public com.google.protobuf.ByteString getModeBytes() {
          java.lang.Object ref = mode_;
          if (ref instanceof String) {
            com.google.protobuf.ByteString b =
                com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
            mode_ = b;
            return b;
          } else {
            return (com.google.protobuf.ByteString) ref;
          }
        }
<pre>
Specifies the deinterlacing mode to adopt.
The default is `send_frame`.
Supported values:

- `send_frame`: Output one frame for each frame
- `send_field`: Output one frame for each field
</pre>

<code>string mode = 1;</code>

@return The bytes for mode.
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/PreprocessingConfig.java