From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 0110E43C50 for ; Wed, 27 Jul 2022 16:48:58 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id CD45C68B8C3; Wed, 27 Jul 2022 19:48:55 +0300 (EEST) Received: from nef.ens.fr (nef2.ens.fr [129.199.96.40]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id A6E0768B8A6 for ; Wed, 27 Jul 2022 19:48:49 +0300 (EEST) X-ENS-nef-client: 129.199.129.80 ( name = phare.normalesup.org ) Received: from phare.normalesup.org (phare.normalesup.org [129.199.129.80]) by nef.ens.fr (8.14.4/1.01.28121999) with ESMTP id 26RGmmaN026493 for ; Wed, 27 Jul 2022 18:48:49 +0200 Received: by phare.normalesup.org (Postfix, from userid 1001) id BC9A9EB5B9; Wed, 27 Jul 2022 18:48:48 +0200 (CEST) Date: Wed, 27 Jul 2022 18:48:48 +0200 From: Nicolas George To: FFmpeg development discussions and patches Message-ID: References: <20220727152447.30944-1-george@nsup.org> MIME-Version: 1.0 In-Reply-To: X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (nef.ens.fr [129.199.96.32]); Wed, 27 Jul 2022 18:48:49 +0200 (CEST) Subject: Re: [FFmpeg-devel] [PATCH] lavu/pixfmt: summarize yuv naming conventions X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Content-Type: multipart/mixed; boundary="===============3195285891036344797==" Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: --===============3195285891036344797== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="fE5y/xxPeSh348O+" Content-Disposition: inline --fE5y/xxPeSh348O+ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hendrik Leppkes (12022-07-27): > Following the actual naming convention, you would arrive at a 4x2 > grid, however even the Wikipedia article linked above is inconsistent > with that. In the first section describing how the naming convention > works, it lists an exception that 4:1:0 is supposedly referencing a > 4x4 grid, however further down where 4:1:0 is being detailed, this is > no longer the case. > Many other resources just seem to copy this second Wikipedia description. >=20 > We have a variety of decoders that use this format as it is defined > right now, presumably successfully. Of course that could just mean > this format exists, and is just named wrong, on the other hand, did > any decoder ever require the one pixel per 4x4 grid format, giving any > technical baking to the other interpretation? Thanks for the clarification. Let us leave it as it is. Regards, --=20 Nicolas George --fE5y/xxPeSh348O+ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE6ooRQGBoNzw0KnwPcZVLI8pNxgwFAmLhbG4ACgkQcZVLI8pN xgyW3w//UtJf4OdZB6vueQKJQsuDCrBVPllLcRzPrhkU/6CSBWZ0pWa/lCL7PpTV lTXzTM2IHYUd9Hv3Vp6B4woY6IUGtvaNGMQPTRbjBMYGm2NeApXAke7n6ycNk5nk qzOD03ad+CPKtyDwe7rbcYcNxr0dE6kopDoLWiU1VTQ8yAlJfimpDfIErd+c0iyc 0yqxccYESy3clREAxiPmGTqJoJ30zGQDXehKa9ICDsAi2KtzijRxt35f5dwnWYdu dunXh1s98DwF4piBJ5qvso/E2vFk1SGCiH5CbbRAWPhg8FgVhURdqirc5sUwPpMB tunn5YFyYqx5/Wj7rlgPV6WptXrmi3JWQu+N5KJUXwZeQGVnvV9x1YTytdKSI1vA P52QbQshNTsifarHzlaqgGPu75MyKRcFqUmnrA0qyNHiA30Z7uhBPhtETj+x/qni lPQMZn0X+ABmjfrxRcloXtmrzXhYLF96sIFraeg8/YmZpXWiTblXmbFJic33+JSw ex+lgwvPjEpwTgCmqeBTb/8xOR+Ds5Au9/yf9niZUkRGxYDIVyL85UnVOGzsrATJ vwm+ObSKtKPinFI23BbUUrPLrTYaH0FfCDIUaWIR7OUXMQpMyUL3FrxM+ZD1zH8g V3mObAkS39y6V1mHSvUj1wd50VjJ31P7Imhu7wxgCaWx8rhR/9w= =ZMC6 -----END PGP SIGNATURE----- --fE5y/xxPeSh348O+-- --===============3195285891036344797== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe". --===============3195285891036344797==--