public Builder clearLeftPixels() {
        bitField0_ = (bitField0_ & ~0x00000004);
        leftPixels_ = 0;
        onChanged();
        return this;
      }
<pre>
The number of pixels to add to the left. The default is 0.
</pre>

<code>int32 left_pixels = 3;</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