- From: Dale Curtis <dalecurtis@google.com>
- Date: Wed, 28 Jun 2023 09:33:47 -0700
- To: Pierre-Anthony Lemieux <pal@sandflow.com>, Christopher Cameron <ccameron@google.com>
- Cc: public-media-wg@w3.org
- Message-ID: <CAPUDrwejyKY3kRWRm-W=nz9ub_esACcUkwgVF3FCJprT4vouEg@mail.gmail.com>
On the Chrome side we've been in contact with +Christopher Cameron <ccameron@google.com> on this. The proposal looks reasonable so far. In terms of things salient to the Media WG, we should: - Ensure VideoColorSpace properly converts when drawn into a HDR canvas. Specifically that the outputs of video, VideoDecoder, and ImageDecoder map correctly into destination spaces. - Ensure high bit depth pixel formats work properly: https://github.com/w3c/webcodecs/issues/384#issuecomment-1169230721 - dale On Tue, Jun 27, 2023 at 9:33 PM Pierre-Anthony Lemieux <pal@sandflow.com> wrote: > (The message was intended for the MEIG... but we also wanted to get > the Media WG's feedback, so below is the equivalent message for this > group. Apologies for the confusion, I blame autocorrect.) > > Dear Media WG: > > The Color on the Web CG [1] would very much appreciate your feedback > on the following strawman, which motivates and proposes baseline > modifications to the HTML Canvas API to enable support for > High-Dynamic Range (HDR) imagery: > > > https://github.com/w3c/ColorWeb-CG/blob/8eac62f15e5b41940636beb031f6214b61e933af/hdr_html_canvas_element.md > > The proposed modifications allow the HTML Canvas API to manipulate > High Dynamic Range (HDR) images expressed using the widespread BT.2100 > PQ and BT.2100 HLG color spaces, without precluding adding future HDR > capabilities, such as support for additional color spaces like a > linear high-dynamic range color space. > > Feedback can be provided at [2]. > > Best, > > -- Color on the Web CG chairs > > [1] https://www.w3.org/community/colorweb/ > [2] https://github.com/w3c/ColorWeb-CG/issues > > > > On Tue, Jun 27, 2023 at 9:17 PM Pierre-Anthony Lemieux <pal@sandflow.com> > wrote: > > > > Good morning/evening, > > > > Following-up on my presentation on April 25, the Color on the Web CG > > [1] would very much appreciate any feedback the MEIG might have on the > > following strawman, which motivates and proposes baseline > > modifications to the HTML Canvas API to enable support for > > High-Dynamic Range (HDR) imagery: > > > > > https://github.com/w3c/ColorWeb-CG/blob/8eac62f15e5b41940636beb031f6214b61e933af/hdr_html_canvas_element.md > > > > The proposed modifications allow the HTML Canvas API to manipulate > > High Dynamic Range (HDR) images expressed using the widespread BT.2100 > > PQ and BT.2100 HLG color spaces, without precluding adding future HDR > > capabilities, such as support for additional color spaces like a > > linear high-dynamic range RGB color space. > > > > Best, > > > > -- Pierre [CG co-chair] > > > > [1] https://www.w3.org/community/colorweb/ > >
Received on Wednesday, 28 June 2023 16:34:06 UTC