private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.video.transcoder.v1.VideoStream,
            com.google.cloud.video.transcoder.v1.VideoStream.Builder,
            com.google.cloud.video.transcoder.v1.VideoStreamOrBuilder>
        getVideoStreamFieldBuilder() {
      if (videoStreamBuilder_ == null) {
        if (!(elementaryStreamCase_ == 1)) {
          elementaryStream_ = com.google.cloud.video.transcoder.v1.VideoStream.getDefaultInstance();
        }
        videoStreamBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.video.transcoder.v1.VideoStream,
                com.google.cloud.video.transcoder.v1.VideoStream.Builder,
                com.google.cloud.video.transcoder.v1.VideoStreamOrBuilder>(
                (com.google.cloud.video.transcoder.v1.VideoStream) elementaryStream_,
                getParentForChildren(),
                isClean());
        elementaryStream_ = null;
      }
      elementaryStreamCase_ = 1;
      onChanged();
      return videoStreamBuilder_;
    }
<pre>
Encoding of a video stream.
</pre>

<code>.google.cloud.video.transcoder.v1.VideoStream video_stream = 1;</code>
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/ElementaryStream.java