public com.google.protobuf.ByteString getElementaryStreamsBytes(int index) {
    return elementaryStreams_.getByteString(index);
  }
<pre>
List of `ElementaryStream`
[key][google.cloud.video.livestream.v1.ElementaryStream.key]s multiplexed
in this stream.

- For `fmp4` container, must contain either one video or one audio stream.
- For `ts` container, must contain exactly one audio stream and up to one
video stream.
</pre>

<code>repeated string elementary_streams = 4;</code>

@param index The index of the value to return.
@return The bytes of the elementaryStreams at the given index.
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/MuxStream.java