fix: playlists wrongfully excluded on iOS when using ManagedMediaSource (#1555)

Author: alex-barstow

src/playlist-controller.js

@@ -198,6 +198,7 @@ export class PlaylistController extends videojs.EventTarget {
     this.playlistExclusionDuration = playlistExclusionDuration;
     this.maxPlaylistRetries = maxPlaylistRetries;
     this.enableLowInitialPlaylist = enableLowInitialPlaylist;
+    this.usingManagedMediaSource_ = false;
 
     if (this.useCueTags_) {
       this.cueTagsTrack_ = this.tech_.addTextTrack(
@@ -221,6 +222,7 @@ export class PlaylistController extends videojs.EventTarget {
       // Airplay source not yet implemented. Remote playback must be disabled.
       this.tech_.el_.disableRemotePlayback = true;
       this.mediaSource = new window.ManagedMediaSource();
+      this.usingManagedMediaSource_ = true;
 
       videojs.log('Using ManagedMediaSource');
     } else if (window.MediaSource) {
@@ -1997,7 +1999,7 @@ export class PlaylistController extends videojs.EventTarget {
     }
 
     // fmp4 relies on browser support, while ts relies on muxer support
-    const supportFunction = (isFmp4, codec) => (isFmp4 ? browserSupportsCodec(codec) : muxerSupportsCodec(codec));
+    const supportFunction = (isFmp4, codec) => (isFmp4 ? browserSupportsCodec(codec, this.usingManagedMediaSource_) : muxerSupportsCodec(codec));
     const unsupportedCodecs = {};
     let unsupportedAudio;
 
@@ -2139,11 +2141,11 @@ export class PlaylistController extends videojs.EventTarget {
       const codecs = codecsForPlaylist(this.main, variant);
       const unsupported = [];
 
-      if (codecs.audio && !muxerSupportsCodec(codecs.audio) && !browserSupportsCodec(codecs.audio)) {
+      if (codecs.audio && !muxerSupportsCodec(codecs.audio) && !browserSupportsCodec(codecs.audio, this.usingManagedMediaSource_)) {
         unsupported.push(`audio codec ${codecs.audio}`);
       }
 
-      if (codecs.video && !muxerSupportsCodec(codecs.video) && !browserSupportsCodec(codecs.video)) {
+      if (codecs.video && !muxerSupportsCodec(codecs.video) && !browserSupportsCodec(codecs.video, this.usingManagedMediaSource_)) {
         unsupported.push(`video codec ${codecs.video}`);
       }