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Clarify registration descriptor usage #40

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Clarify registration descriptor usage #40

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2 changes: 1 addition & 1 deletion index.html
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Expand Up @@ -74,7 +74,7 @@ <h1>Identifying AV1 streams in MPEG-2 TS</h1>

## AV1 registration descriptor

The presence of a Registration Descriptor, as defined in [[!MPEG-2 TS]], is mandatory with the *format_identifier* field set to 'AV01' (A-V-0-1). The Registration Descriptor shall be the first in the PMT loop and included before the AV1 video descriptor.
The presence of a Registration Descriptor, as defined in [[!MPEG-2 TS]], is mandatory with the *format_identifier* field set to 'AV01' (A-V-0-1). The Registration Descriptor shall be conveyed in the descriptor loop for the respective elementary stream entry in the program map table, and included before the AV1 video descriptor.
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I'm not sure about the "respective ES entry".
Should we say:
When an elementary stream entry in the PMT contains an AV1 video descriptor, it shall have a Registration Descriptor and that RD shall be before the AV1 video descriptor.


### Syntax

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