basic support for subtitles in an HLS stream

flextv · May 2, 2018 · ce01d5a · ce01d5a
1 parent 737d348
commit ce01d5a
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/ios/RCTVideo.m b/ios/RCTVideo.m
@@ -396,6 +396,13 @@ - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(N
             orientation = @"portrait";
         }
 
+        // TODO make it configurable to select a preferred subtitle language and turn them on/off
+        AVMediaSelectionGroup *subtitleGroup = [_playerItem.asset mediaSelectionGroupForMediaCharacteristic:AVMediaCharacteristicLegible];
+        NSArray<AVMediaSelectionOption *> *subtitles = [AVMediaSelectionGroup mediaSelectionOptionsFromArray:[subtitleGroup options] filteredAndSortedAccordingToPreferredLanguages:[NSLocale preferredLanguages]];
+        if (subtitles.count > 0) {
+          [_playerItem selectMediaOption:[subtitles objectAtIndex:0] inMediaSelectionGroup:subtitleGroup];
+        }
+
       if(self.onVideoLoad) {
           self.onVideoLoad(@{@"duration": [NSNumber numberWithFloat:duration],
                              @"currentTime": [NSNumber numberWithFloat:CMTimeGetSeconds(_playerItem.currentTime)],