From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.ffmpeg.org (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTPS id 76BA84C4A0 for ; Sun, 3 Aug 2025 15:49:36 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTP id 4C0A668C6C8; Sun, 3 Aug 2025 18:49:27 +0300 (EEST) Received: from nef.ens.fr (nef2.ens.fr [129.199.96.40]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTPS id 78545687CBD; Sun, 3 Aug 2025 18:49:15 +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 573FnEGF000575 ; Sun, 3 Aug 2025 17:49:14 +0200 Received: by phare.normalesup.org (Postfix, from userid 1001) id 813192EFE3; Sun, 3 Aug 2025 17:49:14 +0200 (CEST) Date: Sun, 3 Aug 2025 17:49:14 +0200 From: Nicolas George To: FFmpeg development discussions and patches Message-ID: References: <20250803125028.GD4581@haasn.xyz> <20250803124237.GB4581@haasn.xyz> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (nef.ens.fr [129.199.96.32]); Sun, 03 Aug 2025 17:49:14 +0200 (CEST) Subject: Re: [FFmpeg-devel] The patch series about premultiplied alpha 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 Cc: tc@ffmpeg.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Nicolas George (HE12025-08-03): > By the way, I am willing to put aside my reluctance of contributing with > all the bullshit going on in order to help implementing this flag > system. But I suspect it is so simple to implement that it is not worth > it. In fact, I have started doing it. I use the following test case: -vf 'premultiply=inplace=1,drawbox=x=50:y=50:w=800:h=600:c=#808080:t=50,unpremultiply=inplace=1' (on top of a png produced by testsrc2). Compare the grayness of the box with the case where premultiply is not applied. I will send the series here in a few hours. Regards, -- Nicolas George _______________________________________________ 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".