Forward FRAME-RATE from the master playlist to renditions

Issue: #8960

PiperOrigin-RevId: 379922704

RELEASENOTES.md

@@ -24,6 +24,8 @@
         `EXT-X-MAP` tag in a media playlist, would not be loaded when
         encountered during playback
         ([#9004](https://github.com/google/ExoPlayer/issues/9004)).
+    *   Forward the FRAME-RATE value from the master playlist to renditions.
+        ([#8960](https://github.com/google/ExoPlayer/issues/8960)).
 *   UI:
     *   Add `PendingIntent.FLAG_IMMUTABLE` flag when creating a broadcast intent
         in `PlayerNotificationManager`. This is required to avoid an error on

library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsSampleStreamWrapper.java

@@ -1502,7 +1502,8 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
             .setPeakBitrate(propagateBitrates ? playlistFormat.peakBitrate : Format.NO_VALUE)
             .setCodecs(codecs)
             .setWidth(playlistFormat.width)
-            .setHeight(playlistFormat.height);
+            .setHeight(playlistFormat.height)
+            .setFrameRate(playlistFormat.frameRate);
 
     if (sampleMimeType != null) {
       formatBuilder.setSampleMimeType(sampleMimeType);