@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(codec_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, codec_);
    }
    if (channelCount_ != 0) {
      output.writeInt32(2, channelCount_);
    }
    for (int i = 0; i < channelLayout_.size(); i++) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 3, channelLayout_.getRaw(i));
    }
    getUnknownFields().writeTo(output);
  }
<pre>
A list of channel names specifying the layout of the audio channels.
</pre>

<code>repeated string channel_layout = 3;</code>

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