public com.google.protobuf.Duration.Builder getStartTimeOffsetBuilder() {
      bitField0_ |= 0x00000008;
      onChanged();
      return getStartTimeOffsetFieldBuilder().getBuilder();
    }
<pre>
Start time in seconds for the atom, relative to the input file timeline.
The default is `0s`.
</pre>

<code>.google.protobuf.Duration start_time_offset = 4;</code>
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/EditAtom.java