From ce1174e282a253ce9a8757fd964bf4249b620786 Mon Sep 17 00:00:00 2001 From: Yannis Guyon Date: Wed, 26 Jun 2024 14:21:40 +0000 Subject: [PATCH] Begin new Working Group Draft version --- index.bs | 35 ++++++++++------------------------- latest-approved.html | 1 + latest-draft.html | 1 + 3 files changed, 12 insertions(+), 25 deletions(-) create mode 120000 latest-approved.html create mode 120000 latest-draft.html diff --git a/index.bs b/index.bs index 496e165..fa75ffd 100755 --- a/index.bs +++ b/index.bs @@ -1,19 +1,21 @@ 
 Group: AOM
-Status: FD
-Text Macro: SPECVERSION v1.1.0
+Status: WGD
+Text Macro: SPECVERSION v1.2.0
 Title: AV1 Image File Format (AVIF)
-URL: https://AOMediaCodec.github.io/av1-avif/v1.1.0.html
-!Latest version: https://AOMediaCodec.github.io/av1-avif
-!Previously approved version: v1.0.0
+URL: https://AOMediaCodec.github.io/av1-avif
 Shortname: av1-avif
-Editor: Cyril Concolato, Netflix, cconcolato@netflix.com
+Editor: Yannis Guyon, Google, yguyon@google.com
+Former Editor: Cyril Concolato, Netflix, cconcolato@netflix.com
 Former Editor: Paul Kerr, Netflix, pkerr@netflix.com
 Former Editor: Anders Klemets, Microsoft, Anders.Klemets@microsoft.com
 Abstract: This document specifies syntax and semantics for the storage of [[!AV1]] images in the generic image file format [[!HEIF]], which is based on [[!ISOBMFF]]. While [[!HEIF]] defines general requirements, this document also specifies additional constraints to ensure higher interoperability between writers and readers when [[!HEIF]] is used with [[!AV1]] images. These constraints are based on constraints defined in the Multi-Image Application Format [[!MIAF]] and are grouped into profiles inspired by the profiles defined in [[!MIAF]].
-Date: 2022-04-15
+Date: 2024-06-25
 Repository: AOMediaCodec/av1-avif
 Text Macro: ADDITIONALLOGO https://aomedia.org/assets/images/avif-logo-rgb.svg
+!Previously approved version: https://aomediacodec.github.io/av1-avif/v1.1.0.html
+!Latest approved version: https://aomediacodec.github.io/av1-avif/latest-approved.html
+!Latest draft version: https://aomediacodec.github.io/av1-avif/latest-draft.html
 Metadata Order: This version, !*, *
@@ -434,21 +436,4 @@ A file containing a 'pict' track compliant with this profile is expected to list

The media type "image/avif" is officially registered with IANA and available at: https://www.iana.org/assignments/media-types/image/avif.

-

Changes since v1.0.0 release

-- Constrain image sequence to one sample description entry and constant sequence header. -- Clarify ispe semantics. -- Update use of essential field for av1C. -- Clarify that constraints on still picture flags apply to non-layered images. -- Clarify in-profile and out-of-profile restrictions. -- Replace Media Type section with link to IANA official registration. -- Define properties for layered images to allow selective or progressive decoding of layers. -- Add restriction on transformative properties in derivation chains. -- Extend semantics of avio brand to image items and clarify brand usage. -- Clarify image sequence constraints in profile definitions. -- add support for the ContentColourVolumeBox property. -- Remove wrong recommendations regarding still picture flags in image sequences. -- constrain auxiliary images to be full range, and ignore colr for alpha planes. -- Rephrase statement about auxiliary images and profiles. (Editorial change) -- Remove the definition of the image/avif-sequence MIME type. -- Adding bitdepth constraint for alpha and master images. - +

Changes since v1.1.0 release

diff --git a/latest-approved.html b/latest-approved.html new file mode 120000 index 0000000..8bcda4a --- /dev/null +++ b/latest-approved.html @@ -0,0 +1 @@ +v1.1.0.html \ No newline at end of file diff --git a/latest-draft.html b/latest-draft.html new file mode 120000 index 0000000..64233a9 --- /dev/null +++ b/latest-draft.html @@ -0,0 +1 @@ +index.html \ No newline at end of file