public com.google.protobuf.DurationOrBuilder getTimeOffsetOrBuilder() {
      if (timeOffsetBuilder_ != null) {
        return timeOffsetBuilder_.getMessageOrBuilder();
      } else {
        return timeOffset_ == null
            ? com.google.protobuf.Duration.getDefaultInstance()
            : timeOffset_;
      }
    }
<pre>
Time-offset, relative to the beginning of the video,
corresponding to the video frame for this location.
</pre>

<code>.google.protobuf.Duration time_offset = 2;</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1beta2/src/main/java/com/google/cloud/videointelligence/v1beta2/FaceFrame.java