public static com.google.cloud.videointelligence.v1p1beta1.SpeechTranscriptionConfig parseFrom(
      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }
<pre>
Optional. For file formats, such as MXF or MKV, supporting multiple audio
tracks, specify up to two tracks. Default: track 0.
</pre>

<code>repeated int32 audio_tracks = 6 [(.google.api.field_behavior) = OPTIONAL];</code>

@param index The index of the element to return.
@return The audioTracks at the given index.
java-video-intelligence/proto-google-cloud-video-intelligence-v1p1beta1/src/main/java/com/google/cloud/videointelligence/v1p1beta1/SpeechTranscriptionConfig.java