From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <ffmpeg-devel-bounces@ffmpeg.org> Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTPS id F232E4BA51 for <ffmpegdev@gitmailbox.com>; Thu, 27 Mar 2025 19:38:27 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 8C060687C59; Thu, 27 Mar 2025 21:38:23 +0200 (EET) Received: from nef.ens.fr (nef2.ens.fr [129.199.96.40]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 9E0D8687B51 for <ffmpeg-devel@ffmpeg.org>; Thu, 27 Mar 2025 21:38:16 +0200 (EET) 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 52RJcFrA006896 ; Thu, 27 Mar 2025 20:38:15 +0100 Received: by phare.normalesup.org (Postfix, from userid 1001) id 872F32EFA6; Thu, 27 Mar 2025 20:38:15 +0100 (CET) Date: Thu, 27 Mar 2025 20:38:15 +0100 From: Nicolas George <george@nsup.org> To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org> Message-ID: <Z-WpJ6RoW0Jn2j78@phare.normalesup.org> References: <tencent_3D16BF6736523D0CF509D6BE945709048E07@qq.com> <Z-KTXSZyqpV6mVMB@phare.normalesup.org> <tencent_0616AB448A99440CC7A9DF151B809EAAFA06@qq.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <tencent_0616AB448A99440CC7A9DF151B809EAAFA06@qq.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (nef.ens.fr [129.199.96.32]); Thu, 27 Mar 2025 20:38:15 +0100 (CET) Subject: Re: [FFmpeg-devel] [PATCH] FFMPEG: add graph reconfig capability X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches <ffmpeg-devel.ffmpeg.org> List-Unsubscribe: <https://ffmpeg.org/mailman/options/ffmpeg-devel>, <mailto:ffmpeg-devel-request@ffmpeg.org?subject=unsubscribe> List-Archive: <https://ffmpeg.org/pipermail/ffmpeg-devel> List-Post: <mailto:ffmpeg-devel@ffmpeg.org> List-Help: <mailto:ffmpeg-devel-request@ffmpeg.org?subject=help> List-Subscribe: <https://ffmpeg.org/mailman/listinfo/ffmpeg-devel>, <mailto:ffmpeg-devel-request@ffmpeg.org?subject=subscribe> Reply-To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org> Cc: yangyalei <269032741@qq.com> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" <ffmpeg-devel-bounces@ffmpeg.org> Archived-At: <https://master.gitmailbox.com/ffmpegdev/Z-WpJ6RoW0Jn2j78@phare.normalesup.org/> List-Archive: <https://master.gitmailbox.com/ffmpegdev/> List-Post: <mailto:ffmpegdev@gitmailbox.com> yangyalei via ffmpeg-devel (HE12025-03-26): > In the avfiltergraph of FFmpeg, it is required that all filters within > the graph can obtain a format and successfully negotiate for data > flow. > > So, is it allowed for the graph to contain filters that cannot obtain > a format? Can these filters be ignored during format negotiation, > allowing only the filters that can obtain a format to negotiate > successfully? > > This patch addresses the problem described in this scenario. Thanks for the explanations. Unfortunately, there is still something important missing: What does it change in practice? Which ffmpeg command-line is not currently possible and becomes possible with this patch? Also: Please remember that the negotiation process is very fragile and mostly uncovered by tests. Please test at least with the ones in there: https://ffmpeg.org/pipermail/ffmpeg-devel/2022-August/299593.html > ------------------ Original ------------------ Please remember that top-posting is forbidden on this list. If you do not know what it means, look it up. 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".