public java.lang.String getContainer() {
      java.lang.Object ref = container_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        container_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
<pre>
The container format. The default is `mp4`

Supported container formats:

- `ts`
- `fmp4`- the corresponding file extension is `.m4s`
- `mp4`
- `vtt`

See also:
[Supported input and output
formats](https://cloud.google.com/transcoder/docs/concepts/supported-input-and-output-formats)
</pre>

<code>string container = 3;</code>

@return The container.
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/MuxStream.java