public com.google.protobuf.TimestampOrBuilder getMarkinTimeOrBuilder() {
        if (markinTimeBuilder_ != null) {
          return markinTimeBuilder_.getMessageOrBuilder();
        } else {
          return markinTime_ == null
              ? com.google.protobuf.Timestamp.getDefaultInstance()
              : markinTime_;
        }
      }
<pre>
The mark-in Unix epoch time in the original live stream manifest.
</pre>

<code>.google.protobuf.Timestamp markin_time = 1;</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/Clip.java