documentation on how audio streams were encoded and packaged

[jpiesing]

In the December 6th meeting, we had a discussion about issue #3 which relates to properly documenting how a stream was encoded and packaged so it can be re-generated several years later if a problem is found. The conclusion was that we have most of this for video and what's left can be deferred. Fundamentally the AVC streams can be regenerated using open source tools and scripts that are in this repo.

Eurofins need to decide how this issue will be addressed for audio. What documentation will they provide for how to re-generate the audio they are/will be encoding and packaging. What scripts will be provided in this repo? They may be using commercial tools & not open source. They may be using pre-release or R&D versions of commercial tools. All that makes reproducing the encoding in the future complex but it is important.

[rbouqueau]

FYI the DTS/XPERI streams are generated using this repository, see https://github.com/cta-wave/Test-Content-Generation#audio-content-xperidts

[rcottingham]

@rbouqueau I can update the Readme with this info and submit to you for review or provide to you to update. Let me know the best approach please.

[rbouqueau]

Any approach works: modify the Readme or provide a PR.

[jpiesing]

@rcottingham Ideally, I would like to see sufficiently detailed documentation that a new suitably qualified engineer could reasonably attempt to regenerate the test material at some future time when Yan and yourself have moved on to other things and are not available. I fully appreciate your obligations to those paying for the work may be rather less than this. For AVC, Romain has provided the scripts used to generate the test content from the mezzanine.

[mbergman42]

I'm doing theory of operation, but not how to regenerate the test material. Richard, I'll send you a draft on the side.

[jpiesing]

A solution of this has been proposed at #67

[rcottingham]

Pull request merged. I believe this can now be closed.

[rbouqueau]

Agreed. We now need to make decisions in #66 .