public Builder setOutputChannel(int value) {

        outputChannel_ = value;
        bitField0_ |= 0x00000008;
        onChanged();
        return this;
      }
<pre>
Required. The zero-based index of the channel in the output audio stream.
Must be consistent with the
[input_channel][google.cloud.video.livestream.v1.AudioStream.AudioMapping.input_channel].
</pre>

<code>int32 output_channel = 4 [(.google.api.field_behavior) = REQUIRED];</code>

@param value The outputChannel to set.
@return This builder for chaining.
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/AudioStream.java