Tim:

> Thank you for the review and the comments. Please find the following answers 
> to your comments below. I have modified the draft and uploaded a -13 version.
> 
> 
>> Major Concerns:
>> Section 7.2.1:  Does the SHALL related to [SMPTE-ST2110-10] only apply when 
>> TP=2110TPNL or TP=2110TPW?  Please reword to be clear when this SHALL 
>> statement applies.
> 
> The short answer is yes, the SHALL only applies when using the RTP 
> specification in combination with SMPTE ST 2110. But, we chose to remove the 
> SHALL sentence about ST 2110. Originally it was trying to say that in the 
> case of using this RTP Payload under a SMPTE ST 2110 system, that the SDP 
> description must then also follow the rules of STMPTE ST 2110-10. But, it is 
> evident that when implementing another standard, the one must follow that 
> standard. It is a concern of a ST 2110 implementer. For this specification it 
> changes nothing specifically (ST 2110-10 mandates some specific SDP fields 
> and values, but this is allowed by the memo). We specifically made these 
> changes to allow the RTP payload to be used also outside of a ST 2110 
> ecosystem.

That resolves my concern; thanks.

>> Minor Concerns:
>> Section 3.3:  I do not have [ISO21122-2], and obviously an implementer will 
>> need that document.  Can a bit more be said about "the profile" and "the 
>> level and sublevel used" without making this document too big?  I am able to 
>> get a feel for the other things listed here from their names.
> 
> We reworked this section to clarify better the concepts of the profile and 
> level/sublevel fields, without duplicating content from ISO21122-2.

This helps; thanks.

>> Section 3.4:  Can you please provide some explanation of the "frat field"?
> 
> We reformulated the text a bit and added an explicit reference for the frat 
> field to ISO21122-3 where it is defined.

Thanks for adding that context.

>> Nits:
>> Section 3.2:  I do not understand the the last sentence?  Is it the same as: 
>> It represents sample values of a single image, without any interpretation 
>> relative to a colour space.
> 
> Yes, that is correct. We changed the sentence to use your suggested wording.

That is more clear to me; thanks.

>> Section 5: s/of ST 2110-21 do not /of [SMPTE-ST2110-21] do not /
> 
> We have updated the reference.

Thanks.

Russ

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