Re: [EXTERNAL] [PNG] Meeting minutes - Oct 31st, 2022

The document and section I mentioned give real examples while ST 2086 provides the actual standard.

Yes, ST 2086 is sufficient but difficult for some to translate.  ITU-T Series H Supplement 19 gives simple examples in a table form that may be useful.

Best,
Chris

From: Chris Blume (ProgramMax) <programmax@gmail.com>
Date: Sunday, November 6, 2022 at 8:05 PM
To: Seeger, Chris (NBCUniversal) <Chris.Seeger@nbcuni.com>
Cc: Pierre-Anthony Lemieux <pal@sandflow.com>, public-png@w3.org <public-png@w3.org>
Subject: Re: [EXTERNAL] [PNG] Meeting minutes - Oct 31st, 2022
I have created a GitHub issue for this<https://urldefense.com/v3/__https:/github.com/w3c/PNG-spec/issues/236__;!!PIZeeW5wscynRQ!prq7tRIZaW4UYO_i3H-V3rihe6miHKFH9O6vzUrDjw6tK5i7BDds51yJFHIsc9TZKB1SSq5rmZa6jdMbVQCl$> [1].

Chris Seeger, you mentioned ITU-T Series H Supplement 19; Section 7.3 and MaxCLL and MaxFALL. Is ST 2086 insufficient? Is more information used?

[1] https://github.com/w3c/PNG-spec/issues/236<https://urldefense.com/v3/__https:/github.com/w3c/PNG-spec/issues/236__;!!PIZeeW5wscynRQ!prq7tRIZaW4UYO_i3H-V3rihe6miHKFH9O6vzUrDjw6tK5i7BDds51yJFHIsc9TZKB1SSq5rmZa6jdMbVQCl$>

On Mon, Oct 31, 2022 at 7:13 PM Seeger, Chris (NBCUniversal) <Chris.Seeger@nbcuni.com<mailto:Chris.Seeger@nbcuni.com>> wrote:
Can you take a look at ITU-T Series H Supplement 19; Section 7.3.  It might be useful for this effort as well.

https://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-H.Sup19-202104-I!!PDF-E&type=items<https://urldefense.com/v3/__https:/www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-H.Sup19-202104-I!!PDF-E&type=items__;!!PIZeeW5wscynRQ!prq7tRIZaW4UYO_i3H-V3rihe6miHKFH9O6vzUrDjw6tK5i7BDds51yJFHIsc9TZKB1SSq5rmZa6jQfnXEwK$>

Tables 9, 10, 11 also have very good examples.

Best,

-Chris


From: Pierre-Anthony Lemieux <pal@sandflow.com<mailto:pal@sandflow.com>>
Date: Monday, October 31, 2022 at 5:44 PM
To: Seeger, Chris (NBCUniversal) <Chris.Seeger@nbcuni.com<mailto:Chris.Seeger@nbcuni.com>>
Cc: Chris Blume (ProgramMax) <programmax@gmail.com<mailto:programmax@gmail.com>>, public-png@w3.org<mailto:public-png@w3.org> <public-png@w3.org<mailto:public-png@w3.org>>
Subject: Re: [EXTERNAL] [PNG] Meeting minutes - Oct 31st, 2022
Yes. I suggest we use Annex B of [1] as a template:

https://urldefense.com/v3/__https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9097487__;!!PIZeeW5wscynRQ!rB8RRNCwGh5XNRLlWXXEe2wUJl_ECqH6WGWKwjuVBOv2XbRUxjY6F_NKqLIZsaQ6P5sxOvshjxXwkA$<https://urldefense.com/v3/__https:/ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9097487__;!!PIZeeW5wscynRQ!rB8RRNCwGh5XNRLlWXXEe2wUJl_ECqH6WGWKwjuVBOv2XbRUxjY6F_NKqLIZsaQ6P5sxOvshjxXwkA$>

On Mon, Oct 31, 2022 at 2:24 PM Seeger, Chris (NBCUniversal)
<Chris.Seeger@nbcuni.com<mailto:Chris.Seeger@nbcuni.com>> wrote:
>
> I’m assuming the “HDR Metadata” would be ST 2086 static metadata?  This would be “Mastering Display Colour Volume” and not MaxCLL and MaxFALL.
>
> Is that a correct assumption?
>
> Get Outlook for iOS
> ________________________________
> From: Chris Blume (ProgramMax) <programmax@gmail.com<mailto:programmax@gmail.com>>
> Sent: Monday, October 31, 2022 1:18:15 PM
> To: public-png@w3.org<mailto:public-png@w3.org> <public-png@w3.org<mailto:public-png@w3.org>>
> Subject: [EXTERNAL] [PNG] Meeting minutes - Oct 31st, 2022
>
> Attached is a PDF of the meeting minutes from Oct 31st, 2022.
>
> Executive summary:
>
> Next steps in the recommendation pipeline.
> We almost certainly want to include HDR mastering metadata for tone mapping purposes. This should likely be an additional chunk included in the 3rd Edition. As such, it will need discussion.
>
> The next meeting will be Nov 14th, 2022 from 11am-noon Eastern US time.
> The topic will be HDR mastering metadata.