Sorry for garbled, reissued as follows. 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. For example: (abuff_src@Music)(abuff_src@Ring)---amix---abuff_sink In the graph above, We support three playback scenarios at the same time: 1. Only abuff_src@Music needs to be played, and abuff_src@Ring has no data. abuff_src@Ring is ignored during negotiation, "abuff_src@Music -- amix -- abuff_sink" link negotiation is successful, and playback can be performed; 2. Only abuff_src@Ring needs to be played, and abuff_src@Music has no data. abuff_src@Music is ignored during negotiation, "abuff_src@ring --> amix --> abuff_sink" link negotiation is successful, and playback can be performed; 3. Both abuff_src@Music and abuff_src@Ring need to be played, and all filters are negotiated successfully and mixed playback is performed. 杨亚磊 269032741@qq.com ------------------ 原始邮件 ------------------ 发件人: "FFmpeg development discussions and patches" <rsbultje@gmail.com>; 发送时间: 2025年3月26日(星期三) 凌晨2:05 收件人: "FFmpeg development discussions and patches"<ffmpeg-devel@ffmpeg.org>; 主题: Re: [FFmpeg-devel] [PATCH] avfilter: Proof of Concept: enable out-of-tree filters Hi, On Mon, Mar 24, 2025 at 12:20 PM Leandro Santiago <leandrosansilva@gmail.com> wrote: > I really hope this can be the last iteration, as I ran out of ideas on how > to simplify the process, so please let me know your thoughts :-) I'm not sure I understand the rationale or goal of this. It seems you're trying to create a process for extending the source/build tree with components not part of our git. Is this something people are interested in? I've never heard this use case before. Ronald _______________________________________________ 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". _______________________________________________ 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".