Player often selects descriptive audio track as default

[dloftus]

Environment

• The MPD passes the DASH-IF Conformance Tool on https://conformance.dashif.org/
• The stream has correct Access-Control-Allow-Origin headers (CORS)
• There are no network errors such as 404s in the browser console when trying to play the stream
• The issue observed is not mentioned on https://github.com/Dash-Industry-Forum/dash.js/wiki/FAQ
• The issue occurs in the latest reference client on http://reference.dashif.org/dash.js/ and not just on my page

• Link to playable MPD file: pending - please contact @dsparacio for sample .mpd
• Dash.js version: 4.4.0
• Browser name/version: Chrome 102
• OS name/version: Mac OS 11.6.7

Steps to reproduce

1. Please provide clear steps to reproduce your problem

Use a multi-audio track .mpd with both a standard and descriptive language audio track. (sample pending)
Establish initial media settings after player is initialized:

// here, role is set to empty string in rough attempt to 
// coerce selection of non-descriptive lang track

player.setInitialMediaSettingsFor('audio', {
	lang: new RegExp(lang, 'i') as any,
	role: '',
});

// sample roles values

// track 1. - standard
roles: []

// track 2
roles: ['description']

3. If the bug is intermittent, give a rough frequency if possible
   In 3 of 4 tests with different resources, the descriptive audio track was chosen as a default. If a given resource does show this behavior, it happens 100% of the time.

Observed behavior

The descriptive audio track is chosen as a default, and it's unclear how to coerce selection of standard audio via setInitialMediaSettingsFor()

[dsilhavy]

Possibly related to #3961 .

@dsparacio : Can you provide a sample MPD for this?
@wschidol : Is this something that you deal with in #3961 ?

[wschidol]

This is related to #3961. #3961 will provide a mechanism to select an audio track with matching language and accessibility properties.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. However, it might still be relevant so please leave a short comment if it should remain open. Otherwise the issue will be closed automatically after two weeks. Thank you for your contributions.

[dsilhavy]

Fixed in #3961