@java.lang.Override
    public java.lang.String getRateControlMode() {
      java.lang.Object ref = rateControlMode_;
      if (ref instanceof java.lang.String) {
        return (java.lang.String) ref;
      } else {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        rateControlMode_ = s;
        return s;
      }
    }
<pre>
Specify the `rate_control_mode`. The default is `vbr`.

Supported rate control modes:

- `vbr` - variable bitrate
</pre>

<code>string rate_control_mode = 6;</code>

@return The rateControlMode.
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/VideoStream.java