8000 Implement ISCDF Audio Recommandation · Issue #79 · Ymagis/ClairMeta · GitHub
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Implement ISCDF Audio Recommandation #79

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remia opened this issue Mar 4, 2019 · 3 comments
Open

Implement ISCDF Audio Recommandation #79

remia opened this issue Mar 4, 2019 · 3 comments
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@remia
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remia commented Mar 4, 2019

Support for ISDCF recommandation, eg. Wild Track Audio format for SMPTE DCP B2.1.

These should be warnings.

https://isdcf.com/papers/ISDCF-Doc4-Audio-channel-recommendations.pdf
https://isdcf.com/t/SMPTE-DCP-Tests/
@remia remia changed the title Support ISCDF Audio Recommandation Implement ISCDF Audio Recommandation Mar 15, 2019
@remia
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remia commented Apr 4, 2019 •
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These are a first list of the new checks that could be added :

  • Channel order is coherent with the recommandation, this is only possible if there is MCA descriptors to actually identify individuals channels roles
  • In any configuration, audio channel count shall be an even number
  • Interop compositions shall have no channel labeling (MCA descriptors)

For SMPTE compositions only :

  • Sound Track shall contain Audio Channel Label and Sound Field Group, ie. MCA Sub-Descriptors (see SMPTE 429-2 A.2, D-BOX Technical Note)
  • Sound Track WaveAudioEssence.ChannelAssignement shall be set to configuration 4, ie. Wild Track Format
  • CPL MetadataAsset MCA Descriptors should match the ones found in the Sound Track files
  • SMPTE B2.1 Conformance check, ie. CPL and MXF MCA Descriptors presents

@jamiegau
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jamiegau commented Nov 3, 2021

It should be noted here that SMPTE configuration 4 appears to be the only supported format by many now and it would be recommended to make any other configuration result in a WARNING.

@remia
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remia commented Nov 25, 2021

Adding Wild Track channel assignment check as part of #207

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