public Builder clearMode() {
          mode_ = getDefaultInstance().getMode();
          bitField0_ = (bitField0_ & ~0x00000001);
          onChanged();
          return this;
        }
<pre>
Specifies the deinterlacing mode to adopt.
The default is `send_frame`.
Supported values:

- `send_frame`: Output one frame for each frame
- `send_field`: Output one frame for each field
</pre>

<code>string mode = 1;</code>

@return This builder for chaining.
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/PreprocessingConfig.java