diff --git a/libraries/test_utils_robolectric/src/main/java/androidx/media3/test/utils/robolectric/ShadowMediaCodecConfig.java b/libraries/test_utils_robolectric/src/main/java/androidx/media3/test/utils/robolectric/ShadowMediaCodecConfig.java
index 468cecefe8..5f83aaefec 100644
--- a/libraries/test_utils_robolectric/src/main/java/androidx/media3/test/utils/robolectric/ShadowMediaCodecConfig.java
+++ b/libraries/test_utils_robolectric/src/main/java/androidx/media3/test/utils/robolectric/ShadowMediaCodecConfig.java
@@ -250,7 +250,7 @@ public final class ShadowMediaCodecConfig extends ExternalResource {
               .build());
       // TODO: Update ShadowMediaCodec to consider the MediaFormat.KEY_MAX_INPUT_SIZE value passed
       // to configure() so we don't have to specify large buffers here.
-      int bufferSize = mimeType.equals(MimeTypes.VIDEO_H265) ? 250_000 : 100_000;
+      int bufferSize = mimeType.equals(MimeTypes.VIDEO_H265) ? 250_000 : 150_000;
       ShadowMediaCodec.addDecoder(
           codecName,
           new ShadowMediaCodec.CodecConfig(