speakerId are always "-1" in the insights.json of audio standard analyzer job output

[jzhouw]

This issue concerns: (mark with an x)

- [ ] AMSE v4.x (for AMS v2)
- [ x] AMSE v5.x (for AMS v3)

This issue is for a: (mark with an x)

- [ ] bug report
- [ ] UI issue report
- [x] feature request
- [ ] performance problem
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

tried a analysis job of "AudioAnalyzer-AudioStandard-zh-CN" job and found in insights.json speakerid = "-1" in all the transcripts of different speakers. How to get the speakerId value correct?

references to speaker indexing: https://docs.microsoft.com/en-us/azure/media-services/latest/analyze-video-audio-files-concept

is the ExperimentalOptions required to get speaker indexign work? If so, how to use this option? Thanks https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.management.media.models.audioanalyzerpreset.experimentaloptions?view=azure-dotnet#microsoft-azure-management-media-models-audioanalyzerpreset-experimentaloptions

OS and Version?

Windows 10.

Versions

5.4.7