If track doesn't have a kind attribute, Able Player won't generate a transcript.

Author: joedolson

src/assets/js/media.js

@@ -7,21 +7,27 @@ if ( ableplayer.settings.replace_audio === 'true' ) {
 }
 if ( 0 !== ableplayer_selectors.length ) {
 	const mediaEls = document.querySelectorAll( ableplayer_selectors );
+	let childTracks;
 	if ( mediaEls ) {
 		mediaEls.forEach((el,index,listObj) => {
 			let excludeClass = ableplayer.settings.exclude_class;
 			if ( excludeClass !== '' && el.classList.contains( excludeClass ) || el.closest( 'figure' ).classList.contains( excludeClass ) ) {
 				el.classList.add( 'ableplayer-skipped' );
 			} else {
 				el.removeAttribute( 'controls' );
-
 				if ( ! el.hasAttribute( 'data-able-player' ) ) {
 					el.setAttribute( 'data-able-player', 'true' );
 				}
 				if ( ! el.hasAttribute( 'id' ) ) {
 					el.setAttribute( 'id', 'able-player-id-' + index );
 				}
 			}
+			childTracks = el.querySelectorAll( 'track' );
+			childTracks.forEach((track,index,listObj) => {
+				if ( ! track.hasAttribute( 'kind' ) ) {
+					track.setAttribute( 'kind', 'subtitles' );
+				}
+			});
 		});
 	}
 }