public H264Settings withGopBReference(H264GopBReference gopBReference) {
        this.gopBReference = gopBReference.toString();
        return this;
    }
Specify whether to allow B-frames to be referenced by other frame types. To use reference B-frames when your GOP
structure has 1 or more B-frames: Leave blank or keep the default value Enabled. We recommend that you choose
Enabled to help improve the video quality of your output relative to its bitrate. To not use reference B-frames:
Choose Disabled.

@param gopBReference
       Specify whether to allow B-frames to be referenced by other frame types. To use reference B-frames when
       your GOP structure has 1 or more B-frames: Leave blank or keep the default value Enabled. We recommend
       that you choose Enabled to help improve the video quality of your output relative to its bitrate. To not
       use reference B-frames: Choose Disabled.
@return Returns a reference to this object so that method calls can be chained together.
@see H264GopBReference
aws-java-sdk-mediaconvert/src/main/java/com/amazonaws/services/mediaconvert/model/H264Settings.java