Le duodi 12 thermidor, an CCXXI, sunswang a écrit : > I am currently trying to figure out how to resolve the "output pad .... no > source found" error from a modification of the ffmpeg audio filter example > because I am using a filter that requires 2 or more inputs.
Please do not trim error messages. > However, I am having trouble understanding exactly what "AVFilterPad", AVFilterPad is used to describe an input or output of a filter: its type, its name, pointers to functions used to handle incoming or outgoing frames and a few more technical details. It is part of the filter. > "AVFilterInOut" are in playing a roll towards filtering. AVFilterInOut is mostly a way of encoding the information "the 4th input of the concat filter": a pointer to the filter context, and the index of the designated input or output. Plus a next pointer to build a linked list, and possibly a name if the structure comes from parsing a graph description. For example, if you parse a graph that says "[0:a] [ex] amerge", you get two AVFilterInOut for the input: - one pointing to the context for amerge, index #0, name "0:a"; - one pointing to the context for amerge, index #1, name "ex"; and one AVFilterInOut for the output: - pointing to the context for amerge, index #0 (it has only one output), name NULL. Regards, -- Nicolas George
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