public com.google.protobuf.Duration getStartTimeOffset() {
      if (startTimeOffsetBuilder_ == null) {
        return startTimeOffset_ == null
            ? com.google.protobuf.Duration.getDefaultInstance()
            : startTimeOffset_;
      } else {
        return startTimeOffsetBuilder_.getMessage();
      }
    }
<pre>
Start time in seconds, relative to the output file timeline. Determines the
first sprite to pick. The default is `0s`.
</pre>

<code>.google.protobuf.Duration start_time_offset = 7;</code>

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