Can't import OPUS audio into Audacity and Windows shows media length is 0s

[stodge]

I copied the code to encode to an OPUS audio file from the following link. The audio file will play back in Windows, and I think it sounds correct. However, Audacity won't import it (incorrect filetype, even though the file extension is ".opus") and the properties for the audio (via the file explorer) show the media length is 0s.

I'm using the following version as it's the only one available:

        <!-- https://mvnrepository.com/artifact/org.gagravarr/vorbis-java-core -->
        <dependency>
            <groupId>org.gagravarr</groupId>
            <artifactId>vorbis-java-core</artifactId>
            <version>0.8</version>
        </dependency>

https://github.com/lostromb/concentus/blob/master/Java/ConcentusTestConsole/src/main/java/org/concentus/console/Program.java#L47

Any suggestions would be appreciated.

Thanks

[stodge]

Sorry, I just realised the problem is probably in the Concentus sample code, not your code that is writing the OPUS file.