private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.video.transcoder.v1.VideoStream.Vp9CodecSettings,
            com.google.cloud.video.transcoder.v1.VideoStream.Vp9CodecSettings.Builder,
            com.google.cloud.video.transcoder.v1.VideoStream.Vp9CodecSettingsOrBuilder>
        getVp9FieldBuilder() {
      if (vp9Builder_ == null) {
        if (!(codecSettingsCase_ == 3)) {
          codecSettings_ =
              com.google.cloud.video.transcoder.v1.VideoStream.Vp9CodecSettings
                  .getDefaultInstance();
        }
        vp9Builder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.video.transcoder.v1.VideoStream.Vp9CodecSettings,
                com.google.cloud.video.transcoder.v1.VideoStream.Vp9CodecSettings.Builder,
                com.google.cloud.video.transcoder.v1.VideoStream.Vp9CodecSettingsOrBuilder>(
                (com.google.cloud.video.transcoder.v1.VideoStream.Vp9CodecSettings) codecSettings_,
                getParentForChildren(),
                isClean());
        codecSettings_ = null;
      }
      codecSettingsCase_ = 3;
      onChanged();
      return vp9Builder_;
    }
<pre>
VP9 codec settings.
</pre>

<code>.google.cloud.video.transcoder.v1.VideoStream.Vp9CodecSettings vp9 = 3;</code>
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/VideoStream.java