Fixed API

Author: litetex

extractor/src/main/java/org/schabi/newpipe/extractor/streamdata/delivery/ProgressiveHTTPDeliveryData.java

@@ -1,5 +1,5 @@
 package org.schabi.newpipe.extractor.streamdata.delivery;
 
-public interface ProgressiveHTTPDeliveryData extends DeliveryData {
+public interface ProgressiveHTTPDeliveryData extends UrlBasedDeliveryData {
     // Nothing to implement additionally
 }

extractor/src/main/java/org/schabi/newpipe/extractor/streamdata/stream/VideoStream.java

@@ -5,12 +5,14 @@
 
 import java.util.Objects;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 /**
  * Represents a video (only) stream.
  */
 public interface VideoStream extends Stream<VideoAudioMediaFormat> {
+    @Nonnull
     VideoQualityData videoQualityData();
 
     @Override