Bit of a hack to pass through original MediaFormat from FrameworkSampleSource.

library/src/main/java/com/google/android/exoplayer/FrameworkSampleSource.java

@@ -315,10 +315,12 @@ public final class FrameworkSampleSource implements SampleSource, SampleSourceRe
     }
     long durationUs = format.containsKey(android.media.MediaFormat.KEY_DURATION)
         ? format.getLong(android.media.MediaFormat.KEY_DURATION) : C.UNKNOWN_TIME_US;
-    return new MediaFormat(mimeType, maxInputSize, durationUs, width, height, rotationDegrees,
-        MediaFormat.NO_VALUE, channelCount, sampleRate, language,
+    MediaFormat mediaFormat = new MediaFormat(mimeType, maxInputSize, durationUs, width, height,
+        rotationDegrees, MediaFormat.NO_VALUE, channelCount, sampleRate, language,
         MediaFormat.OFFSET_SAMPLE_RELATIVE, initializationData, false, MediaFormat.NO_VALUE,
         MediaFormat.NO_VALUE);
+    mediaFormat.setFrameworkFormatV16(format);
+    return mediaFormat;
   }
 
   @TargetApi(16)

library/src/main/java/com/google/android/exoplayer/MediaFormat.java

@@ -262,6 +262,18 @@ public final class MediaFormat {
     return frameworkMediaFormat;
   }
 
+  /**
+   * Sets the framework format returned by {@link #getFrameworkMediaFormatV16()}.
+   *
+   * @deprecated This method only exists for FrameworkSampleSource, which is itself deprecated.
+   * @param format The framework format.
+   */
+  @Deprecated
+  @TargetApi(16)
+  /* package */ final void setFrameworkFormatV16(android.media.MediaFormat format) {
+    frameworkMediaFormat = format;
+  }
+
   @Override
   public String toString() {
     return "MediaFormat(" + mimeType + ", " + maxInputSize + ", " + width + ", " + height + ", "