public Builder clearCodec() {
      codec_ = getDefaultInstance().getCodec();
      bitField0_ = (bitField0_ & ~0x00000001);
      onChanged();
      return this;
    }
<pre>
The codec for this text stream. The default is `webvtt`.

Supported text codecs:

- `srt`
- `ttml`
- `cea608`
- `cea708`
- `webvtt`
</pre>

<code>string codec = 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/TextStream.java