public com.google.cloud.video.transcoder.v1.PreprocessingConfigOrBuilder
        getPreprocessingConfigOrBuilder() {
      if (preprocessingConfigBuilder_ != null) {
        return preprocessingConfigBuilder_.getMessageOrBuilder();
      } else {
        return preprocessingConfig_ == null
            ? com.google.cloud.video.transcoder.v1.PreprocessingConfig.getDefaultInstance()
            : preprocessingConfig_;
      }
    }
<pre>
Preprocessing configurations.
</pre>

<code>.google.cloud.video.transcoder.v1.PreprocessingConfig preprocessing_config = 3;</code>
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/Input.java