fix: Reject TS content on Edge

lib/polyfill/mediasource.js

@@ -61,6 +61,10 @@ shaka.polyfill.MediaSource = class {
         // Bug filed: https://bugs.webkit.org/show_bug.cgi?id=165342
         shaka.polyfill.MediaSource.stubAbort_();
       }
+    } else if (shaka.util.Platform.isEdge()) {
+      // TS content is broken on Edge in general.
+      // See https://github.com/shaka-project/shaka-player/issues/4955
+      shaka.polyfill.MediaSource.rejectTsContent_();
     } else if (shaka.util.Platform.isTizen2() ||
         shaka.util.Platform.isTizen3() ||
         shaka.util.Platform.isTizen4()) {
@@ -122,6 +126,29 @@ shaka.polyfill.MediaSource = class {
     };
   }
 
+  /**
+   * Patch isTypeSupported() to reject TS content.  Used to avoid TS-related MSE
+   * bugs on Edge.
+   *
+   * @private
+   */
+  static rejectTsContent_() {
+    const originalIsTypeSupported = MediaSource.isTypeSupported;
+
+    MediaSource.isTypeSupported = (mimeType) => {
+      // Parse the basic MIME type from its parameters.
+      const pieces = mimeType.split(/ *; */);
+      const basicMimeType = pieces[0];
+      const container = basicMimeType.split('/')[1];
+
+      if (container.toLowerCase() == 'mp2t') {
+        return false;
+      }
+
+      return originalIsTypeSupported(mimeType);
+    };
+  }
+
   /**
    * Patch |MediaSource.isTypeSupported| to always reject |codec|. This is used
    * when we know that we are on a platform that does not work well with a given