DEFAULT=NO,AUTOSELECT=YES,URI="/master_files/9019s246n/caption_manifest/194"

Captions menu in Ramp	Captions menu in iOS native player

Media object: "No Time"/"Until We're Free" (https://avalon-dev.dlib.indiana.edu/media_objects/g158bh28p)
HLS manifest captions;

#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",LANGUAGE="eng",NAME="LABEL-sample-30.vtt",DEFAULT=YES,AUTOSELECT=YES,URI="/master_files/2f75r800t/caption_manifest/106"
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",LANGUAGE="eng",NAME="sample copy.vtt",DEFAULT=NO,AUTOSELECT=YES,URI="/master_files/2f75r800t/caption_manifest/135"

Captions menu in Ramp	Captions menu in iOS native player

It seems the native player picks up only the caption with DEFAULT=YES in the HLS manifest?

[joncameron]

Could be the Default issue, or something else; we'll know more after the completion of the current investigation ticket.

[elynema]

This needs to be re-tested; may be related to having captions in HLS manifest.

[elynema]

All captions that are shown in the web player are now showing in the native player.

@joncameron There is a bit of oddness in that no matter what caption you select in the web player, the native player just has the 'Auto' option selected. The correct subtitles display, but ti doesn't actually tell the user which set of subtitles are displaying. Is this enough of an issue that we should create another ticket?