public Builder addAllAudioTracks(java.lang.Iterable<? extends java.lang.Integer> values) {
      ensureAudioTracksIsMutable();
      com.google.protobuf.AbstractMessageLite.Builder.addAll(values, audioTracks_);
      bitField0_ |= 0x00000020;
      onChanged();
      return this;
    }
<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 values The audioTracks to add.
@return This builder for chaining.
java-video-intelligence/proto-google-cloud-video-intelligence-v1p1beta1/src/main/java/com/google/cloud/videointelligence/v1p1beta1/SpeechTranscriptionConfig.java